Balmar 48YSP4JHF AltMount Serpentine Pulley Conversion Kit for Yanmar 4JH Diesel Engines

The Balmar 48YSP4JHF is an AltMount® Serpentine Pulley Conversion Kit designed specifically for Yanmar marine diesel engines. This complete conversion system provides an easily installed solution to deliver greater load transfer while reducing engine noise and vibration in your marine application.

Compatible Yanmar Engine Models:

• 4JH
• 4JHE
• 4JHE-TE
• 4JHE-HTE
• 4JHE-DTE

Complete Kit Includes:

• Three Ten-Groove (J10) serpentine pulleys
• Two J10 47-inch circumference serpentine belts (includes one spare)
• All mounting hardware required for installation

The serpentine belt design improves power transfer efficiency compared to traditional V-belt systems while providing smoother, quieter operation. While installation is moderately straightforward, Balmar recommends carefully following the included installation instructions to ensure proper fitment and performance.

Important Note: If you are installing this kit with a Balmar AT-200A alternator, a longer belt length may be required. Contact Balmar Technical Support at +1 (360) 435-6100 x3 for assistance with alternator compatibility questions.