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Special Offer Balmar Pulley Kit, Westerbeke 18, 21a, 27a, 35b, 38b, 42b [48-wsp-18] Take An Extra 75% Off [OkDvbdly]

$65.99 $211.99 -69%

Pulley Kit, Westerbeke 18, 21A, 27A, 35B, 38B, 42BAltMount®Serpentine Pulley Conversion Kit for Westerbeke Diesel EnginesWesterbeke Engines Covered: 18, 21A, 27A, 35B, 38B, 42BKit Includes: Three Ten-Groove (J10) Pulleys, Two J10, 40" Circumference S

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Special Offer Balmar Pulley Kit, Westerbeke 18, 21a, 27a, 35b, 38b, 42b [48-wsp-18] Take An Extra 75% Off [OkDvbdly]

Pulley Kit, Westerbeke 18, 21A, 27A, 35B, 38B, 42B

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. 

Replaces:

  • 48-WSP-21A, 48-WSP-27A, 48-WSP-35B, 48-WSP-38B, 48-WSP-42B
This product may not be returned to the original point of purchase. Please contact the manufacturer directly with any issues or concerns.

What Our Customers Say

January 18, 2026

Absolutely no complaints!

It's a very clever and a very highly useful product.

- Urien D..

January 18, 2026

Absolutely no complaints!

This is a very solid, exceptionally and good tool.

- Ifan D..

January 18, 2026

Absolutely no complaints!

It's a very solid, and a very, very, very nice product.

- Bronwen G..

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