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8 Cyl 5.0L 8 Cyl 5.7L

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1999 GMC C1500 Spark Plug 8 Cyl 5.0L NGK

NGK G-Power Platinum Spark Plug
Gap 0.060"
G-Power Spark Plug
Product Attributes:
- Center Electrode Design: Fine Wire
- Center Electrode Insulator Tip Projection:
  - 0.16
  - 4.0
- Washer Included: No
- Electrical Terminal Type: Non-removable Nut
- Grade Type: Standard Replacement
- Service Number: Tr55gp
- Ground Electrode Tip Material: Nickel
- Short Style Spark Plug: No
- Skirt: No
- Center Electrode Core Material: Copper
- Part Number: Tr55gp
- Resistor Type: Yes
- Stock Number: 3403
- Ground Electrode Tip Design: Trapezoid
- Pre-Gap Size:
  - .060
  - 1.5
- Ground Electrode Core Material: Nickel
- Material Grade: Platinum
- Center Electrode Projection: Mid Projection
- Seat Type: Tapered
- Ground Electrode Quantity: 1
- Insulator Material: Ceramic
- Hex Size: 5/8" (16mm)
- Reach:
  - 0.689
  - 17.5
- Center Electrode Tip Material: Platinum
- Skirt Length: 0.0
- Manufacturer Heat Range: 5
- Ground Configuration: J-gap
- Resistance: 5000.0
- Insulator Height:
  - 2.07
  - 52.5
- Thread Diameter:
  - 0.551
  - 14.0
Features:
- RECOMMENDED USAGE: Lower cost alternative to double precious metal spark plugs or as an upgrade to OE nickel alloy spark plugs
- SINGLE PLATINUM TIP: Fine wire 0.6 millimeter platinum tip center electrode ensures improved durability and a consistently stable spark
- TRAPEZOIDAL CUT GROUND ELECTRODE: Reduces quenching design produces improved ignitability and performance
- PLATINUM ALLOY: G-Power platinum provides exceptional value with increased performance and longer service intervals than factory nickel plugs
- COLD-ROLLED THREADS: Prevents cross-threading and damage to cylinder heads
- SOLID COPPER CORE: 98% pure copper core offers superior heat dissipation, conductivity and ultra wide heat ranges
NGK G-Power Platinum spark plugs are the best single platinum spark plugs at an economical price. G-Power plugs feature a fine wire platinum center electrode and a trapezoidal cut ground electrode that offers increased durability, improved fuel efficiency, lower emissions, faster starts and quicker acceleration over conventional nickel spark plugs. An excellent upgrade for vehicles which used nickel alloy spark plugs originally. For better performance consider upgrading to a NGK Iridium IX plug. For even greater performance consider upgrading to a NGK RUTHENIUM HX plug.
Suggested Purchase Quantity: 8
- Most jobs typically require 8 of this item.
This item must be purchased in quantities of 4

This Part Fits the Following OEM/Substitute Numbers:

12, 14, 3013, 3015, 3015-2, 3401, 3401-2, 3403, 3408, 3408-2, 3983, 3983-2, 41-902, 4511, 6701, 6703, 6706, 6709...VIEW MORE

Additional Fitment Information:

