Pulley Kit for Yanmar 4JH3-TE, 4JH3-HTEAltMountSerpentine Pulley Conversion Kit for Yanmar Diesel EnginesYanmar Engines Covered: 4JH3, -TE, -THEKit Includes: Three Ten-Groove (J10) Pulleys, Two J10, 48 Circumference Serpentine Belts (one spare) & Mounting HardwareNote: If you specify an AT-200A Alternator, a longer belt length may be required.This product may not be returned to the original point of purchase. Please contact the manufacturer directly with any issues or concerns.