Precision Tuning Required for Maximum Results

No Welding Needed

This kit comes with 14x 11mm Studs

Poor Fuel Economy: Since the VANOS system helps optimize fuel efficiency by adjusting camshaft timing

More bore and thickness variations available here

5150 AutoSport Crank Seal Guard, BMW N54/N55/S55 BMIVN-1063S-16 Precision Tuning Required for MaximumOn the BMW N54, N55, and S55 engines, the accessory belt is situated in an area where coolant and oil leaks are common. When the accessory belt is affected by even a mild leak, it can begin moving off of the crank pulley, causing the belt to fray. The tiny shards of rubber created by a fraying belt then work themselves into the crank seal, where they are picked up by the timing chain and begin to cause detrimental problems. A simple, cost effective