Pulley Kit, Yanmar 4JH4-HTE-TE-DTEThe AltMountA(R) Serpentine Pulley Conversion Kit provides an easily installed solution to provide greater load transfer and reduce engine noise and vibration. While the installation process for this kit is moderately simple, Balmar strongly recommends reading and following the installation instructions closely when installing the kit-this AltMountA(R) Serpentine Pulley Conversion Kit for Yanmar diesel engines.Yanmar Engines Covered: 4JH4-HTE-TE, -DTEKit Includes: Three Ten-Groove (J10) Pulleys Two J10 46" circumference serpentine belts (one spare) and mounting hardware Note: If users specify an AT-200A Alternator, a longer belt length may be required. Call Balmar Technical Support @ +1 (360) 435-6100 x3This product may not be returned to the original point of purchase. Please contact the manufacturer directly with any issues or concerns. Owner&';s Manual (pdf)