AFE: Twisted Steel Headers & Y-Pipe (Street Series) GM Silverado/Sierra 1500 14-19 V8-5.3L 11mm 0L Gas 2015-2018 BMW X4

0L Gas 2015-2018 BMW X4 35ix (F26) Turbo (N55) L6 3

*Excludes 2006 extended cab models with 5'8" Short Bed

Model: 4239016M (Black/Manual)

The D-1X upgrade is also available on this application

Model: 1139014A (Natural/Auto)

AFE: Twisted Steel Headers & Y-Pipe (Street Series) GM Silverado/Sierra 1500 14-19 V8-5.3L 11mm 0L Gas 2015-2018 BMW X4Dual High Flow Catalytic Converters: Semi metallic 400 CPSI catalytic converters are used for maximum flow. True Merge Collectors: Eliminates dead space that can cause turbulence and hinder flow that formed collectors are prone to produce. Leak Free Seal: High quality OE style flanges and band clamps are used for a complete 360 degree sealing surface. Hassle Free Installation: The performance header and y pipe are designed to fit in the stock location