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XA8MXGST12A010
2005 - 2010 BMW E60/E61 M5
deliver increased spring pressure
Direct replacement for the S58 engine
Viton Valve Stem Seals, BMW B48 8285 XA8MXGST12A010Viton Stem Seals for High Performance BMW B48 Engines Viton Stem Seals are engineered to prevent oil from entering the combustion chamber, ensuring optimal engine performance. Crafted from premium Viton material, these seals offer superior control and durability across the entire RPM range. Their compact design allows for clearance in small inside diameter valve springs. Developed to withstand the extreme conditions of high horsepower and turbocharged
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