APWPART FINDER
My Vehicle Add New
  • Select Year
  • Select Make
  • Select Model
  • Select Submodel
  • Select Engine

Shop by Brand

GMC S15 Headers

We have 3 Items In-stock. Select a year to continue.
$221.04 List Price $532.86 Save $311.82 Availability: In Stock
  • Free Ground Shipping
  • Low Price Guarantee
(

more

)

HEDMAN – PAINTED HEADERS

Is that power-robbing stock manifold still on your vehicle? If you answered yes, then replace it with a Hedman Painted Header to lower your operating temps and release extra horsepower and torque from your engine. These headers are designed for painting, so order a can of header paint in the color that best suits your vehicle. Hedman Headers have always been made in the USA since the company was founded over 50 years ago. Bob Hedman started out making headers as a one man shop but word spread fast about the horsepower and torque that Hedman headers were producing. His headers have been in demand by top engine builders and racers since the start. Hedman’s time perfecting headers on the track and on the dyno ensures you will get optimum performance with every Hedman Header whether it is installed on your race car or daily driver.

  • Perfect for hot rod builds on a tight budget
  • Proudly manufactured in U.S.A.
  • Tubing size is 16 to 18 gauge depending on model
  • Size of flanges are 5/16 inch
  • These headers are designed to be painted, so pick up a can of header paint in a color of your choice

NOTE: Not legal for use or sale in California on vehicles that came equipped with emission controls from the factory.

  • SKU#: H5669410
  • Brand: Hedman
  • Fit Note: 4WD
  • Color/Finish: Black
  • Emissions: 49-State Legal - no CA shipments
  • Product Fit: Direct Fit
  • Quantity Sold: Kit
  • Anticipated Ship Out Time: 1-2 Business Days
(see more)
Fits the following GMC S15 Years:
  • 1988-1990 | 6 Cyl 4.3L | Base, High Sierra, Sierra Classic
  • 1988 | 6 Cyl 4.3L | Gypsy
Rating: (see review/s)

"the product turned out great. sounds amazing and i enjoyed the mild power gains all the way through the rpm range. the installation was rediculous though. it took my three weeks to install, which is while going to work and school full time. i had to remove my whole front assembly minuts wp and ac. cut my ps bracket. pound my firewall in notch my frame lift my engine out a bit and alot more. these were honestly the hardest headers to install and i have installed a few. the took alot of fabing aswell. alot of work but now they are done and im glad i did it now. i would recommend these to someone with alot of time and patience. i also have 40 series flow masters, rpm air gap intake and a k&n filter ao im not sure how they sound by themselves on a truck but good luck to whoever installs these headers ur going to need it lol" posted by: Trevor on June 24, 2010

$193.96 List Price $228.87 Save $34.91 Availability: In Stock
  • Free Ground Shipping
  • Low Price Guarantee
(

more

)
FLOWTECH I STANDARD FULL-LENGTH HEADERS, STEEL, BLACK, SET OF 2 -- For off road use - Not legal for use on public roads and highways; 1.5 in. tube diameter, 16-gauge tube wall thickness, 2.5 in. weld-on collector, standard head flange; All mounting hardware such as bolts, nuts, and premium gasket are included; 4-1 design; Round head port; These headers are precision-engineered and leak-tested to provide the maximum performance and fuel efficiency of your engine; Formed from specially selected 0.049 cold roll flash controlled tubing with high quality electrostatically-applied satin black paint finish; They feature Flowtech's exclusive, thick, and mandrel-formed power plenum collector; All ports are precisely fitted and finished with sturdy and leaf-proof o-ringed port seals; Must modify stock exhaust to retain catalytic converter; Application with oxygen sensor use reducer part number 10105; Heap pipe lubrication required; Will not fit angle plug heads; Requires Flowtech front frame mount for installation.
  • SKU#: F3111502
  • Brand: Flowtech
  • Fit Note: RWD, Without A.I.R. Tubes, For Engine 283-400 Swap, RWD, Without A.I.R. Tubes, Required A/C Bracket PN[10042FLT], RWD
  • Emissions: 49-State Legal - no CA shipments
  • Product Fit: Minor Modifications
  • Quantity Sold: Kit
  • Anticipated Ship Out Time: 1-2 Business Days
 
Fits the following GMC S15 Years:
  • 1988-1990 | 6 Cyl 4.3L | Base, High Sierra, Sierra Classic
  • 1985-1990 | 4 Cyl 2.5L | Base, High Sierra, Sierra Classic
(see more)
$218.81 List Price $527.14 Save $308.33 Availability: In Stock
  • Free Ground Shipping
  • Low Price Guarantee
(

more

)

HEDMAN – PAINTED HEADERS

Is that power-robbing stock manifold still on your vehicle? If you answered yes, then replace it with a Hedman Painted Header to lower your operating temps and release extra horsepower and torque from your engine. These headers are designed for painting, so order a can of header paint in the color that best suits your vehicle. Hedman Headers have always been made in the USA since the company was founded over 50 years ago. Bob Hedman started out making headers as a one man shop but word spread fast about the horsepower and torque that Hedman headers were producing. His headers have been in demand by top engine builders and racers since the start. Hedman’s time perfecting headers on the track and on the dyno ensures you will get optimum performance with every Hedman Header whether it is installed on your race car or daily driver.

  • Perfect for hot rod builds on a tight budget
  • Proudly manufactured in U.S.A.
  • Tubing size is 16 to 18 gauge depending on model
  • Size of flanges are 5/16 inch
  • These headers are designed to be painted, so pick up a can of header paint in a color of your choice

NOTE: Not legal for use or sale in California on vehicles that came equipped with emission controls from the factory.

  • SKU#: H5669400
  • Brand: Hedman
  • Fit Note: RWD, For Hydraulic Clutch Only
  • Color/Finish: Black
  • Emissions: 49-State Legal - no CA shipments
  • Product Fit: Direct Fit
  • Quantity Sold: Kit
  • Anticipated Ship Out Time: 1-2 Business Days
(see more)
Fits the following GMC S15 Years:
  • 1988-1990 | 6 Cyl 4.3L | Base, High Sierra, Sierra Classic
  • 1988 | 6 Cyl 4.3L | Gypsy
Select more GMC S15 parts under Headers, Manifolds & Components from list below.