Maximum PSI heavy duty forged piston set for S55 engines. Made by Mahle to our specifications. This is not their shelf PowerPack S55 piston part #197879807.
HD pins, Grafal coated skirts. Set up to drop in to the factory LDS bore. Rings are file fit. Please email email@example.com for any questions prior to purchasing, especially if you have a damaged S55 engine.