1971 Oldsmobile 442 Exhaust Parts

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Hedman
  • Mid-Length Headers For 67-81 Camaro, Nova, G-Body with 283-400
  • Air Conditioning: No Power Steering: Yes Auto Transmission - Column: Yes Auto Transmission - Floor: Yes Manual Transmission - Column: No Manual Transmission - Floor: No Footnotes: Will not fit (Saginaw) close ratio P/S with 825 power steering box. Footnotes: (1) Without smog injection or injection heads. Footnotes: (103) Will fit with angle plug heads (Chevy aluminum only, L98). Footnotes: (121) Must modify rotary A/C bracket. Emissions Notes: 1974 and earlier vehicles WITHOUT A.I.R. Does not require EO if existing emission controls are not removed. Engine Family: SB Chevy 283-400 (Gen 1)
  • Standard-Duty Headers For Various Camaro, Chevelle, El Camino, Nova, Regal, Cutlass, Grand Prix & Others; SB Chevy 283-400; 1-5/8 in. Mid-Length Tubes, 3 in. Collector; Non-E.O. ; Uncoated Mild-Steel
  • Product Attributes:
    • California Proposition 65: Warning: Cancer. For More Info Visit Www.p65warnings.ca.gov
    • Header Port Shape: Round
    • Quantity: Sold As A Pair.
    • with A.I.R. System: No
    • Cylinder Head: Stock Profile Heads
    • Tuned: No
    • Cylinder Head Port Shape: Round
    • Header Style: Mid-length Tube
    • Manual Transmission - Column: No
    • Finish: Uncoated
    • Flange Style: Standard
    • Collector Bolts Included: Yes
    • Bolts/Studs Included: Yes
    • Automatic Transmission - Floor: Yes
    • with EGR: No
    • Tube Material Thickness: 16g
    • Tube Diameter: 1-5/8 In.
    • Automatic Transmission - Column: Yes
    • Package Contents: Headers, Ball And Socket Reducers (exhaust Adapters), Gaskets, Mounting Hardware
    • Reducer Outlet Size: 2-1/2 In.
    • Tube Size: 1-5/8 In.
    • Port Shape: Round
    • Tube Length: Mid-length Tubes
    • Manual Transmission - Floor: No
    • Collector Diameter: 3 In.
    • Tube Style: Mid-length
    • Variations: 68606, 68603, 68608 & 63608. 62600, 62606 & 62603 304 Stainless Steel.
    • Collector Size: 3 In.
    • Header Finish: Uncoated
    • IMPORTANT!: Automatic Transmission Only!
    • Mounting Hardware Included: Yes
    • Weld-Up: No
    • Collector Attachment: 3 In.
    • Header Fasteners Included: Yes
    • Y-Pipe Included: No
    • Contents: Headers, Gaskets (when Applicable), 3-bolt Exhaust Adapters, Hardware
    • Finish Type: Uncoated Mild Steel! Shipped With Temporary Paint.
    • Notes: 67-81 F; 64-83 A, 82-88 G; 68-79 X; 71-94 B; 84-04 Astro 283-400
    • Motor Mounts Included: No
    • Primary Tube Diameter (in): 1.625 In.
    • Crossover Pipe Included: No
    • Header Construction: Mild Steel- Standard-duty
    • Replacement Head Flange Gasket: 27500
    • Tube Design: Standard
    • Material: Mild Steel
    • Power Steering: Yes
    • E.O. #: No
    • Exhaust System Dia: 2-1/2 In.
    • Flange Thickness: 0.3125 In.
    • Engine: Chevy Sb 283-400 (gen 1) 1958-86
    • LS SWAP: No
    • Installation Hardware Included: Yes
    • Reducers Included: Yes
    • Gasket Or Seal Included: Yes
    • Primary Tube Gauge: 16g
    • Header Material: Mild Steel
    • Catalytic Converter(s) Included: No
    • Replacement Gasket: 27500
    • Collector Style: Ball And Socket Style (gasketless)
    • Emissions Notes: Not Legal For Street Use On '75-later Model Years! Legal For Off-road Use Only.
  • Features:
    • Handcrafted, Mild Steel Construction.
    • The Mid-Length Tube Header Design Provides Significantly More Low and Mid-range Power than Cast Manifolds, and Provide Better Ground Clearance And Component Compatibility Than Long Tube Headers.
    • Ball & Socket Collector Design requires No Gasket, and Allows For More Exhaust System Misalignment than Old School, Gasket-Style Header Collectors
    • Includes All The Necessary Mounting Hardware, Gaskets and Reducers (exhaust adapters)
    • Limted Lifetime Warranty On Construction, Five Year Warranty on Factory-Applied Header Coating!
    • Proud To Say, Made In The USA, Since 1954!
  • Hedman Hedders has been manufacturing quality headers in the USA since 1954, and they've been manufacturing long and MID-LENGTH tube headers for Chevy passenger cars for decades. Each set uses mild steel, smooth flowing, CNC mandrel bent tubes, that are hand-welded to ensure each pair is identical to the next. Hedman's unique, gasketless ball and socket collector design allows your Small Block Chevy exhaust system to bolt up, even if it is not perfectly aligned with the header collectors.

