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The symptoms of a worn DISA valve include rough idle
The DISA valve is a common failure on the M54 and M56(ULEV) BMW engines and is caused by the poor materials used in the manufacturing process
Send us your Porsche cam phasers for a professional rebuild using our upgraded Teflon seals and Viton O-rings
All necessary O-rings for the 4 pressure valves
S85 Vanos Pump Sprocket s85 The symptoms of a wornWe've seen that the chain sprockets on these pumps will show excessive wear over time, even if the pump itself is working normally. We recommend replacing the sprocket if it shows any signs of wear. All of our rebuilt S85 oil pumps come with a new chain sprocket, so there is no need to purchase this part separately if you are buying one of our updated vanos oil pumps.