AltMount®Serpentine Pulley Conversion Kit for Westerbeke Diesel Engines

Westerbeke Engines Covered: 18, 21A, 27A, 35B, 38B, 42B

Kit Includes: Three Ten-Groove (J10) Pulleys, Two J10, 40″ Circumference Serpentine Belts (one spare) & Mounting Hardware

Note:  If you specify an AT-200A Alternator, a longer belt length may be required.  Call Balmar Technical Support @ +1 (360) 435-6100 x3

48-WSP-21A, 48-WSP-27A, 48-WSP-35B, 48-WSP-38B, 48-WSP-42B

Find the Right Balmar Charging System for your Engine

Not Ready to Configure? First Review Our Selecting a Charging System Guide.​