    These uncoated, MID-LENGTH tube headers are one of the most versatile headers Hedman Hedders manufacturers. While we've seen them on rare builds, like a SB Chevy equipped Studebaker, these MID-LENGTH headers are actually cataloged to fit Small Block Chevy V8 powered, 1967-81 Chevy Camaros; 1964-1987 GM A-Body and G-Body vehicles (Buick Regal, Chevy Chevelle, El Camino, Monte Carlo, Olds Cutlass, Pontiac Grand Prix); '68-79 Chevy II and Nova. Heck, they even fit 1984-2004 Chevy AstroVans. The smooth 1-5/8 in tube design provides ample exhaust flow to let your 283-400 SB Chevy engine breathe easy, and improve horsepower and torque over stock manifolds.

    These headers are uncoated, and ship from the factory with a temporary black paint that will burn off when submitted to normal operating temperatures. For protection against the element and lower underhood temperatures, these headers are also available with a silver or black ceramic-metallic finish.

    Each set includes a pair of gaskets, header flange bolts and collector bolts. No collector gasket is needed.

    Hedman Hedders is so confident in the quality of its headers that these headers are factory backed by a Limited Lifetime Warranty.


Additional Fitment Information:
Vehicle Region Fuel Type
1971 - Oldsmobile 442 United States GAS

Flowmaster
  • Single Side Exit; 2.5 in. Diameter Sold In Pairs; Hardware/Hangers Are Required For Installation; Offset Inlet/Offset Outlet Mufflers Required Use Offset Inlet/Offset Outlet Mufflers Only
  • Tailpipe Set; Single Side Exit; 2.5 in. Diameter Sold In Pairs; Hardware/Hangers Are Required For Installation; Offset Inlet/Offset Outlet Mufflers Required;
  • Tailpipe Set
  • Product Attributes:
    • Tubing Diameter: 2.500 In.
    • Automotive Item Grade: High Performance
    • Exhaust Pipe Wall Max Gauge: 16
    • Exit Position: Single Side
    • Inlet Diameter: 2.500 In.
    • System Type: Tailpipe
    • WARNING CA Proposition 65: No
    • Fitment: Direct Oe Replacement
  • Features:
    • Mandrel Bent 16 Gauge Aluminized Tubing
    • Exits At Rear Of Vehicle
    • Aluminized Steel
    • Premium Flowmaster Quality
    • 3 Year Limited Warranty
  • These Builder Series tailpipes are constructed from 2.50-inch mandrel-bent 16-gauge aluminized steel tubing for maximum flow, tuck up high in the chassis for good clearance and exit straight-out the back under the rear bumper. Designed to be used with Side Inlet/Opposite Side Outlet mufflers such as part# 942548 (Super 44 Series) or 53058 (Super 50 Series) mufflers. Covered by our 3-year Limited Warranty. Note: Not designed to fit in factory bumper cutouts. Some fitment may be necessary. Does Not include installation hardware or exhaust tips.
  • Suggested Purchase Quantity: 2
    • Most jobs typically require 2 of this item.

Additional Fitment Information:
Vehicle Block CC Engine CID
1971 - Oldsmobile 442 V 7456 8 Cyl 7.5L 455

