Premium Engine Overhaul Rebuild Kits for Mitsubishi S3L / S3L2 Series

Restore the performance and compression of your compact equipment with a comprehensive overhaul rebuild kit for the Mitsubishi S3L and S3L2 engine series. These 1.3L, 3-cylinder diesel engines are the primary powerplants for several popular Caterpillar mini excavators, including the 302.5C, 303CR, and 303SR.

Engineered for heavy-duty construction environments, these kits include all the internal rotating components and seals required for a professional-grade restoration. Most kits feature precision-cast pistons and a full gasket set with a high-durability head gasket to ensure thermal stability and prevent fluid leaks. Using a verified rebuild kit maintains the tight tolerances needed for reliable operation in grading and trenching applications.