APEXi® Metal Cylinder Head Gasket Set (814-F001) 1737 Here's why this downpipe is

Here's why this downpipe is a must-have for any enthusiast:

various methods for thermocouple installation

Retains factory style bushing collars which prevent the sway bar from walking or moving during hard cornering

The Active Autowerke BMW F-Chassis xDrive Chargepipe (15-005) addresses a common failure point on 2012 and newer N55 BMW xDrive models including X3

Integrated wiring harness featuring fail-safe functions

APEXi® Metal Cylinder Head Gasket Set (814-F001) 1737 Here's why this downpipe isMetal Cylinder Head Gasket Set (814 F001) by APEXi. The APEXi metal headgaskets provide upgraded protection on high horsepower engines. Factory headgaskets cannot withstand the pressures of high output operation and often cause the engine to "blow." This condition is actually caused by a failure in the factory headgasket. APEXi recommends replacing the factory headgasket with a metal one before gasket failure causes more damage to the engine. The