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 Cottons Performance Center
 105 Walnut St.
 Agawam, MA 01001
 Ph:  (413) 789-0531
 Fx:  (413) 789-0401
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Home » MAIN PARTS LISTING -- CLICK HERE » Exhaust Systems, Downpipes & Related Parts

Downpipe Flange
Product ID: 20248


GN Turbo Discharge Flange

 Available in stainless and mild steel

Price: $0.00

Copper Turbo Gasket
Product ID: 4172
Copper Turbo Gasket
3 bolt copper turbo base gasket from SCE. RTV High Heat Silicone recommended during install for a seal that will last.
Price: $14.95

Downpipe Gasket, internal wastegate
Product ID: 4772


NEW copper downpipe gasket for INTERNAL wastegate downpipes only. RTV high-heat silicone recommended for install
Price: $18.95

Header Stud Kit
Product ID: ARP020-1402


ARP 12pt Header Studs. Comes in a set of 12 studs with washers, and your choice of black oxide steel or stainless

Price: $69.99

Downpipe, 2.5" external wastegate
Product ID: DPWEG25



 Fits: Turbonetics Delta & Evo, Precision 39mm, Tial 38mm.

Price: $95.00

BMS Header Flanges
Product ID: ENG178


Set of Cotton's stainless steel header flanges specific to the Buick Motorsports Heads
Price: $195.00
Out of Stock

Turbo Mounting Set
Product ID: ES72697


FELPRO Turbo Mounting Set includes:

  • 1 Turbo Inlet Bell Gasket
  • 1 Downpipe Elbow Exhaust Donut
  • 1 Oil-Drain Gasket
  • 1 Retainer Adapter Connector Seal
  • 2 Oil Cooler Adapter to oil pump cover Seals
Price: $26.99

2.5" Dual Exhaust System
Product ID: EX100SS


Dual cat-back exhaust system by Pype's Performance. Comes with 2.5" mandrel bent (un-polished) stainless steel tubing, Pype's "Race Pro" straight-through stainless steel mufflers, and all necesary hardware for quick and easy installation.

Price: $499.95

O2 Bung Plug
Product ID: ex101
O2 Bung Plug
This stainless steel plug installs into O2 sensor bung when the sensor is not needed
List Price: $10.00
Price: $10.00

O2 Bung
Product ID: EX102
O2 Bung
18mm X 1.5 stainless steel weld-in bung for adding oxygen sensors to your exhaust
List Price: $10.00
Price: $10.00

Header Gasket Set, copper
Product ID: EXC1


Copper header gaskets, great sealing power and will not blow out like asbestos aftermarket ones will. RTV High Heat Silicone recommended during install for a seal that will last.

Always use when installing any header to aluminum heads


Price: $48.00

Header Gasket Set
Product ID: EXC2


Set of Felpro graphite header gaskets

We reccomend using copper gaskets when installing any header to aluminum heads

Price: $38.00

Product ID: EX-CAT
Catalytic Convertor
High-flow Magnaflow 3" catalytic convertor. Call with length needed, we custom build to spec..
List Price: $199.00
Price: $199.00

Downpipe, 3" internal wastegate
Product ID: TA_V2008A


3” Stainless Steel Downpipe straight from TA Performance for those wanting better flow with their stock style internal wastgate set-up. Incudes “Y” test-pipe, hardware and gasket.
Also available in 3.5" SS ...... Call for more options available, with or without Y-pipe, with or without test pipe
Price: $630.00

Turbo V6 Headers, Stock Replacement
Product ID: TA_V2009


 These new Stainless Steel Stock Replacement 231 Turbo V6 headers will retain the same high tech features and manufacturing methods used in our highly successful performance headers, the best fitting and most powerful Turbo V6 headers ever produced and sold.

All fabrication and materials will be 100% USA, nothing imported. The turbo flange will also be the same precision cut 3/8" thick piece currently on TA performance V6 headers with elongated hole for precise turbo/downpipe alignment. These headers should fit all downpipes that fit with stock headers.

The stock drivers side header is notorious for cracking at the collector, requiring it to be welded or replaced. Since our driver's side header will be a direct stock replacement, it is available to purchase just a replacement header for the driver's side. In addition, being that a stock type crossover pipe will be utilized, they are available as a single purchase part also.

These headers feature a 1.5” primary header tube diameter and a 2.25” crossover tube diameter.

Price: $843.00

Stainless Steel Turbo V6 Headers
Product ID: TA_V2010CH-SS


Make this the last set of headers you will ever have to buy for your `86 or `87 Grand National, GNX, T-Type and Turbo Regal. This all new design incorporates our new flanges that allow the use of 8 or 14 bolt heads, clearance for starters,as well as 3 or 3.5 inch downpipes. Our exclusive double wall slip fit crossover and thick 1/2” flanges provide for a leak free installation. Header kits come with all gaskets and mounting hardware.

Optional 4 bolt headers are also available from the dropdown menu below

Note: Headers do NOT fit stock downpipes.

Price: $1,265.00

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Jack Cotton's 8.90 @ 154MPH 1986 Buick