Piston Assembly 11257506222 for BMW M54B30 Engine
The Standard (STD) piston kit for the BMW M54B30 engine features a nominal bore of 84.00 mm, a stroke of 89.60 mm, and a piston pin diameter of 22 mm. Common aftermarket forged piston kits typically feature a compression height ranging from 28.30 to 30.32 mm and a dish volume of -7.3 cc.
Description
Bore: 84.00 mm (Standard)
Stroke: 89.60 mm
Compression Height: 30.32 mm (28.30 mm for select models)
Piston Pin Diameter: 22 mm
Dome Volume: -7.3 cm³ (Dish Top)
Material: ZL109 Aluminum Alloy
Piston Ring Kit: Includes piston rings, circlips, and piston pin
Features: Typically includes ArmorGlide piston skirt coating and utilizes either a full-round or slipper-skirt design.
















