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GibsonGP129S Performance Headers - Natural, Stainless Steel, 4-1, 50-State Legal, Direct Fit

Part #: G27GP129S | Mfr #: GP129S

In Stock
Ships out in Same day - 1 business day
  • APW Bestseller
  • Low Price Guarantee

5 5 out of 5 stars
(3 customer reviews)


List Price: $878.58

Save: $491.41



  • Series: Gibson Performance
  • Material: Stainless Steel
  • Design: 4-1
  • Color/Finish: Natural
  • Emissions: 50-State Legal
  • Product Fit: Direct Fit
  • Quantity Sold: Kit
  • Anticipated Ship Out Time: Same day - 1 business day
  • Bolts/ Studs Included: Yes
  • Collector Attachment Style: OE Style Flange
  • Collector Diameter: Stock
  • Equal Length Primary Tubes: No
  • Gaskets Included: Premium Carbon Composite Gasket
  • Head Flange Style: Stock
  • Head Flange Thickness: 3/8 in.
  • Header Style: Shorty Tuned
  • Includes: Premium gasket, installation hardware
  • Number of Cylinders: 8
  • Port Shape: Round
  • Primary Tube Diameter: 1.5 in.
  • Primary Tube Thickness: 16 Gauge
  • Primary Tube Wall Thickness: 16-Gauge
  • Warranty: Lifetime Gibson limited warranty

Product reviews

headers by motorhead, January 13, 2015

Ease of Use/Installation:
Overall Rating:

These were used as direct replacement for stock exhaust manifold replacement sound is just a little deeper but nothing crazy

Awesome H2 upgrade by Mathias, February 15, 2010

Ease of Use/Installation:
Overall Rating:

I got these headers with a predator stage 3 kit,,it has changed the whole tone and throttle on my H2 SUT. no doubt there's increases bottom, top, mid..the sound is really cool as well..LS growl..i recommend for sure..

Silverado 4.8l by chevyguy575, February 15, 2009

Ease of Use/Installation:
Overall Rating:

Im pretty mechaniclly inclined and installed them in about 4 hours. looks great sound good noticed most increase in the mid to top end. But got rear-ended and went head on into a tree before i had to re-torque them...thw front end is destroyed but the headers are still good haha