--- product_id: 98577616 title: "Gibson GP129S-C Ceramic Coated Performance Header" brand: "gibson performance exhaust" price: "£1275.69" currency: GBP in_stock: true reviews_count: 15 url: https://www.desertcart.co.uk/products/98577616-gibson-gp129s-c-ceramic-coated-performance-header store_origin: GB region: United Kingdom --- # Gibson GP129S-C Ceramic Coated Performance Header **Brand:** gibson performance exhaust **Price:** £1275.69 **Availability:** ✅ In Stock ## Quick Answers - **What is this?** Gibson GP129S-C Ceramic Coated Performance Header by gibson performance exhaust - **How much does it cost?** £1275.69 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.co.uk](https://www.desertcart.co.uk/products/98577616-gibson-gp129s-c-ceramic-coated-performance-header) ## Best For - gibson performance exhaust enthusiasts ## Why This Product - Trusted gibson performance exhaust brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Description Every Gibson Header is Dyno-tuned and engineered to deliver more usable horsepower and torque at low and mid-range RPM highway speeds. Improves engine’s ability to breathe and cooler operating engine temperature. Designed as a direct replacement for the factory manifolds, using the stock crossover pipe. They are well suited for lowered and raised vehicles, street and off-road. 50 State Street legal. Meets EPA and CARB requirements. Will not affect the factory warranty. ## Features - 1 5/8 in. Tubing; w/o Air Injection; w/o EGR Incl. Flanges/Gaskets - Direct Fit bolt-on Replacement, No Welding Required, Uses OEM Style Connections - Heavy Duty Laser Cut Port Flanges-No Warping or Leaking Premium Gaskets and Hardware - Will Not Affect the Factory Warranty. Meets EPA and Carb Requirements - ›See more product details ## Images ![Gibson GP129S-C Ceramic Coated Performance Header - Image 1](https://images-na.ssl-images-amazon.com/images/I/61QHN5sOSUL.jpg) ![Gibson GP129S-C Ceramic Coated Performance Header - Image 2](https://images-na.ssl-images-amazon.com/images/I/61QHN5sOSUL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Chevy Avalanche 5.3L 2010 *by D***H on Reviewed in Canada on 11 January 2016* Small HP Gains between 3000-5600 RPM. Look great in the truck and add a low rumble/throaty exhaust note. Little pricey but sounds great. ### ⭐⭐ Wouldn't do these again. *by M***L on Reviewed in the United States on 18 July 2019* I'm an ASE Master Tech and have done lots of work on countless vehicles over the years, but I'd never really strayed far from factory parts, and the issues I've had with these headers is reminding me why I prefer factory.First off, the headers look fantastic. I installed them on my 2011 GMC Sierra with the 5.3 LS V8 while doing an AFM delete (I figured since the manifolds were coming off anyway, might as well throw these on as I had been eyeing them for awhile.)When the headers first arrived, I was unimpressed with the gasket surfaces (where the headers meet the cylinder head.) They were very rough and poorly machined. I had little confidence in their ability to properly seal. I had a machinist friend of mine mill the gasket surfaces perfectly flat and figured I'd be good.The headers seal nicely against the cylinder heads (probably thanks to my friends' machine work,) but for the life of me I CANNOT get the flanges (which attach to the y-pipe) to properly seal. They just BARELY leak under moderate acceleration but it's SUPER ANNOYING. The flanges are surrounded by rounded out areas of the firewall and the small "ticks" they emit echo like crazy, making it sound louder than it really is.I have tried again and again to get this to seal up with different gaskets, etc. I even considered welding in a flex pipe in the center of the y-pipe to try to take some tension off the flanges, but ultimately decided against it. Now, after so many times on and off with each attempt at repair, the passenger side ring flange is beginning to warp, making the leak worse.For now I'm living with it, as I've run out of time to mess with these things. But next year, I'll probably be taking these off and reinstalling the stock manifolds. I just can't stand the leaks.I will also say that I did actually notice an improvement in low end torque. The truck no longer has to downshift as often when passing or climbing hills. The intake sound also decreased, leading me to believe the engine is in fact breathing better with these on. However, the noise from the leaky flanges just negates these positives for me. Not very happy, wouldn't do this again. ### ⭐⭐⭐⭐⭐ Good header *by W***G on Reviewed in the United States on 6 February 2014* This is the Header I have been looking for my 2005 Tahoe for some times, due to the price I want to paid, it worth the wait, this header fits well, I am not a Gibson"s fan, but the quality I see on this headers are very well done. The instruction on removing the driver side exhaust manifold is just a general description. As the beginning of the instruction stated ( general mechanic's knowledge, and a reasonable degree of experience is required ) . On my Z71 model, the exhaust manifold has to come out from the top, due to the transfer case drive shaft is in its way. After installed the header, it match the angel of the stock exhaust very well, if you do it right. I install this header after the CAI was installed, I get 1.5 mpg better than before, on top of the 1 mpg from the CAI, I think it well worth all the work I have done to the replacement. --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.co.uk/products/98577616-gibson-gp129s-c-ceramic-coated-performance-header](https://www.desertcart.co.uk/products/98577616-gibson-gp129s-c-ceramic-coated-performance-header) --- *Product available on Desertcart United Kingdom* *Store origin: GB* *Last updated: 2026-05-17*