Vehicle	Block	CC	Engine	CID
1999 - GMC C1500	V	-	8 Cyl 5.0L	305

59 In Stock

Limited-Time Offer

$13.32 USD

$15.98 USD


Brand	NGK
Part #	N123403
Condition	New
Warehouse	B

1999 GMC C1500 Spark Plug 8 Cyl 5.0L NGK

NGK Iridium IX Spark Plug
Gap 0.060"
Iridium IX Spark Plug
Product Attributes:
- Center Electrode Design: Fine Wire
- Center Electrode Insulator Tip Projection:
  - 0.16
  - 4.0
- Washer Included: No
- Electrical Terminal Type: Non-removable Nut
- Grade Type: Performance
- Service Number: Tr55ix
- Ground Electrode Tip Material: Nickel
- Short Style Spark Plug: No
- Skirt: No
- Center Electrode Core Material: Copper
- Part Number: Tr55ix
- Resistor Type: Yes
- Stock Number: 7164
- Ground Electrode Tip Design: Taper Cut
- Pre-Gap Size:
  - .060
  - 1.5
- Ground Electrode Core Material: Nickel
- Material Grade: Iridium
- Center Electrode Projection: Mid Projection
- Seat Type: Tapered
- Ground Electrode Quantity: 1
- Insulator Material: Ceramic
- Hex Size: 5/8" (16mm)
- Reach:
  - 0.689
  - 17.5
- Center Electrode Tip Material: Iridium
- Skirt Length: 0.0
- Manufacturer Heat Range: 5
- Ground Configuration: J-gap
- Resistance: 5000.0
- Insulator Height:
  - 2.07
  - 52.5
- Thread Diameter:
  - 0.551
  - 14.0
Features:
- TAPERED CUT GROUND ELECTRODE: Reduced quenching design produces outstanding ignitability, improved acceleration, fuel efficiency and durability
- SOLID COPPER CORE: 98% pure copper core offers superior heat dissipation, conductivity and ultra wide heat ranges
- SINGLE IRIDIUM TIP: Fine wire 0.6 millimeter iridium tip center electrode ensures high durability and a consistently stable spark
- RECOMMENDED USAGE: Modified or high performance applications, or as an upgrade to OE nickel alloy spark plugs
- TRIVALENT METAL PLATING: Delivers superior anti-corrosion and anti-seizing properties, ensuring ease of installation and removal
- IRIDIUM ALLOY CENTER ELECTRODE: Iridium's density (6x that of platinum) and extremely high melting point is perfect for modern high efficiency engines
NGK Iridium IX spark plugs are specifically designed for the performance enthusiast. Iridium IX provides outstanding acceleration, high fuel efficiency and durability. NGK Iridium IX plugs offer extreme ignitability and exceptional anti-fouling. Tapered cut ground electrode provides improved starting, idling and throttle response. The Iridium fine wire center electrode's durability is six times harder than platinum. Iridium alloy's extremely high melting point is perfect for today's engines. For even greater performance consider upgrading to an NGK Ruthenium HX plug.
Suggested Purchase Quantity: 8
- Most jobs typically require 8 of this item.
This item must be purchased in quantities of 4

This Part Fits the Following OEM/Substitute Numbers:

12, 12561466, 12563707, 12565753, 14, 15, 16, 1765288, 1835342T, 1835406T, 1835414T, 1835430T, 1835464T, 1835788T, 1835826T, 241-902, 241-908, 241-913...VIEW MORE

Additional Fitment Information:

