Factory-style metal boot covers with double O-ring seals

these rods offer great value for performance enthusiasts who want durability without overspending

you can securely tune up the boost on your BMW S68 engine without worrying about the cylinder heads lifting

this kit is designed to handle high RPMs and high-horsepower builds

Replacement of wear items and seals

B46 Block Sleeving Service 7551 Factory-style metal boot covers withB46 Engine Block Sleeving Service When it comes to unlocking real performance and long term durability from your BMW B48, the factory spray on iron cylinder coating simply isnt up to the task. Our precision sleeving service replaces those limitations with a robust, high strength solutionturning your engine block into a foundation built for serious power. Why Sleeve Your B46 Block? The OEM coating was never designed for high boost or high horsepower