8PCS Engine Pistons Kit A2780302317 92.9mm Bore 24mm Pin Compatible with M278 4.6L 4.7L V8 Engines for X166 W166 W221 W222 GL500 S500 GLS500 E500 ML500

This engine piston kit includes 8 forged aluminum pistons designed for vehicles equipped with the M278 4.6L and 4.7L V8 engines from 2011 to 2019.The piston bore diameter is 92.9mm (3.66 inches) with a pin bore diameter of 24mm and a length of 56mm, precise fitment for compatible models with chassis codes X166, W166, W221, and W222.Ring groove dimensions are 1.2mm for the ring, 1.5mm for the second ring, and 2.0mm for the oil ring, supporting effective compression sealing and improved engine efficiency.These specifications help maintain consistent combustion performance and support reduced emissions.Each piston is manufactured to meet industry standards, providing proper clearance and within the engine block under various driving conditions, including city and highway use.This kit serves as a direct replacement for worn or damaged pistons in the specified engine platform.

• Engine pistons kit model A2780302317 designed for precise fitment in select vehicles with 4.6L and 4.7L V8 M278 engines.Compatible with multiple chassis including X166, W166, W221, and W222 for GL500, S500, GLS500, E500, and ML500 models.Piston bore diameter measures 92.9mm with a pin bore size of 24mm for accurate engine rebuilds and performance restoration.Set includes 8 pieces to support complete cylinder bank replacement, ideal for full engine overhauls and mileage repairs.Forged aluminum construction engineered to meet industry standards for performance under temperature and pressure conditions.