Vehicle	Block	CC	Engine	CID
1999 - GMC C1500	V	-	8 Cyl 5.0L	305

62 In Stock

Limited-Time Offer

$16.90 USD

$20.28 USD


Brand	NGK
Part #	N127164
Condition	New
Warehouse	B

1999 GMC C1500 Spark Plug 8 Cyl 5.0L NGK

NGK Laser Iridium Spark Plug
Gap 0.060" 100,000 mi OE Mfr Recommended Service Interval
Laser Iridium Spark Plug
Product Attributes:
- Center Electrode Design: Fine Wire
- Center Electrode Insulator Tip Projection:
  - 0.14
  - 3.5
- Washer Included: No
- Electrical Terminal Type: Non-removable Nut
- Grade Type: Performance
- Service Number: Itr4a15
- Ground Electrode Tip Material: Platinum
- Short Style Spark Plug: No
- Skirt: No
- Center Electrode Core Material: Copper
- Part Number: Itr4a15
- Resistor Type: Yes
- Stock Number: 5599
- Ground Electrode Tip Design: Standard
- Pre-Gap Size:
  - .060
  - 1.5
- Ground Electrode Core Material: Nickel
- Material Grade: Iridium Platinum
- Center Electrode Projection: Mid Projection
- Seat Type: Tapered
- Ground Electrode Quantity: 1
- Insulator Material: Ceramic
- Hex Size: 5/8" (16mm)
- Reach:
  - 0.689
  - 17.5
- Center Electrode Tip Material: Iridium
- Skirt Length: 0.0
- Manufacturer Heat Range: 4
- Ground Configuration: J-gap
- Resistance: 5000.0
- Insulator Height:
  - 2.07
  - 52.5
- Thread Diameter:
  - 0.551
  - 14.0
Features:
- TRIVALENT METAL PLATING: Delivers superior anti-corrosion and anti-seizing properties, ensuring ease of installation and removal
- RECOMMENDED USAGE: Best for vehicles with OE fine wire iridium alloy plugs
- PLATINUM TIP GROUND ELECTRODE: Unless OE specified, platinum protection at the ground electrode provides excellent ignitability and service life
- SOLID COPPER CORE: 98% pure copper core offers superior heat dissipation, conductivity and ultra wide heat ranges
- ACTUAL OE or EQUIVALENT DESIGN: OEM quality construction fine wire iridium alloy center electrode provides consistent performance
- IRIDIUM ALLOY CENTER ELECTRODE: Iridium's density (6x that of platinum) and extremely high melting point is perfect for modern high efficiency engines
NGK Laser Iridium spark plugs offer the best combination of performance and longevity. Engineered specifically for OE applications, Laser Iridium spark plugs are tested to the highest standards to ensure quality and durability. Iridium tipped center electrode provides durability six times harder than platinum. NGKs high grade pure alumina ceramic and 98 percent pure copper core prevents the spark plug from overheating while providing reliable starts. Most Laser Iridium spark plugs feature a platinum pad on the ground electrode for even wear in distributorless ignition systems.
Suggested Purchase Quantity: 8
- Most jobs typically require 8 of this item.
This item must be purchased in quantities of 4

Additional Fitment Information:

Vehicle	Block	CC	Engine	CID
1999 - GMC C1500	V	-	8 Cyl 5.0L	305

32 In Stock

Limited-Time Offer

$19.38 USD

$23.26 USD


Brand	NGK
Part #	N125599
Condition	New
Warehouse	B

1999 GMC C1500 Spark Plug 8 Cyl 5.7L NGK

NGK Laser Iridium Spark Plug
Gap 0.060" OE Equivalent Design* 100,000 mi OE Mfr Recommended Service Interval
Laser Iridium Spark Plug
Product Attributes:
- Center Electrode Design: Fine Wire
- Center Electrode Insulator Tip Projection:
  - 0.14
  - 3.5
- Washer Included: No
- Electrical Terminal Type: Non-removable Nut
- Grade Type: Performance
- Service Number: Itr4a15
- Ground Electrode Tip Material: Platinum
- Short Style Spark Plug: No
- Skirt: No
- Center Electrode Core Material: Copper
- Part Number: Itr4a15
- Resistor Type: Yes
- Stock Number: 5599
- Ground Electrode Tip Design: Standard
- Pre-Gap Size:
  - .060
  - 1.5
- Ground Electrode Core Material: Nickel
- Material Grade: Iridium Platinum
- Center Electrode Projection: Mid Projection
- Seat Type: Tapered
- Ground Electrode Quantity: 1
- Insulator Material: Ceramic
- Hex Size: 5/8" (16mm)
- Reach:
  - 0.689
  - 17.5
- Center Electrode Tip Material: Iridium
- Skirt Length: 0.0
- Manufacturer Heat Range: 4
- Ground Configuration: J-gap
- Resistance: 5000.0
- Insulator Height:
  - 2.07
  - 52.5
- Thread Diameter:
  - 0.551
  - 14.0
Features:
- TRIVALENT METAL PLATING: Delivers superior anti-corrosion and anti-seizing properties, ensuring ease of installation and removal
- RECOMMENDED USAGE: Best for vehicles with OE fine wire iridium alloy plugs
- PLATINUM TIP GROUND ELECTRODE: Unless OE specified, platinum protection at the ground electrode provides excellent ignitability and service life
- SOLID COPPER CORE: 98% pure copper core offers superior heat dissipation, conductivity and ultra wide heat ranges
- ACTUAL OE or EQUIVALENT DESIGN: OEM quality construction fine wire iridium alloy center electrode provides consistent performance
- IRIDIUM ALLOY CENTER ELECTRODE: Iridium's density (6x that of platinum) and extremely high melting point is perfect for modern high efficiency engines
NGK Laser Iridium spark plugs offer the best combination of performance and longevity. Engineered specifically for OE applications, Laser Iridium spark plugs are tested to the highest standards to ensure quality and durability. Iridium tipped center electrode provides durability six times harder than platinum. NGKs high grade pure alumina ceramic and 98 percent pure copper core prevents the spark plug from overheating while providing reliable starts. Most Laser Iridium spark plugs feature a platinum pad on the ground electrode for even wear in distributorless ignition systems.
Suggested Purchase Quantity: 8
- Most jobs typically require 8 of this item.
This item must be purchased in quantities of 4

