Spool Performance Darton Mid Sleeved M157 Engine Block - SP-ENG-M157-DSB

The Spool Performance Darton Mid Sleeved M157 Engine Block is the ultimate solution for addressing the notorious Mercedes M157 engine cylinder lining scoring issue. Designed for high-performance enthusiasts and professional racers, this sleeved engine block is capable of withstanding over 1500 horsepower, ensuring unmatched strength, durability, and performance.

Each block undergoes a precise blueprinting process using traceable certified Hexagon CMM machines to guarantee quality. A comprehensive report detailing all relevant dimensions and tolerances is provided with every engine block, ensuring confidence in the build.

Scope of Work:

• Machine and install Darton Mid Sleeves
• Bore and hone to a final tolerance of 0.0001" for optimal piston-to-bore clearance
• Machine deck surface to ensure flatness and proper surface finish
• Line hone crank bore
• Electro and vibration check for sleeve seating

Note: A block is required for purchase, or you can opt for a core exchange. The Core Exchange Fee is $7499.

This upgraded M157 engine block is the perfect solution for achieving incredible power output while addressing the inherent weaknesses of the stock block.

Note: 'New' merchandise may be returned for exchange or refund within 15 days from the date of shipment. 'New' merchandise must be unused and free from installation or mounting damage. Installation or modification of parts waives your right to returns, refunds, or exchanges.