TR Custom Parts
141 Ezra St
North Haven, CT 06473
We do all correspondence by email!

mhueffman@snet.net 

GENERAL INFO
Home Page
Ordering/Shipping/Returns
Comments
Customers' Cars

OLDS PRODUCTS
G-Body Oldsmobile

BUICK PRODUCTS
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AC RELATED PRODUCTS
AC Cowl Panel
AC Delete Plates

BODY RELATED 
Air Dams-One Piece
Headlight Covers
Hoodskinz

COLD AIR/MAF PIPES
Cold Air Kits
MAF/INLET Pipes
4" One Piece Air Inlet Kit
Up Pipes

FLUID / COOLING
Billet Fuel Rails
Billet Oil Filters
Dual Fan Kits
Power Steering Reservoir Kit
Radiator-Aluminum/Custom
Radiator Caps

Radiator Pipe Kits
RMI-25 Coolant Additive

EXHAUST PRODUCTS
3" Dual Exhaust- Stainless
4" Single Exhaust-Stainless
3" Internal Gate Downpipes
3" External Gate Downpipes
3.5" Downpipes
KB Style Headers

RemFlex Gaskets

EXTERIOR ITEMS
Door Handle Inserts
Lic Plates/ Frames

LED Lights
Wheelcap Overlays Custom

INTERCOOLERS / ETC.
Billet Vacuum Block

Intercoolers -Stock Location
Intercoolers -Front Mount
Intercooler Hoses/Clamps
Intercooler Plates
Intercooler Tags
Throttle Body/Plenum Combo

INTERIOR ITEMS
3rd Brake Overlays
Boost Controller Overlay

Console Door Overlays
Console Gear Indicator Plate
Console Overlays
Console Risers
Dashboard Kits

Door Trim Bar Inserts
Door Sill Plate Emblems
Gauge Panels
Gauge Pods
Glovebox 2 Step Mount

Glovebox Plate Overlay Stock
Glovebox Plates
Horn Buttons/Overlays
Pullstrap Screw Covers
Radio Delete Plates
Rear Seat Side Panels

Scan Master Shade Hoods
Seat Bracket Kits
Seat Hinge Overlays
Speedo Panel Kits
Switch Panels

MISCELLANEOUS
Alcohol Injection Kits
Bad Ass Fender Covers
Connecting Rods
Crankshafts ONLY
Flexplates
Fuel Pumps
Fuel Pressure Gauge Kits
Fuel Pressure Hood Bracket
Get Back Seat Brackets
Main Caps/Bearings/Stud Kits

Stock Crank Kits
Stroker Crank Kits
TR-6 Ignition Plate

Trunk Firewall Kit
Valve Cover Gaskets

MOTOR DRESS-UP
Aluminum Pulleys
Battery Cover
Coil Plates-Custom Engraved
Hot Air Intake Emblem
MAF Sensor PLATE
Plenum Spacer
Radiator Hold Down Plate

Translator Lid Overlay

Valve Covers

SUSPENSION / MOUNTS
Crossmember Mounts
Driveshaft Loop
Suspension G-Body
Rear Coilover Kits
Rear Coilover Bracket Kit
Rear Shock Tower Brace Kit
QA1 Regular Shocks
QA1 Coil Over Shocks

Motor Mounts
Rearend Cover
Rear Frame Notching Kit
Transmission Mounts

TURBO RELATED
Hot Air Turbo Heat Shield
Turbo Oil Drain Kit
Turbo Protector
Turbo Shields

This item requires a SIGNATURE upon delivery
Additional shipping charges may apply to Hawaii and Alaska orders

Effective IMMEDIATELY.  Any orders with heavy or bulky items being sent to Hawaii, Alaska may be assessed extra charges for shipping.  If unsure, email us first before ordering.  Thanks.

$495.00

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 your factory turbo and factory wastegate actuator! This Product is constructed out of 304 stainless steel and is all tig welded, built to clear stock and aftermarket headers like the SE Headers we sell.  
Will NOT work with headers that have the crossover that comes up into the motor compartment like the KB style we sell.

Installation is simple, remove your original 2.5" Downpipe and remove the cast iron elbow on the exhaust side of the turbo. Leave the actuator on the turbo and bolt the new pipe on!

A new test pipe or cutout will be necessary to adapt the new Downpipe to your exhaust.

Made in the USA!

CLICK ON PICS BELOW TO SEE FULL SIZE

 

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Stainless Steel 3" INTERNAL WASTEGATE Downpipes. 
 
Quantity

SELECT YOUR DOWNPIPE FROM THE DROP DOWN MENU
   
  

DUMP  PIPES ARE AVAILABLE SEPARATELY 
IF YOU ALREADY HAVE A 3" DOWNPIPE 
They measure approximately 13" overall length

 


WE ALSO HAVE TEST PIPES!

3TestPipe-1.jpg (17258 bytes) 3TestPipe-2.jpg (18401 bytes) 3TestPipe-3.jpg (18571 bytes)

 

3" Dump/Test Pipes  


Quantity

SELECT YOUR DUMP or TEST  PIPE 
FROM THE DROP DOWN MENU

 
  

 

Acceptance Mark

Credit Cards accepted thru Paypal 
No need to have a Paypal account.
Click here to see how!

TR Custom Parts
141 Ezra St
North Haven CT 06473
We do all correspondence by email!
mhueffman@snet.net
or
trcustomparts@gmail.com

Site updated - 9/14/2017

WE ACCEPT PAYPAL, CREDIT CARDS THRU PAYPAL AND MONEY ORDERS FOR PAYMENT

Want to pay with your Credit Card?
You can use your Credit Card thru the Paypal site without having a Paypal account!
Just select the Paypal option for paying and you will see DON"T HAVE A PAYPAL ACCOUNT? Pay with your debit or credit card, or with Bill Me Later«
Just click on this link and you then enter your credit card information.
Safe & Secure, we never see your Credit Card information.

Click here to see how!

EFFECTIVE IMMEDIATELY!  ORDERS WILL ONLY BE SHIPPED TO BILLING ADDRESSES 
NO EXCEPTIONS!  
YOUR ADDRESS MUST ALSO BE PAYPAL VERIFIED!

DUE TO COMPLAINTS ABOUT THE HIGH COST OF SHIPPING TO CANADA WE WILL NO LONGER BE SHIPPING THERE!  SORRY

This is a part time business venture. Due to very limited time we prefer to do all business by email. Our phone number is NOT listed on the site. All emails about ordering and questions about our custom parts will be answered on a timely basis. Be sure to read our ordering/shipping page for details about how things work around here!

ęCopyright 2017 TR Custom Parts