Pontiac Le Mans Exhaust System

FLOWMASTER AMERICAN THUNDER HEADER-BACK EXHAUST SYSTEM, ALUMINIZED STEEL, MUFFLERS SOLD SEPARATELY -- Tubing Pipes Only, Dual Pipes Out The Rear Exit (DOR), Benefits Include Reduced Backpressure For Improved Acceleration And Towing Power, Cooler Underhood Temperatures, Cleaner And More Efficient Burn In The Combustion Chambers, And Better Fuel Economy, Features Mandrel Bent 16 Gauge Aluminized Steel Tubing, Delivers Lesser Sound Volume, Comes With 2.5" Tubing From Transmission X-Member Back, H-Pipe, And Hardware, Requires You To Purchase 2.5" In/Out-Offset/Offset Mufflers Such As Flowmaster #952548, Welding All Slip-Fit Connections Is Strongly Recommended, With Flowmaster's Limited Warranty

Fits the following 1964-1972 Pontiac LeMans submodels:

• 1964-1972: Base; All Engines;
• 1972-1972: Luxury; All Engines;

• 1972-1972: Sport; All Engines;

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FLOWMASTER AMERICAN THUNDER HEADER-BACK EXHAUST SYSTEM, ALUMINIZED STEEL -- 2.5 in. tailpipe diameter; Dual rear exit exhaust system; Two mufflers with single inlet and outlet configuration each; Includes installation hardware, gaskets, H-pipe, and Super 40 Series mufflers; Benefits include reduced backpressure for improved acceleration and towing power, cooler under hood temperatures, cleaner and more efficient burn in the combustion chambers, and better fuel economy; Features mandrel-bent 16-gauge aluminized steel tubing; Delivers lesser interior resonance; Increases horsepower and torque; Welding all slip-fit connections recommended; With Flowmaster's limited 3-year warranty.

Fits the following 1964-1972 Pontiac LeMans submodels:

• 1964-1965: Base; 8 Cyl 6.4L; "GAS, CARB"
• 1964-1967: Base; 8 Cyl 5.3L; "GAS, CARB"

• 1964-1972: Base; All Engines;

• 1968-1969: Base; 8 Cyl 7.0L; "GAS, CARB"

• 1968-1972: Base; 8 Cyl 5.7L; "GAS, CARB"

• 1968-1972: Base; 8 Cyl 6.6L; "GAS, CARB"

• 1969-1969: Safari; 8 Cyl 5.7L; "GAS, CARB"

• 1969-1969: Safari; 8 Cyl 6.6L; "GAS, CARB"

• 1969-1969: Safari; 8 Cyl 7.0L; "GAS, CARB"

• 1970-1970: Base; 8 Cyl 7.5L; "GAS, CARB"

• 1970-1970: Sport; 8 Cyl 7.5L; "GAS, CARB"

• 1970-1971: Sport; 8 Cyl 5.7L; "GAS, CARB"

• 1970-1972: Sport; 8 Cyl 6.6L; "GAS, CARB"

• 1971-1971: T37; 8 Cyl 5.7L; "GAS, CARB"

• 1972-1972: Base; 8 Cyl 6.6L; "GAS, CARB, VIN S"

• 1972-1972: Base; 8 Cyl 7.5L; "GAS, CARB, VIN W"

• 1972-1972: Base; 8 Cyl 7.5L; "GAS, CARB, VIN X"

• 1972-1972: Luxury; 8 Cyl 5.7L; "GAS, CARB"

• 1972-1972: Luxury; 8 Cyl 6.6L; "GAS, CARB"

• 1972-1972: Luxury; 8 Cyl 6.6L; "GAS, CARB, VIN S"

• 1972-1972: Luxury; 8 Cyl 7.5L; "GAS, CARB, VIN W"

• 1972-1972: Luxury; 8 Cyl 7.5L; "GAS, CARB, VIN X"

• 1972-1972: Luxury; All Engines;

• 1972-1972: Sport; 8 Cyl 6.6L; "GAS, CARB, VIN S"

• 1972-1972: Sport; 8 Cyl 7.5L; "GAS, CARB, VIN W"

• 1972-1972: Sport; 8 Cyl 7.5L; "GAS, CARB, VIN X"

• 1972-1972: Sport; All Engines;

Fits 25 more submodels. (Show all) Show less info

FLOWMASTER AMERICAN THUNDER CAT-BACK EXHAUST SYSTEM, ALUMINIZED STEEL -- Dual Pipes Out The Rear Exit (DOR), Benefits Include Reduced Backpressure For Improved Acceleration And Towing Power, Cooler Under Hood Temperatures, Cleaner And More Efficient Burn In The Combustion Chambers, And Better Fuel Economy, Delivers Lesser Sound Volume, Features Mandrel Bent 16 Gauge Aluminized Steel Tubing, Comes With 3" Tubing From Transmission Cross Member Back, Super 40 Series Mufflers, H-Pipe, And Hardware, Welding All Slip-Fit Connections Is Strongly Recommended, With Flowmaster's Limited Warranty

Fits the following 1968-1972 Pontiac LeMans submodels:

• 1968-1972: Base; All Engines;
• 1972-1972: Luxury; All Engines;

• 1972-1972: Sport; All Engines;

Fits 1 more submodels. (Show all) Show less info

FLOWMASTER AMERICAN THUNDER EXHAUST SYSTEM KIT, ALUMINIZED STEEL -- Dual Side Exit Exhaust System (DOS), Benefits Include Reduced Backpressure For Improved Acceleration And Towing Power, Cooler Underhood Temperatures, A Cleaner And More Efficient Burn In The Combustion Chambers, Better Fuel Economy, Features Mandrel Bent 16 Gauge Aluminized Steel Tubing, Delivers Lesser Interior Resonance, Includes 3.00%X94 Tubing From Trans Crossmember Back, H-Pipe, Super 40 Series Mufflers, And Hardware, Welding All Slip Connections Recommended, With Manufacturer's Limited 3-Year Warranty

Fits the following 1964-1967 Pontiac LeMans submodels:

• 1964-1967: Base; All Engines;

DYNOMAX DUAL PIPE KIT -- Specifically Designed For Dynomax Header Part Number 85121, For Use With Super Turbo Muffler Part Number 17731 Or An Equivalent 2-1/4 in. I.D. Inlet X 2-1/4 in. I.D. Outlet, Single Off Set OEM Muffler, Glasspack Mufflers May Be Used With Slight Modifications, The Legal Use Of This Kit Is Based On The Converter Used, Unless Certified Or Exempted By CARB, Headers Are Not Legal For Sale Or Use In California On 1975 Or Later Model Catalyst-Equipped Vehicles, Except Racing Vehicles Which May Not Be Used Or Operated On A Highway, Pre-Catalyst Vehicles Must Utilize Original Emission Control Devices Which The Customer Should Reinstall, For Racing Use Only And Not Intended Or Applicable For Highway Use In All Other States, Muffler And Muffler U-Clamp Not Included, With Dynomax's Limited Lifetime Warranty

Fits the following 1978-1980 Pontiac LeMans submodels:

• 1978-1978: Base; 8 Cyl 5.0L; "GAS, CARB, VIN U"
• 1978-1978: Safari; 8 Cyl 5.0L; "GAS, CARB, VIN U"

• 1978-1979: Safari; 8 Cyl 5.7L; "GAS, CARB, VIN L"

• 1979-1980: Base; 8 Cyl 5.0L; "GAS, CARB, VIN H"

• 1979-1980: Safari; 8 Cyl 5.0L; "GAS, CARB, VIN H"

Fits 3 more submodels. (Show all) Show less info