8X Pistons & Rings Set 11257598207 For BMW M5 M6 X5 X6 M E70 F10 F12 S63B44 4.4T
The pistons for the BMW S63B44 4.4L twin-turbocharged engine are aluminum (ZL109) components with a diameter of 89 mm.
Description
Piston diameter: 89.0 mm
Compression height: 32.1 mm
Piston offset: 0.8 mm
Piston pin diameter: 22 mm, length: 64 mm
Piston ring groove heights: 1.5 mm / 1.5 mm / 2.0 mm
Retaining ring groove depth: 1.5 mm
Valve recess (intake/exhaust): 36 mm / 34 mm
Combustion chamber volume: 13.97 cc
Compression ratio: 10:1
