2010 BMW 535i Oxygen Sensor - Upstream Denso

First Time Fit

Before Catalyst : Cylinders 4-6 : Regulating Lambda Probe : 1100mm

DENSO Corporation
DENSO Corporation, headquartered in Kariya, Aichi Japan, is the number one global automotive supplier of advanced technology, systems and components in the areas of thermal, powertrain control, electric, electronics and information and safety.
DENSO Oil Filter

DENSO First Time Fit oil filters feature a heavy-duty steel case to resist distortion, dual-layer filtration media for maximum engine protection, a molded, pre-lubricated o-ring to prevent leakage, and a silicone anti-drain back valve to protect the engine against damaging wear on cold start-up.

• Heavy-duty steel case resists distortion.
• Pre-lubricated molded o-ring provides superior sealing over generic filters.
• Unique torque stopper design prevents leaks from under torquing .
Dual-layer filtration media for greater oil filtration.
• Silicone anti-drain back valve prevents rough starts.
• Traps contaminants for increased engine protection.

As an added bonus, DENSO filters also employ an innovative Torque Stopper case design that prevents over-tightening and simplifies installation, a great feature for do-it-yourselfers.

Warranty Information: 12 month - 12,000 mile limited warranty against defects in material and workmanship.

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DENSO Air Filter

DENSO First Time Fit® air filters employ three successive layers of filtration media to trap a much wider range of particulate sizes than plain, single-layer media.

Precision-molded seals eliminate bypass and ensure a factory-quality fit in the air cleaner housing, making installation a breeze.

• Easy installation with a factory quality fit
• OE-quality engineering and materials.
• High airflow rate improves performance and fuel economy
• Three-layer design deliverers a high filtration efficiency
• Superior dust-holding capacity will increase filter life.
• Prevents abrasive particulate matter from entering the engine reduced engine wear.

Warranty Information: 12 month - 12,000 mile limited warranty against defects in material and workmanship.

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Denso Air Mass Meter

Denso manufactures an Air Mass Meter that is engineered to exact OEM specifications for quality, fit and performance. The Denso Air Mass Meter provides exceptional reliability by incorporating a platinum coated sensing element with a glass film to protect the sensor from contaminants.

Denso prevents errors caused by air pulsations produced in the intake air pipe by integrating the control circuit within the top of the air flow meter so that only the small bypass passage structure with the sensing element is inserted into the intake air pipe, resulting in higher detection accuracy and performance.

• OEM Quality Direct fit Application
• Platinum coated sensing element
• Meets or exceeds OEM specifications.
• Utilizes the factory style mounts, connectors and fittings.
• Provides exceptional reliability.

Warranty Information: 12 month - 12,000 mile limited warranty against defects in material and workmanship.

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Denso Air Mass Sensor

Denso manufactures an air mass sensor that is engineered to exact OEM specifications for quality, fit and performance. The Denso Air Mass Sensor provides exceptional reliability by incorporating a platinum coated sensing element with a glass film to protect the sensor from contaminants.

Denso prevents errors caused by air pulsations produced in the intake air pipe by integrating the control circuit within the top of the air flow sensor so that only the small bypass passage structure with the sensing element is inserted into the intake air pipe, resulting in higher detection accuracy and performance.

• OEM Quality Direct fit Application
• Platinum coated sensing element
• Meets or exceeds OEM specifications.
• Utilizes the factory style mounts, connectors and fittings.
• Provides exceptional reliability.

Warranty Information: 12 month - 12,000 mile limited warranty against defects in material and workmanship.

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Denso Oxygen Sensor

Denso First Time Fit® oxygen sensors are constructed of the highest quality materials available. High-quality stainless steel, porous polytetrafluoroethylene (PTFE), fluorine rubber, aluminum oxide, high-grade platinum and ceramics are used in each DENSO sensor.

FEATURES:

• SUPERIOR DESIGN — Maximizes engine performance and fuel efficiency while reducing harmful emissions.
• DOUBLE-PROTECTION COVER — Maintains proper unit temperature for quicker response times and protects the ceramic element against silicone and lead poisoning.
• ALUMINUM-OXIDE TRAP LAYER — Keeps silicone and lead outside the ceramic element through DENSO’s exclusive design, preventing damage to the platinum electrode.
• STAINLESS STEEL HOUSING — Resists corrosion and contamination with a rugged, watertight body.
• POROUS PTFE FILTER — Allows atmospheric oxygen to enter the sensor without permitting water or engine contaminants to seep into the casing.

