Exhaust Downpipes & Headers

24 of 27 Items
  • SE Headers SE Headers SE Headers SE Headers SE Headers

    SE Headers

    This is a set of GN1Performance "SE HEADERS" for a 1986 or 1987 Buick Grand National, T Type, Turbo T, or GNX 3.8 liter turbo V6.They feature HUGE ports. These headers are only available in none polished raw stainless finish. They are complete...

    $699.00
  • KB4 4 Bolt Stainless Steel Headers KB4 4 Bolt Stainless Steel Headers KB4 4 Bolt Stainless Steel Headers

    KB4 4 Bolt Stainless Steel Headers

    This is a set of GN1Performance "KB-4 HEADERS" for a 1986 or 1987 Buick Grand National, T Type, Turbo T, or GNX 3.8 liter turbo V6.The difference between these and the regular "KB Headers" is a 4 bolt flange rather than a 3 bolt. They...

    $750.00
  • KB Stainless Steel Headers KB Stainless Steel Headers KB Stainless Steel Headers KB Stainless Steel Headers KB Stainless Steel Headers

    KB Stainless Steel Headers

    This is a set of GN1Performance "KB HEADERS" for a 1986 or 1987 Buick Grand National, T Type, Turbo T, or GNX 3.8 liter turbo V6.They feature HUGE ports and are welded all the way around each tube! These headers are only available in none...

    $699.00
  • Header Clamps Header Clamps

    Header Clamps

    This is a pair of 2.25" heavy duty header clamps. These work on aftermarket headers only. Replace your old clamps with new ones as a good insurance for them not to break on you.

    $59.00
  • Copper Header Gaskets

    Copper Header Gaskets

    This is a set of "COPPER HEADER GASKETS" for a 1986 or 1987 Buick Grand National, T Type, Turbo T, or GNX 3.8 liter turbo V6. Clean, flat surfaces are essential to a good seal and the best way to seal a exhaust is with Copper exhaust gaskets.

    $59.00
  • Exhaust Band Clamp Exhaust Band Clamp

    Exhaust Band Clamp

    This is a Stainless Steel Flat Exhaust Band Clamp. Available in 2.25" 3" and 4". Please choose from the options box the desired size.

    $21.50
  • Boost Controller Boost Controller

    Boost Controller

    This is a Boost Controller which is good for up to 50psi. It comes complete with all the hardware, fittings, and mounting brackets necessary.

    $99.00
  • 4 INCH V BAND AND CLAMP 4 INCH V BAND AND CLAMP 4 INCH V BAND AND CLAMP

    4 INCH V BAND AND CLAMP

    This is a "V-BAND AND CLAMP COMBO" kit comes with a stainless steel v band ring and a heavy duty t clamp. This is a great item for those who would like to build their own custom down pipes.

    $45.00
  • 3" Pypes Stainless Steel Exhuast System

    3" Pypes Stainless Steel Exhuast System

    This is a "Pypes 3 Inch Cat Back Exhaust System" for a 1986 or 1987 Buick Grand National, T Type, or Turbo T 3.8 liter turbo V6. Pypes Exhaust Systems are designed to deliver enhanced performance, provide extra punch in the passing lane...

    $649.00
  • 3" Inch Exhaust Test Pipe 3" Inch Exhaust Test Pipe 3" Inch Exhaust Test Pipe

    3" Inch Exhaust Test Pipe

    This is a GN1Performance 3" Exhaust Test Pipe for a 1986 or 1987 Buick Grand National, T Type, Turbo T, or GNX 3.8 liter turbo V6. This item is constructed out of 304 Stainless Steel. This pipe is 13.25" in overall length.

    $95.00
  • 3" Inch Exhaust Cutout 3" Inch Exhaust Cutout 3" Inch Exhaust Cutout

    3" Inch Exhaust Cutout

    This is a GN1Performance 3" Exhaust Cut Out for a 1986 or 1987 Buick Grand National, T Type, Turbo T, or GNX 3.8 liter turbo V6. This item is constructed out of  304 Stainless Steel. This pipe...

    $125.00
  • 3" DownPipe with Internal Wastegate 3" DownPipe with Internal Wastegate 3" DownPipe with Internal Wastegate 3" DownPipe with Internal Wastegate 3" DownPipe with Internal Wastegate

    3" DownPipe with Internal Wastegate

    This is a GN1Performance "3 INCH INTERNAL WASTEGATE DOWN PIPE " for a 1986 or 1987 Buick Grand National, T Type, Turbo T, or GNX 3.8 liter turbo V6. This 3" Inch Internal Wastegate Downpipe is designed to work with...

    $489.00
  • 3" Down Pipe with a 46mm Wastegate 3" Down Pipe with a 46mm Wastegate 3" Down Pipe with a 46mm Wastegate 3" Down Pipe with a 46mm Wastegate 3" Down Pipe with a 46mm Wastegate

    3" Down Pipe with a 46mm Wastegate

    This is a GN1Performance "3 INCH 46mm EXTERNAL WASTEGATE DOWN PIPE" for a 1986 or 1987 Buick Grand National, T Type, Turbo T, or GNX 3.8 liter turbo V6. This 3" Inch External Wastegate Down Pipe is constructed out of 304 stainless...

    $535.00
  • 3.5" Inch Exhaust Test Pipe 3.5" Inch Exhaust Test Pipe 3.5" Inch Exhaust Test Pipe 3.5" Inch Exhaust Test Pipe 3.5" Inch Exhaust Test Pipe

    3.5" Inch Exhaust Test Pipe

    This is a GN1Performance 3.5" Exhaust Test Pipe for a 1986 or 1987 Buick Grand National, T Type, Turbo T, or GNX 3.8 liter turbo V6. This item is constructed out of 304 Stainless Steel.This pipe is 13.25" in overall length.

    $95.00
  • 3.5" Inch Exhaust Cutout 3.5" Inch Exhaust Cutout 3.5" Inch Exhaust Cutout 3.5" Inch Exhaust Cutout

    3.5" Inch Exhaust Cutout

    This is an all new GN1Performance 3.5" Exhaust Cut Out for a 1986 or 1987 Buick Grand National, T Type, Turbo T, or GNX 3.8 liter turbo V6. This item is constructed out of 304 Stainless Steel.This pipe is 13.25" in overall length.

    $125.00
  • 3.5" Down pipe with V-Band flange 3.5" Down pipe with V-Band flange 3.5" Down pipe with V-Band flange 3.5" Down pipe with V-Band flange 3.5" Down pipe with V-Band flange

    3.5" Down pipe with V-Band flange

    This is a GN1Performance "3.5 INCH V-BAND DOWN PIPE" for a 1986 or 1987 Buick Grand National, T Type, Turbo T, or GNX 3.8 liter turbo V6. This is our all new 3.5" Inch V-Band Flange Downpipe constructed out of 304 stainless steel. All tig...

    $375.00
  • 3.5" Down pipe with Flat Flange 3.5" Down pipe with Flat Flange 3.5" Down pipe with Flat Flange 3.5" Down pipe with Flat Flange 3.5" Down pipe with Flat Flange

    3.5" Down pipe with Flat Flange

    This is a GN1Performance "3.5 INCH INCH FLAT FLANGE DOWN PIPE" for a 1986 or 1987 Buick Grand National, T Type, Turbo T, or GNX 3.8 literb turbo V6. This is our all new 3.5" Inch Flat Flange Downpipe constructed out of 304 stainless steel...

    $375.00
24 of 27 Items