This Part Fits the Following OEM/Substitute Numbers:

12561454, 12568387, 12578277, 1835616T, 1835762T, 19158039, 19158041, 19256067, 241-921, 24504873, 25161677, 25163148, 25166821, 25333938, 41-101, 41-902, 41-908, 41-921...VIEW MORE

Additional Fitment Information:

Vehicle	Block	CC	Engine	CID
1999 - GMC C1500	V	-	8 Cyl 5.7L	350

32 In Stock

Limited-Time Offer

$19.38 USD

$23.26 USD


Brand	NGK
Part #	N125599
Condition	New
Warehouse	B

1999 GMC C1500 Spark Plug 8 Cyl 5.7L NGK

NGK Laser Platinum Spark Plug
Gap 0.060"
Laser Platinum Spark Plug
Product Attributes:
- Center Electrode Design: Fine Wire
- Center Electrode Insulator Tip Projection:
  - 0.12
  - 3.0
- Washer Included: No
- Electrical Terminal Type: Non-removable Nut
- Grade Type: Performance
- Service Number: Ptr5c-13
- Ground Electrode Tip Material: Platinum
- Short Style Spark Plug: No
- Skirt: No
- Center Electrode Core Material: Copper
- Part Number: Ptr5c-13
- Resistor Type: Yes
- Stock Number: 7740
- Ground Electrode Tip Design: Standard
- Pre-Gap Size:
  - .052
  - 1.3
- Ground Electrode Core Material: Nickel
- Material Grade: Double Platinum
- Center Electrode Projection: Mid Projection
- Seat Type: Tapered
- Ground Electrode Quantity: 1
- Insulator Material: Ceramic
- Hex Size: 5/8" (16mm)
- Reach:
  - 0.689
  - 17.5
- Center Electrode Tip Material: Platinum
- Skirt Length: 0.0
- Manufacturer Heat Range: 5
- Ground Configuration: J-gap
- Resistance: 5000.0
- Insulator Height:
  - 2.07
  - 52.5
- Thread Diameter:
  - 0.551
  - 14.0
Features:
- RECOMMENDED USAGE: Best for vehicles with OE fine wire platinum alloy plugs
- ACTUAL OE or EQUIVALENT DESIGN: OEM quality construction fine wire platinum alloy center electrode provides consistent performance
- SOLID COPPER CORE: 98% pure copper core offers superior heat dissipation, conductivity and ultra wide heat ranges
- PLATINUM TIP GROUND ELECTRODE: Unless OE specified, platinum protection at the ground electrode provides excellent ignitability and service life
- PLATINUM ALLOY CENTER ELECTRODE: Longer wearing and higher temperature resistance compared to traditional nickel spark plugs
- TRIVALENT METAL PLATING: Delivers superior anti-corrosion and anti-seizing properties, ensuring ease of installation and removal
NGK Laser Platinum spark plugs provide high ignitability and longer service life compared to conventional nickel spark plugs. Laser Platinum plugs are tested to the highest standards to ensure quality and durability. Engineered specifically for OE applications. Laser platinum plugs provide stable idling, superior anti-fouling, improved fuel efficiency and lower emissions. High-grade pure alumina ceramic and 98% pure copper core prevents spark plug from overheating and provides reliable starts. Most Laser Platinum spark plugs feature a platinum pad on the ground electrode for even wear in distributorless ignition systems.
Suggested Purchase Quantity: 8
- Most jobs typically require 8 of this item.
This item must be purchased in quantities of 4