Flowmaster
  • Dual; Dual Rear Exit; Includes 2.5 in. Tubing/Super 40 Series(TM) Mufflers/H-Pipe/Hardware; 409 Stainless Steel;Legal On Non-Emissions Controlled Vehicles Or For Race Use
  • American Thunder Header Back Exhaust System; Dual; Dual Rear Exit; Includes 2.5 in. Tubing/Super 40 Series™ Mufflers/H-Pipe/Hardware; 409 Stainless Steel;
  • American Thunder Header Back Exhaust System
  • Product Attributes:
    • Tip Quantity: 0
    • Tubing Diameter: 2.500 In.
    • Exhaust Type: Dual
    • Inlet Diameter: 2.500 In.
    • Sound Level: Aggressive
    • WARNING CA Proposition 65: Yes
    • Exhaust Series: American Thunder
    • Heat Shield Attached: No
    • WARNING CA Proposition 65 Message: Warning: Cancer And Reproductive Harm - Www.p65warnings.ca.gov
    • Exit Style: Straight
    • Muffler Series: Super 40 Series
    • Inlet Inside Diameter: N/a
    • Outlet Outside Diameter: 2.500 In.
    • Tail Pipe Diameter: 2.500 In.
    • Exit Position: Dual Rear
    • Tip Diameter: N/a
    • Muffler Count: 2
    • System Type: Header Back
    • Muffler Part Number: Kit Only
  • Features:
    • Mandrel Bent 16ga 409S Stainless Tubing
    • Limited Lifetime Warranty
    • Aggressive And Powerful Exterior Exhaust Tone
    • Includes Hangers and Hardware For Easy Installation
    • Header Back System
    • Dual Out Rear Exit
    • Dyno Tuned for Maximum Performance
    • Premium Flowmaster Quality
  • This American Thunder(R) exhaust system comes as a complete true dual crossmember-back exhaust for your 1968-1972 GM A-body with a V8 engine. These dual exhaust systems feature 2.50-inch mandrel-bent stainless steel tubing for maximum performance, includes a built-in H-pipe/balance tube flowing into a pair of large case Super 40(R) mufflers that deliver an aggressive interior and exterior tone and are suited to the enthusiast who wants their performance to be heard. The 2.50-inch tailpipes exit at a slight angle down under the rear bumper for a strong muscular look. The system includes all hangers and necessary hardware for installation. Like all Flowmaster(R) systems, the benefits include improved throttle response, power and mileage and is covered by our Lifetime Limited Warranty.
  • Suggested Purchase Quantity: 2
    • Most jobs typically require 2 of this item.

This Part Fits the Following OEM/Substitute Numbers:
15894, 17119, 913250

Additional Fitment Information:
Vehicle Block CC Engine CID
1971 - Oldsmobile 442 V 7456 8 Cyl 7.5L 455

Flowmaster
  • 2 in. Offset Inlet/Opposite Side Offset Outlet; Case Dimensions 4 in. x 9.75 in. x 13 in.; 19 in. Overall Length; Aluminized Steel Not Direct Fit-Some Adaptation Required
  • 40 Series™ Delta Flow Muffler; 2 in. Offset Inlet/Opposite Side Offset Outlet; Case Dimensions 4 in. x 9.75 in. x 13 in.; 19 in. Overall Length; Aluminized Steel;
  • 40 Series™ Delta Flow Muffler
  • Product Attributes:
    • Tip Quantity: 0
    • Automotive Item Grade: High Performance
    • Muffler Type: Reflection
    • Outlet Connection Type: Pipe
    • Outlet Position: Offset
    • Inlet Diameter: 2.000 In.
    • Sound Level: Aggressive
    • WARNING CA Proposition 65: No
    • Fitment: Universal
    • Body Width: 9.750 In.
    • Muffler Series: 40 Series Delta Flow
    • Inlet Inside Diameter: 2.000 In.
    • Outlet Outside Diameter: 2.000 In.
    • Main Piping Diameter: 2.000 In.
    • Inlet Type: Single Offset
    • Inlet Position: Offset
    • Inlet Outside Diameter: 2.000 In.
    • Inlet Connection Type: Pipe
    • Outlet Type: Single Offset Outlet
  • Features:
    • Durable Fully Welded 16ga Aluminized Steel
    • Race Proven Patented Delta Flow® Technology
    • Excellent Street/Strip And Off Road Application
    • No Internal Packing To Blowout
  • This two chamber design incorporates Flowmaster's Delta Flow(R) technology. The Delta deflectors generate increased scavenging for better performance and reduced interior sound. Milder exterior tone and reduced interior resonance over standard 40 series. Constructed of 16 gauge aluminized steel and fully MIG welded for maximum durability.
  • Suggested Purchase Quantity: 2
    • Most jobs typically require 2 of this item.

Additional Fitment Information:
Vehicle Block CC Engine CID
1971 - Oldsmobile 442 V 7456 8 Cyl 7.5L 455