Denso First Time Fit® oxygen sensors are coated with a special formulation of aluminum oxide to trap impurities outside of the ceramic element. In head-to-head testing against the leading competitors, DENSO oxygen sensors were rated two times more resistant to silicone and lead poisoning.

Installation Notes: Vehicles equipped with Air Fuel Ratio Sensors may look very similar to the Oxygen Sensor. Please confirm the correct part before ordering and if the connector does not match, do not install.

Warranty Information: 12 month - 12,000 mile limited warranty against defects in material and workmanship.

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Denso Universal Oxygen Sensor

Denso Universal First Time Fit® oxygen sensors are constructed of the highest quality materials available. High-quality stainless steel, porous polytetrafluoroethylene (PTFE), fluorine rubber, aluminum oxide, high-grade platinum and ceramics are used in each DENSO sensor.

FEATURES:

• SUPERIOR DESIGN — Maximizes engine performance and fuel efficiency while reducing harmful emissions.
• DOUBLE-PROTECTION COVER — Maintains proper unit temperature for quicker response times and protects the ceramic element against silicone and lead poisoning.
• ALUMINUM-OXIDE TRAP LAYER — Keeps silicone and lead outside the ceramic element through DENSO’s exclusive design, preventing damage to the platinum electrode.
• STAINLESS STEEL HOUSING — Resists corrosion and contamination with a rugged, watertight body.
• POROUS PTFE FILTER — Allows atmospheric oxygen to enter the sensor without permitting water or engine contaminants to seep into the casing.

Denso First Time Fit® oxygen sensors are coated with a special formulation of aluminum oxide to trap impurities outside of the ceramic element. In head-to-head testing against the leading competitors, DENSO oxygen sensors were rated two times more resistant to silicone and lead poisoning.

Critical Installation Notes: Please read the installation directions included in the box before removal of the original oxygen sensor form the vehicle. - Vehicles equipped with Air Fuel Ratio Sensors may look very similar to the Oxygen Sensor. Please confirm the correct part before ordering.

Warranty Information: Universal Oxygen Sensors require assembly of electircal connectors and cannot be returned once wire end connectors have been crimped... 12 month - 12,000 mile limited warranty against defects in material and workmanship.

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DENSO Double Platinum Spark Plug

The DENSO Double-Platinum plug features platinum on both the center and ground electrodes. The precious metal fights corrosion and erosion, ensuring superior spark performance and maximum spark plug life.

DENSO Double Platinum spark plugs incorporate the precious metal on both the center and ground electrodes, not just on the center electrode as with conventional platinum plugs. The result is a significant improvement in spark plug life.
Features

• Platinum center electrode
• Platinum ground electrode
• Premium shell construction with machine-rolled threads

Benefits

• Sustained spark performance over 60,000 miles
• Reduced secondary required voltage, increased ignition efficiency

DENSO engineering studies show that Double Platinum plugs can run longer with reduced erosion, minimizing spark gap growth throughout the life of the plug.

Warranty Information: 12 month - 12,000 mile limited warranty against defects in material and workmanship

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DENSO Iridium Long Life Spark Plug

The DENSO Iridium Long Life spark plug was specifically designed for long service life and consistent performance in the latest, most advanced production cars

DENSO's patented iridium alloy is more durable than even platinum, allowing the center electrode to be shrunk to only 0.7 mm in diameter. This produces a dramatic improvement in ignitability and spark plug life.

Closely related to platinum and exhibiting even tougher qualities, the rare metal iridium is an ideal material for spark plugs. A fine-wire, 0.7mm iridium center electrode is 360-degree laser welded in place using an exclusive DENSO process, and then matched to a platinum ground electrode. This pair of precision-formed, premium-metal electrodes dramatically extends the plug's useful life.

Features

• Fine-wire iridium center electrode
• Platinum ground electrode
• 360 degree laser-welded spark tip

Benefits

• Sustained spark performance over 100,000 miles
• Withstands higher pressures and temperatures
• Reduced spark plug wear and erosion

The DENSO Iridium Long Life plug has been selected as original equipment on many of the world's top cars, including those from GM, Toyota, Honda, and Mitsubishi. There's a simple reason for that: these manufacturers needed the best.

