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J2 Gold 4-1 Mid Length Exhaust Header For Chevy 265-400 Small Block GEN I V8

Shipping restriction: This item cannot be shipped to the state of California, New York and Maine.

Free Shipping witihn lower 48 states

International Buyer: Shipping charge does not included Custom Charge and Brokerage Fee (Detail)

California's Prop 65 Warning: Click Here for Detail

Getting more air into your engine and more exhaust out is the key to a performance motor. That's where exhaust headers are significant as the first revenue of an exhaust system. Exhaust performance headers manipulate the air flow with the performance-robbing exhaust manifold that came with your car. Headers provide each cylinder with its own mini exhaust pipe, which means exhaust headers prevent interference among cylinders, thus, the backpressure that occurs in common exhaust manifolds. When cylinders don't have to fight with each other to expel their exhaust, they can put more power through the wheels, Pushing the vehicle. Combining with a high-performance cold air intake and a catback exhaust system, a header system removes all restrictions of your engine, then, it is able to perform at its full potential.

  • Material: T304 Stainless Steel
  • Color: Gold
  • Surface Finish: Sulfuric Acid Dipped / Polished
  • Header Spec: 2x 4-1 Design. Standard SBC 3-Bolt Flange. 3" OD to 2.5" OD Weldable Collector Reducer Flanges.
  • Pipe Spec: 1 Piece Construction on each header. Optimized Tubing for the Small Block 265/267/283/302/305/307/327/350/400 cubic inch engines
  • Inlet/Outlet: 1.625" OD/3.00" ID
  • Sensor: N/A
  • Wall Thickness: 3/8" Flange / 16-Gauge Piping Walls
  • Headers are made with high quality stainless steel , Mandrel bent tubing, CNC Machined Flanges.
  • Increase Horsepower and Torque. Gain More performance Due to More Air Flow
  • Better fuel mileage with improved combustion


For 1971-1975 Chevrolet Bel Air
For 1971-1972 Chevrolet Biscayne
For 1971-1972 Chevrolet Brookwood
For 1976-1987 Chevrolet Camaro
For 1979-1981 Oldsmobile Cutlass
For 1979-1984 Oldsmobile Cutlass Calais
For 1980-1983 Oldsmobile Cutlass Cruiser
For 1979-1987 Oldsmobile Cutlass Salon
For 1979-1987 Oldsmobile Cutlass Supreme
For 1979-1987 Pontiac Firebird
For 1978-1981 Pontiac Grand Prix
For 1971-1976 Chevrolet Impala
For 1971-1972 Chevrolet Kingswood
For 1973-1976 Chevrolet Laguna
For 1979-1980 Pontiac LeMans
For 1979-1983 Chevrolet Malibu
For 1984-1987 Chevrolet Monte Carlo
For 1975-1976 Chevrolet Nova
For 1979-1987 Buick Regal

Remark: Fit Models with 265-400 Cu.In Small Block GEN I V8 Engines


All exhaust and suspension products are deemed for "off-road use only"- please check local laws regarding the modification of the exhaust systems by checking the vehicle code for your state. Many states are more stringent on exhaust modification laws and to pass SMOG. Please check your local laws.

All exhaust system components will alter and affect the vehicle's overall sound in pitch and volume. All to which is subjective in manner. we will not claim responsibility and/or accept returns based on an individual's personal preference.

Recommended for Racing/Off-Road Use ONLY, Will Not Pass Emissions Test

Product Content:

  • 1 Pair x Exhaust Header Manifold Kit (Left & Right)
    Hardware if any is shown in the picture above

Cross Reference Number:

  • J2-HD-GOLD-008, J2-HD-GOLD-008

The product does not come with manual/instruction, Professional Install Recommended