Flowmaster
  • Dual; Dual Rear Exit; Includes 2.5 in. Tubing From Transmission X-Member Back/H-Pipe/Hardware; Requires Offset/Offset Mufflers;Legal On Non-Emissions Controlled Vehicles Or For Race Use Muffler Must Be Purchased Separately~Use Offset Inlet/Offset Outlet Mufflers Only
  • Header-Back Pipe Kit; Dual; Dual Rear Exit; Includes 2.5 in. Tubing From Transmission X-Member Back/H-Pipe/Hardware; Requires Offset/Offset Mufflers;
  • Header-Back Pipe Kit
  • Product Attributes:
    • Tip Quantity: 0
    • Tubing Diameter: 2.500 In.
    • Exhaust Type: Dual
    • WARNING CA Proposition 65: No
    • Exhaust Series: Pipes Only
    • Heat Shield Attached: No
    • Exit Style: Straight
    • Inlet Inside Diameter: 2.500 In.
    • Outlet Outside Diameter: 2.500 In.
    • Tail Pipe Diameter: 2.500 In.
    • Exit Position: Dual Rear
    • Tip Diameter: N/a
    • System Type: Pipe
    • Muffler Part Number: Not Included
  • Features:
    • 2.5 in. Tubing Only
    • No Mufflers In Pipe Kit
    • Transmission Cross-Member Back
    • Dual Out Rear Exit
    • Premium Flowmaster Quality
    • 3 Year Limited Warranty
  • This mandrel-bent crossmember-back exhaust system is custom designed for most 1964-1972 GM A-body cars and is perfect for the person looking for true dual exhaust system. This system comes complete minus the mufflers and allows you to choose the sound level of the Flowmaster performance mufflers you desire for your vehicle. System features include all mandrel-bent 2.50-inch aluminized steel tubing, an H-pipe to equalize the exhaust gas pressures and sound for maximum performance and maximum clearance and includes two styles of tailpipe exits. Designed for an easy fit, these systems include all necessary parts, hardware, and instructions for an easy installation. Covered by our 3-year Limited Warranty. Notes: Requires 2.50-inch Offset Inlet/Opposite side Offset Outlet such as part# 942548 (Super 44 Series) or 52558 (50 Series) mufflers.
  • Suggested Purchase Quantity: 2
    • Most jobs typically require 2 of this item.

Additional Fitment Information:
Vehicle Block CC Engine CID
1971 - Oldsmobile 442 V 7456 8 Cyl 7.5L 455

Flowmaster
  • 40 Series™ Delta Flow Muffler
  • 2 in. Offset Inlet/Opposite Side Offset Outlet; Case Dimensions 4 in. x 9.75 in. x 13 in.; 19 in. Overall Length; Aluminized Steel Not Direct Fit-Some Adaptation Required
  • 40 Series™ Delta Flow Muffler; 2 in. Offset Inlet/Opposite Side Offset Outlet; Case Dimensions 4 in. x 9.75 in. x 13 in.; 19 in. Overall Length; Aluminized Steel;
  • 40 Series(TM) Delta Flow Muffler
  • Product Attributes:
    • Tip Quantity: 0
    • Automotive Item Grade: High Performance
    • Muffler Type: Reflection
    • Outlet Connection Type: Pipe
    • Outlet Position: Offset
    • Inlet Diameter: 2.000 In.
    • Sound Level: Aggressive
    • WARNING CA Proposition 65: No
    • Fitment: Universal
    • Body Width: 9.750 In.
    • Muffler Series: 40 Series Delta Flow
    • Inlet Inside Diameter: 2.000 In.
    • Outlet Outside Diameter: 2.000 In.
    • Main Piping Diameter: 2.000 In.
    • Inlet Type: Single Offset
    • Inlet Position: Offset
    • Inlet Outside Diameter: 2.000 In.
    • Inlet Connection Type: Pipe
    • Outlet Type: Single Offset Outlet
  • Features:
    • Durable Fully Welded 16ga Aluminized Steel
    • Race Proven Patented Delta Flow® Technology
    • Excellent Street/Strip And Off Road Application
    • No Internal Packing To Blowout
  • This two chamber design incorporates Flowmaster's Delta Flow(R) technology. The Delta deflectors generate increased scavenging for better performance and reduced interior sound. Milder exterior tone and reduced interior resonance over standard 40 series. Constructed of 16 gauge aluminized steel and fully MIG welded for maximum durability.
  • Suggested Purchase Quantity: 2
    • Most jobs typically require 2 of this item.

Additional Fitment Information:
Vehicle Block CC Engine CID
1971 - Oldsmobile 442 V 7456 8 Cyl 7.5L 455

Magnaflow
  • Multiple Exit Options
  • Street Series Stainless Crossmember-Back System
  • Street Series Stainless Crossmember-Back System
  • Product Attributes:
    • Main Piping Diameter: 2.5
    • Muffler Type: Straight-through
    • Tip Diameter: 2.75
    • Muffler Finish: Satin
    • Exit Style: Multiple Exit Options
    • Tip Length: 9
    • Tip Type: Welded;single Wall;turndown;cut Edge
    • Inlet Connection Type: Weld-on
    • Subtitle: Crossmember-back

Additional Fitment Information:
Vehicle Block CC Engine CID
1971 - Oldsmobile 442 V 7456 8 Cyl 7.5L 455
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