Warranty Information: 12 month - 12,000 mile limited warranty against defects in material and workmanship

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DENSO Iridium Power® Spark Plug

DENSO Iridium Power® spark plugs represent a performance breakthrough. The laser-welded center electrode is only 0.4mm in diameter – the slimmest iridium electrode in the industry. The taper-cut side electrode complements the design, delivering reliable spark energy under the most grueling pressures and temperatures.

DENSO engineers used the power of this miraculous metal to produce an iridium center electrode that is only 0.4mm in diameter. With its superior thermal qualities, this whisker-fine electrode is capable of taking the most extreme heat and punishment.

This breakthrough was matched to one of DENSO's most famous innovations, the patented U-Groove ground electrode. The combination of these two features resulted in the Iridium Power® plug, one of the most advanced and innovative spark plugs on the market.
Features

• Tapered cut, U-Groove ground electrode
• 0.4mm iridium center electrode
• 360-degree laser welding assembly process

Benefits

• Required ignition voltage reduced
• Unsurpassed center electrode durability
• Available for many performance and power sports applications, including Corvette, Viper, and Harley-Davidson

The Iridium Power® plug delivers greater spark energy while demanding significantly less secondary required voltage from the ignition system.

Warranty Information: 12 month - 12,000 mile limited warranty against defects in material and workmanship

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DENSO Iridium Racing Spark Plug

Based on the same iridium technology and 0.4mm center electrode as the Iridium Power® series, Iridium Racing® plugs are further upgraded with a 100 percent platinum ground electrode insert, 20 percent tougher insulator material, and premium construction.

DENSO Iridium Racing® plugs are components of championship caliber. Using the same basic 0.4mm center electrode configuration as DENSO's Iridium Power® Plug.

DENSO's motorsports plug is further enhanced with a 0.8mm ground electrode of 100 percent platinum, special insulator material with 20 percent greater strength than conventional plugs, and other valuable features for hard-core race applications.

Features

• 0.4mm iridium center electrode, the slimmest in the industry
• Patented self-cleaning insulator/electrode design
• Durable, reusable packaging protects spark plugs when not in use

Benefits

• Handles extreme compression and boost levels
• Ultimate performance and durability
• Maximizes track time, minimizes downtime

Surface-gap, recessed, and ultra-compact 8mm plugs are available for a wide range of specialized racing engines.

Warranty Information: 12 month - 12,000 mile limited warranty against defects in material and workmanship

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DENSO Platinum TT« Spark Plug

The platinum Twin-Tip plug raises the bar, with DENSO's special platinum alloy on the center electrode and a titanium-enhanced alloy on the ground electrode. The standing ground electrode reduces spark quenching, producing more effective ignition, while the durable alloys extend spark plug life.

In DENSO's Platinum TT spark plug, the TT stands for Twin-Tip. It's one step beyond traditional platinum plugs, with premium materials on both electrodes instead of only one. The 1.1mm platinum center electrode is augmented by a titanium-enhanced ground electrode, delivering maximum ignition energy under the fiercest conditions an engine's combustion chamber can dish out.

Features

• 1.1mm platinum center electrode
• Titanium-enhanced alloy ground electrode
• Minimum-quench electrode design

Benefits

• Improved fuel economy
• Faster starts
• Enhanced flame propagation for increased engine efficiency

Along with the materials, the design is unique as well: The ground electrode's free-standing firing pad reduces quenching to generate a more powerful spark. The Platinum TT is designed to offer superior consumer value, along with faster starts and improved economy. DENSO's objectives: Top Performance, Total Value.

Warranty Information: 12 month - 12,000 mile limited warranty against defects in material and workmanship

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DENSO U-Groove Spark Plug

DENSO U-Groove spark plug provides a patented U-shaped ground electrode. This electrode was developed to meet the demand for improved ignitability, which is necessary for an increase of efficiency in emission gas purification and fuel consumption. The U-Groove gives the flame a groove to grow in, thereby creating a larger flame front for a more complete combustion even in the case of lean air-fuel mixture. A conventional, flat ground electrode design of regular plugs crushes the flame preventing full spark potential.

The distinctive five-rib insulator in purified alumina prevents leakage and flashover, while dual internal copper-glass seals and a copper-core center electrode with nickel-alloy tip assure reliable spark delivery.

