Mercedes Benz Camshaft Adjuster 2012 2013 2760501347 HB199G.702 B12 (Pro Kit) Series: Combines high performance 981 505 713 80 B12 (Pro Kit) Series: Combines high performance dampers with Eibach Pro Kit lowering springs for a complete suspension upgrade Features and Benefits:Reduces the oil blow by from the crank ventilationKeeps the oil in the engine while still allowing good crank ventilationVery simple mounting sandwiches between the crankcase and ventilation the lid breather coverUsed on all Hastech race & street enginesRecommended for all aircooled Porsche 911 engines to help reduce oil consumption caused by ingestion of oil laden air into the intake caused by excess crankcase windage and blow by Camshaft Adjuster for E400 (2013) SLK350 (2012 2013)