Unleash the hidden horsepower, torque and throttle response that's simmering under your hood. JBA Headers are mandrel-bent for maximum flow and smog-legal in all 50 states. Firecone collector for greater output. Dyno proven 10-25hp gains. 1-year warranty.
Dollar for dollar, few performance upgrades can match a set of Doug Thorley Headers. Tuned for power and smog compliance, Thorley exhaust headers come in Tri-Y, shorty and long tube header designs. Mild steel with a ceramic or nickel coating. Plus, Thorley exhaust headers carry a Lifetime Warranty.
Quality off-road long-tube headers at an affordable price—impossible? Not any more—go for PaceSetter’s Quik-Trip Long Tube Headers. These bad boys deliver roaring horsepower and torque, they seal tight, are made in the USA and carry a 3-year warranty.
Go hog wild for horsepower by bolting on a handmade set of Kooks Street Headers. Expertly engineered to unleash insane amounts of power, these custom exhaust headers are constructed from premium steel with a 3/8” flange and hand-ground ports. Lifetime Warranty.
Not sure which 2008 Pontiac G8 Exhaust Headers & Manifolds are right for you? We have over 918 customer reviews, with an average rating of 4.5, to help you find exactly what you're looking for. Here's what some of our customers have said:
"had ordered # 1811s and was shipped # 1812s that fits a 2010 camaro v8. was advised to call jba tech line. after calling there tech line, i was informed that the # 1812s would work perfectly on my 2008 g8 gt. the difference in the # 1812s is an easier installation due to more clearance around the steering shaft. otherwise its a good looking header. also i have not yet been able to install yet." —Robert S from Mason City, IA bought a JBA Cat4ward Headers for a 2008 Pontiac G8, GT, 6.0L V8.
"Very nice headers, especially for the price! AutoAnything has fast shipping. Doug Thorley are comparable to more expensive headers from ARH and Kooks. Excellent mid range torque gains. Gained 30whp/wtq on the dyno, my car dynoed higher then cars with Kooks and similar mods. You will need to dyno tune your vehicle to the headers to take full advantage of the power they can produce. A hand held tuner or canned tune won't cut it." —Zachary W from Herndon, VA bought a Doug Thorley Headers for a 2008 Pontiac G8, GT, 6.0L V8.