Features

• 100 percent pre-fired to ensure reliable operation
• Patented U-Grove ground electrode
• Bonded; center electrode and insulator for a gas-tight seal
• Copper core center electrode for superior thermal conductivity
• Unique five-rib insulator reduces flashover

Benefits

• Patented U-groove ground electrode design fires leaner mixtures than conventional plugs
• Precision machine-rolled threads reduce seizing and cross-threading in delicate aluminum heads
• Wide range of part numbers for thousands of applications, including classic and collector cars

Warranty Information: 12 month - 12,000 mile limited warranty against defects in material and workmanship

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Denso Ignition Wire Set

The Denso First Time Fit ignition wire sets that is identical in form, fit, color and performance to the factory-installed wire sets. Every part of each wire sets construction meets or exceeds OE/OES specifications.

• OE-Equivalent.
• OEM style connectors for easy Installation.
• Carbon fiberglass core for superior conductivity.
• Fiberglass braiding for strength.
• Conductive silicone layer for EMI/RFI noise suppression.
• Silicone insulation for superior dielectric and heat performance.
• Reinforced Kevlar core.

The Denso 7 and 8mm ignition wires are SAE J2031 Class E rated, the highest quality wire used in the industry. These wires can withstand temperatures from -40º to 428º F and pass tests covering everything from electrical properties to shrinkage to chemical resistance and accelerated life testing.

Warranty Information: 12 Month - 12,000 mile limited warranty against defects in material and workmanship.

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WSO Alternators:
WORLD SOURCEONE 100% New Alternators are manufactured to withstand the high output electrical demands of today’s vehicles and are designed to perform under the most severe operating environments.
Purchasing a 100% new WSO alternator guarantees that none of the internal components have ever been exposed to severe operating conditions.
In the event your alternator fails, WSO provides a full 2 year roadside assistance program. (Download PDF).

OE Quality: Superior, reliable performance compared to competitive products, Includes major heat related wear items: rectifier, regulator, rotor, stator and bearings, Factory OE Connectors
Exact fit: No additional time consuming steps needed for installation
100% New Alternator: No remanufactured components, Designed to provide durability and performance, Maximum output performance, Longest performance life
100% Fully Load Tested: Meets or exceeds original equipment manufacturers amperage and voltage output standards, Individual performance and test report provided in box
Protection Plan: 2-year roadside assistance program
Latest Certification: TS 16949

WSO Alternators:
WORLD SOURCEONE 100% New Alternators are manufactured to withstand the high output electrical demands of today’s vehicles and are designed to perform under the most severe operating environments.
Purchasing a 100% new WSO alternator guarantees that none of the internal components have ever been exposed to severe operating conditions.
In the event your alternator fails, WSO provides a full 2 year roadside assistance program. (Download PDF).

OE Quality: Superior, reliable performance compared to competitive products, Includes major heat related wear items: rectifier, regulator, rotor, stator and bearings, Factory OE Connectors
Exact fit: No additional time consuming steps needed for installation
100% New Alternator: No remanufactured components, Designed to provide durability and performance, Maximum output performance, Longest performance life
100% Fully Load Tested: Meets or exceeds original equipment manufacturers amperage and voltage output standards, Individual performance and test report provided in box
Protection Plan: 2-year roadside assistance program
Latest Certification: TS 16949

DENSO New Starter

The Denso 100% New Starter is manufactured to the strictest OE standards and subjected to rigorous safety and performance tests.

Each Denso First Time Fit® starter goes through over 29 performance and safety checks and uses only the highest quality replacement components and OE-standard lubricants.

• OE-equivalent and direct fit application.
• 100% new starter with no remanufactured components.
• Armature — cleaned and high-voltage tested.
• Commutator — polished, gauged and performance tested.
• Clutch assembly — inspected, torque-tested and re-lubricated.
• 100% load tested.
• Designed to provide durability and performance.

Warranty Information: 12 month - 12,000 mile limited warranty against defects in material and workmanship.

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DENSO Remanufactured Starter

DENSO remanufactured starters are subjected to rigorous testing; Armatures and field coils are high-voltage tested; commutators are refinished and performance-validated; terminals and fasteners are replaced with high-quality copper components. And every starter is exactingly bench-tested to ensure factory-original performance.

