Overhaul Kit For 4HL1 1 Overhaul Kit 4 Cylinder Liners 4 Pistons 4 Bushings 4 Piston Pins 8 Retaining Rings 4 Piston Rings This overhaul kit is designed for the 4HL1 engine model and includes all necessary components for a complete engine rebuild.The set contains one overhaul kit, four cylinder liners, four pistons, four bushings, four piston pins, eight retaining rings, and four piston rings.Each part is engineered to meet specifications for proper fit and function.This comprehensive kit provides the essential elements needed to restore engine performance and.