This Part Fits the Following OEM/Substitute Numbers:

12556183, 12561466, 12571535, 1844038T, 25164048, 25165715, 41-810, 41-812, 41-919, 41-931, 41-936, 41-937, 41-942, 41-943, 41-948, 41-950, 41-963, 41-980...VIEW MORE

Additional Fitment Information:

Vehicle	Block	CC	Engine	CID
1999 - GMC C1500	V	-	8 Cyl 5.7L	350

20 In Stock

Limited-Time Offer

$18.64 USD

$22.37 USD


Brand	NGK
Part #	N127740
Condition	New
Warehouse	B

1999 GMC C1500 Spark Plug 8 Cyl 5.0L Autolite

Autolite XP605 Iridium XP Spark Plug
Gap .060 (in)
Iridium XP Spark Plug
Product Attributes:
- Center Electrode Projection: Mid Projection
- Center Electrode Design: Fine Wire
- Center Electrode Insulator Tip Projection:
  - 0.133
  - 3.38
- Seat Type: Tapered
- Washer Included: No
- Electrical Terminal Type: Non-removable Nut
- Ground Electrode Quantity: 1
- Grade Type: Performance
- Core Nose Length:
  - 0.65
  - 16.51
- Ground Electrode Tip Material: Platinum
- Center Electrode Core Material: Copper
- Hex Type: Hex
- Resistor Type: Yes
- Insulator Material: Ceramic
- Indexed: No
- Hex Size: 5/8
- Reach:
  - 0.679
  - 17.25
- Center Electrode Tip Material: Iridium
- Ground Electrode Tip Design: Taper Cut
- Pre-Gap Size:
  - 0.06
  - 1.52
- Resistance: 4000
- Insulator Height:
  - 2.026
  - 51.46
Features:
- Engineered with an Iridium-enhanced center electrode and fine-wire design that increases ignitability and provides a more focused ignition for improved engine performance.
- Its proprietary platinum ground electrode provides increased durability* and resistance to wear, extending the life of the plug.
- The tapered ground wire improves engine ignitability.
- Its high alumina multi-rib ceramic insulator provides thermal conductivity and superior insulation for increased strength while preventing flash-over.
- Designed with a nickel-plated shell that is corrosion resistant to provide increased durability for extended periods.
- Includes a lifetime limited warranty that guarantees optimum performance equal to OE designed plugs.
Autolite® Iridium XP spark plugs are engineered with an iridium-enhanced fine-wire and a proprietary, platinum ground electrode, to increase durability*, while its tapered ground wire maximizes engine efficiency, delivering improved engine performance, fuel efficiency, acceleration, and ignitability.
Suggested Purchase Quantity: 6
- Most jobs typically require 6 of this item.
This item must be purchased in quantities of 4

This Part Fits the Following OEM/Substitute Numbers:

1U1E124405AB, 3015, 38, 41-948, 4714, 6723, 7164, 7408, 8119, 9404, AGSF42FCM, AGSF42FM1, HR9DI33Y, IT20, IT20TT, PTR5C-13, RS14WYPB5, SP438...VIEW MORE

Additional Fitment Information:

