Smart-powered aFe Twisted Steel 11-21 Jeep Grand Cherokee (WK2) 5.7L V8 Headers

This system produced gains of up to +6 HP and +7 lbs. x Ft. TQ., as measured on our in-house dyno. This system is constructed of 1-5/8 IN mandrel-bent stainless steel tubing for maximum strength and durability. This coating combination reduces the outside surface temperature of headers and reduces engine compartment temperatures by as much as 46% vs. non-coated headers. A combination of Factory style laser cut and machined flanges are used for a secure leak-free seal. Utilizing factory style flanges this system is designed to fit in the stock locations with no cutting or modifications required for a hassle-free installation. Utilizing state-of-the-art computer-aided design technology, this system is designed for custom, high tolerance factory fitment. 100% MIG-Welded for race-proven strength and durability.
Installation Instructions