Spool Performance Darton Sleeved M177 Engine Block

$6,499.00

Brand: Spool Performance

Availability: In Stock

SKU: SP-ENG-M177-DSB

Qty:

Tags: C63 , C63s , Darton , E63 , e63s , GLC63 , GLC63 Biturbo , GLE63 , GLE63s , m177 , Mercedes , mercedes S63 , S63 , Sleeved Engine

Mercedes-AMG M177 Darton Sleeved Block

The factory Mercedes-AMG M177 aluminum block was never designed for the cylinder pressures seen in today’s high-boost, high-power applications. When pushing the limits of the platform, proper cylinder support becomes non-negotiable. Our M177 Darton Sleeving Machining Service transforms the stock block into a foundation capable of handling extreme horsepower reliably.

This service involves precision machining and installation of Darton ductile iron sleeves, providing vastly improved cylinder strength, distortion control, and long-term durability under high boost and elevated combustion loads.

Each block is CNC-machined, sleeved, and finish-honed to within ±0.0001", ensuring exceptional bore geometry, ring seal, and piston stability—critical for both high RPM and high cylinder pressure operation.

What’s Included

Precision machining of the M177 aluminum block

Professional installation of Darton sleeves

Final torque-plate honing to ±0.0001" tolerance

Ready for custom piston fitment and high-power assembly

Why Darton Sleeves?

Dramatically increased cylinder strength

Improved resistance to bore distortion

Superior ring seal under high boost

Essential for big-power and race-level M177 builds

Important Notes

This is a machining service only — no engine block is included