Vehicle	Block	CC	Engine	CID
1999 - GMC C1500	V	-	8 Cyl 5.0L	305

50 In Stock

Limited-Time Offer

$11.12 USD

$13.34 USD


Brand	Autolite
Part #	A77XP605
Condition	New
Warehouse	B

UPC: 009100044563

1999 GMC C1500 Spark Plug Denso

Spark Plug Iridium TT
Gap 0.040 Iridium TT - Ultimate Endurance and Power, 0.4mm Iridium and 0.7mm Platinum Twin-Tip Technology
Spark Plug Iridium TT
Spark Plug - Iridium TT
Product Attributes:
- Seat Type: Tapered
- Ground Electrode Quantity: 1
- Center Electrode Core Material: Copper
- Hex Size: 16
- Reach: 18.0
- Center Electrode Tip Material: Iridium
- Ground Electrode Tip Design: Platinum Twin-tip
- Manufacturer Heat Range: 16
- Ground Configuration: Twin-tip
- Pre-Gap Size: 1.0
- Resistance: 5000.0
- Ground Electrode Core Material: Nickel
- Thread Diameter: 14.0
Durability of an OE style plug combined with Power & Torque of high performance.
Suggested Purchase Quantity: 4
- Most jobs typically require 4 of this item.

This Part Fits the Following OEM/Substitute Numbers:

002 159 57 03, 002 159 58 03, 003 159 04 03, 003 159 05 03, 003 159 28 03, 003 159 36 03, 003 159 37 03, 12 57 1164, 12556183, 12568387, 12571164, 12571533, 12571535, 12578277, 12591131, 12607234, 12609877, 12621258...VIEW MORE

Additional Fitment Information:

Vehicle
1999 - GMC C1500

2 In Stock

Limited-Time Offer

$19.76 USD

$23.71 USD


Brand	Denso
Part #	D454713
Condition	New
Warehouse	B

UPC: 042511047136

1999 GMC C1500 Exhaust System Kit 8 Cyl 5.7L Flowmaster

Single; Dual Rear Same Side Exit; w/Dual Cats; Includes 2.5 in. Tailpipes/70 Series(TM) Big Block II Muffler/3 in. Logo Embossed Stainless Tips;50 State Legal / California Emissions Compliant w/Dual Catalytic Converters
American Thunder Cat Back Exhaust System; Single; Dual Rear Same Side Exit; w/Dual Cats; Includes 2.5 in. Tailpipes/70 Series™ Big Block II Muffler/3 in. Logo Embossed Stainless Tips;
American Thunder Cat Back Exhaust System
Product Attributes:
- Tip Quantity: 2
- Tubing Diameter: 2.500 In.
- Exhaust Type: Single
- Inlet Diameter: 2.000 In.
- WARNING CA Proposition 65: Yes
- Exhaust Series: American Thunder
- Heat Shield Attached: No
- Exit Style: Straight
- Muffler Series: 70 Series Big Block
- Inlet Inside Diameter: N/a
- Outlet Outside Diameter: 2.500 In.
- Tail Pipe Diameter: 2.500 In.
- Exit Position: Dual Rear Same Side
- Muffler Count: 1
- System Type: Cat Back
- Muffler Part Number: 530702
Features:
- Mandrel Bent 16ga Aluminized Tubing
- Moderate to Aggressive Exterior Exhaust Tone
- Includes Hangers And Hardware For Easy Installation
- Dyno Tuned for Maximum Performance
- Premium Flowmaster Quality
- 3 Year Limited Warranty
- Made in the USA
For the person who is looking for an aluminized steel cat-back exhaust system with an aggressive exterior tone and moderate interior tone. The American Thunder(R) system is heavy 16-gauge mandrel-bent aluminized steel tubing for durability and maximum performance. Includes a aluminized steel 70(TM) Series Big Block II performance muffler for that perfect blend of a deep aggressive exterior sound, with a moderate interior tone that won't drive you out of the cab when having a conversation. The dual 2.50-inch tailpipes clear the factory spare tire and give you two choices of exit locations. Straight out the back for that true dual look, or exiting out each side behind the rear wheels, which is ideal for towing. The system is finished off with a pair of highly polished 3.00-inch 304 stainless steel tips embossed with the Flowmaster(R) name. Designed for an easy fit, these systems include all necessary parts, hardware and instructions for an easy installation you can do at home. Covered by our 3-year Limited Warranty. For those who prefer full stainless steel construction with a Lifetime Limited Warranty, check out part# 817470. Notes: Fits 2/4 wheel drive models with extended cab/short bed configuration 141-inch wheelbase.
Suggested Purchase Quantity: 2
- Most jobs typically require 2 of this item.