F30 / F31 / F34  340i xDrive

Requires "A" & "B" Looms for installation

In some cases

IP67/IP69K Waterproof rating – Guaranteed to be dust tight and sealed against water immersion to a depth of 1 meter for up to 1 hour

11128008118

BMW S63 Valve Spring Kit by Ferrea VI F30 / F31 / F34The Ferrea Valve Spring Kit for BMW S63 engines is engineered for superior durability and performance under extreme conditions. This kit replaces BMW part numbers 11340039494, 11340054492, 11347578825, 11347572451, 11347504271, 11347614134, and 11340150843. Factory valve springs can struggle to meet the demands of high boost, aggressive cam profiles, and sustained high RPM, leading to valve float and potential engine failure. Ferrea valve springs are