Replacing your factory exhaust manifolds with exhaust headers, will increase the efficiency of your engine therefore increasing horsepower. This is achieved by building headers with individual, large radius bent, exhaust tubes from each exhaust port to accelerate the flow of the exhaust gasses from your engine. This will increase the efficiency of your motor giving increased horsepower and gas mileage. Headers are also a great alternative to using the expensive factory manifolds on the Frontier being that the factory manifolds are prone to cracking & leaking.
OFF-ROAD USE ONLYFits: 3.3L V6 Nissan Frontier (D22) 1998, 1999, 2000, 2001, 2002, 2003, 2004Note: Some vehicle models will require replacing the upper manifold studs to match the length of the lower ..