Features

• High-voltage tested armature and field coils to ensure reliable performance
• Premium copper terminals to ensure a clean source of electrical current
• All-new bearings, brushes, and seals

Benefits

• Maximum cranking torque under all conditions
• Class leaders in size and weight
• Environmentally designed to start in cold and hot weather conditions

Warranty Information: 12 month - 12,000 mile limited warranty against defects in material and workmanship.

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METRIX® Radiators:
METRIX® OE Style Aluminum Core Radiators are guaranteed to match the exact specifications as the factory installed radiator, providing an OE quality part that will fit the same as the original manufacturer's product with no need to drill holes, move fittings, or stretch hoses.
All METRIX® radiators, tanks, cores, dimensions and materials meet the vehicle manufacturer's strict OE standards and are required to pass rigorous performance and durability tests.

OE Quality: Higher quality and reliable performance compared to competitive products
Exact fit: No additional time consuming steps needed for installation, Late model coverage
OE Engineered: Aluminum Core - Lightweight and improved engine cooling performance, Plastic Tanks - Optimized seal for improved durability against vibration and distortion
Aluminum Core: Advanced design for optimum heat transfer, High pressure resistance
Oil Cooler: Integrated OE design for efficient thermal management

Advantages:

• METRIX® products are engineered and manufactured to do the job right the first time with a complete line for automotive and light truck applications.
• METRIX® provides the OEM fit and quality that maintains the integrity of your vehicle, as well as your reputation as a professional service center.
• METRIX® is your quality alternative for thermal products.
• METRIX® products are all brand new and carry a 24 month / 24,000 mile warranty.

Denso A/C Condenser

Denso manufactures an A/C Condenser that is the same quality fit and performance of the OE Condenser it replaces

• OEM Quality Direct fit Application
• Utilizes a superior fin wave design that provides a higher heat transfer.
• Pure aluminum construction provides greater resistance for corrosion.
• An advanced fin design to decrease foreign particle deposits, keeping the entire A/C system running at optimal performance.

Warranty Information: 12 month - 12,000 mile limited warranty against defects in material and workmanship.

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METRIX® Receiver Driers:
METRIX® receiver driers are manufactured to OE specifications and provide durable, efficient performance. The OE engineered internal components provide enhanced separation of liquid and vapor, along with a desiccant filter that effectively controls moisture and helps protect the entire A/C system against corrosion.
The METRIX® receiver drier features a lightweight aluminum or high strength steel assembly and provides an exact fit, just as an OE-quality part should.

OE Quality: Higher quality and reliable performance compared to competitive products
Exact fit: No additional time consuming steps needed for installation
OE Engineered: Provides enhanced separation of liquid and vapor.
OE Construction: Aluminum - Lightweight and Resists Corrosion, Steel - High Strenght
Desiccant Filter Controls moisture and helps protect the entire A/C system against corrosion

Advantages:

• METRIX® products are engineered and manufactured to do the job right the first time with a complete line for automotive and light truck applications.
• METRIX® provides the OEM fit and quality that maintains the integrity of your vehicle, as well as your reputation as a professional service center.
• METRIX® is your quality alternative for thermal products.
• METRIX® products are all brand new and carry a 24 month / 24,000 mile warranty.

METRIX® Expansion Valves:
METRIX® expansion valves are manufactured to OE specifications and provide durability and optimum performance. The Thermostatic valves are engineered using the latest OEM designs and are made with the highest quality aluminum or brass.
METRIX® expansion blocks are machined from a single block of high grade aluminum or brass and are manufactured application specific according to OE size, shape and color.

Tonnage and superheat are rated to exact OEM specifications.

• Tonnage capacity rating is 1 to 2.5 tons
• The superheat rating is -2.0 to 10

OE Quality: Higher quality and reliable performance compared to competitive products
Exact fit: No additional time consuming steps needed for installation
OE Engineered: Meet or exceed OEM design
Expansion Block: Made of Aluminum or Brass, OE application specific for size and color
Thermostatic Valves: Made of Aluminum or Brass design per OE specifications, Internal or externally equalized based upon OEM design, Tonnage and superheat are rated to OEM specifications

Advantages:

• METRIX® products are engineered and manufactured to do the job right the first time with a complete line for automotive and light truck applications.
• METRIX® provides the OEM fit and quality that maintains the integrity of your vehicle, as well as your reputation as a professional service center.
• METRIX® is your quality alternative for thermal products.
• METRIX® products are all brand new and carry a 24 month / 24,000 mile warranty.

