8-Piece Piston Rings Kit with Pins for 4.4L V8 Twin Turbo Engine Φ89mm Compatible with S63B44A S63B44TU Engines for Select Models

This 8-piece piston rings kit with pins is designed for 4.4L V8 twin turbo engines with S63B44A and S63B44TU specifications.Each assembly includes pistons, rings, and pins engineered for a cylinder bore diameter of Φ89mm.The piston rings feature thicknesses of 1.5mm (first and second rings) and 2.0mm (third ring).Piston pin dimensions are Φ22mm in diameter and 64mm in length.This kit is compatible with OE part numbers 11257598207, 11257556955, 11257574822, 11257593475, 11257574823, 11258607933, 11258092931, and 11258747752.The pistons are constructed from forged aluminum to support under standard operating conditions.Intended for standard specification installations without cylinder modification.Package includes 8 complete piston assemblies with rings and pins.

• Compatible with select models equipped with S63B44A and S63B44TU 4.4L V8 twin turbo engines
• Piston rings kit with a bore diameter of Φ89mm designed for accurate fitment
• Direct replacement for OE part numbers 11257598207, 11257556955, and 11257574822
• Includes 8 piston assemblies with rings and pins for complete V8 engine service
• Forged aluminum construction helps maintain compression and reduce oil consumption under normal operating conditions