DENSO Activated Charcoal Cabin Filter

DENSO First Time Fit® activated charcoal cabin filters are engineered for optimal airflow and filtration, meeting all OE requirements. Up to five layers of filter media are used to trap impurities down to just .001 micron in size.

• OE Equivalent and a Direct Fit Application.
• Activated charcoal layer absorbs toxic and foul-smelling gases.
• The Denso First Time Fit® Activated charcoal cabin filter consists of a nonwoven-based particle filter media, and an activated charcoal layer.
• Designed to trap contaminants before they enter the vehicle cabin.
• Premium-quality filter media stops particulates down to .001 microns.
• Fleece material used contains up to five individual layers for super-fine filtration.
• Traps soot, dirt, and pollen to provide greater passenger comfort
• Maximum airflow, minimum air noise.

Activated Charcoal Cabin Air Filters: Cabin air filters with activated carbon elements remove harmful exhaust fumes, dirt and dust as well as high ozone concentrations and unpleasant smells. Their pleat bellows consist of three layers: an activated carbon layer is sandwiched between two layers of non-woven materials. The filter layers are heat-fused, which means that glues or solvents are not used at all. Depending on the vehicle type, activated carbon filters are also available that can be used instead of conventional cabin air filters.

Warranty Information: 12 month - 12,000 mile limited warranty against defects in material and workmanship.

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DENSO Particulate Cabin Filter

DENSO First Time Fit® particulate cabin filters are engineered for optimal airflow and filtration, meeting all OE requirements. Up to five layers of filter media are used to trap impurities down to just .001 micron in size.

• OE Equivalent and a Direct Fit Application.
• Designed to trap contaminants before they enter the vehicle cabin.
• Premium-quality filter media stops particulates down to .001 microns.
• Fleece material used contains up to five individual layers for super-fine filtration.
• Traps soot, dirt, and pollen to provide greater passenger comfort
• Maximum airflow, minimum air noise.

Warranty Information: 12 month - 12,000 mile limited warranty against defects in material and workmanship.

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DENSO Activated Charcoal Cabin Filter Kit
1 Kit = 2 Cabin Filters

DENSO First Time Fit® activated charcoal cabin filters are engineered for optimal airflow and filtration, meeting all OE requirements. Up to five layers of filter media are used to trap impurities down to just .001 micron in size.

• OE Equivalent and a Direct Fit Application.
• Activated charcoal layer absorbs toxic and foul-smelling gases.
• The Denso First Time Fit® Activated charcoal cabin filter consists of a nonwoven-based particle filter media, and an activated charcoal layer.
• Designed to trap contaminants before they enter the vehicle cabin.
• Premium-quality filter media stops particulates down to .001 microns.
• Fleece material used contains up to five individual layers for super-fine filtration.
• Traps soot, dirt, and pollen to provide greater passenger comfort
• Maximum airflow, minimum air noise.

Activated Charcoal Cabin Air Filters: Cabin air filters with activated carbon elements remove harmful exhaust fumes, dirt and dust as well as high ozone concentrations and unpleasant smells. Their pleat bellows consist of three layers: an activated carbon layer is sandwiched between two layers of non-woven materials. The filter layers are heat-fused, which means that glues or solvents are not used at all. Depending on the vehicle type, activated carbon filters are also available that can be used instead of conventional cabin air filters.

Warranty Information: 12 month - 12,000 mile limited warranty against defects in material and workmanship.

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DENSO Cabin Filter Kit
1 Kit = 2 Cabin Filters

DENSO First Time Fit® particulate cabin filters are engineered for optimal airflow and filtration, meeting all OE requirements. Up to five layers of filter media are used to trap impurities down to just .001 micron in size.

• OE Equivalent and a Direct Fit Application.
• Designed to trap contaminants before they enter the vehicle cabin.
• Premium-quality filter media stops particulates down to .001 microns.
• Fleece material used contains up to five individual layers for super-fine filtration.
• Traps soot, dirt, and pollen to provide greater passenger comfort
• Maximum airflow, minimum air noise.

Warranty Information: 12 month - 12,000 mile limited warranty against defects in material and workmanship.

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