Description
Pulley Kit for Yanmar 3JH5, 3JH4-E, 4JH4-E, 4JH5, 4JH5-E
AltMount® Serpentine Pulley Conversion Kit for Yanmar Diesel Engines
Yanmar Engines Covered: 3JH5, 3JH4-E, 4JH4-E, 4JH5
Kit Includes: Three Ten-Groove (J10) Pulleys, Two J10, 44.5″ Circumference Serpentine Belts (one spare) & Mounting Hardware
Note: 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.



![Balmar Belt Buddy w /o Adjustment Arm [BBU]](https://www.bestmarinewiring.com/wp-content/uploads/2026/08/balmar-belt-buddy-w-o-adjustment-arm-bbu.webp)
![Balmar Pulley Kit Yanmar f/3YM30 [48-YSP-3YM-B]](https://www.bestmarinewiring.com/wp-content/uploads/2026/08/balmar-pulley-kit-yanmar-f-3ym30-48-ysp-3ym-b.webp)
![Balmar Digital Duo Charge - 12 /24V [DDC-12 /24]](https://www.bestmarinewiring.com/wp-content/uploads/2026/08/balmar-digital-duo-charge-12-24v-ddc-12-24.webp)


![Balmar Alternator 170 AMP 12V 3.15" Dual Foot Saddle K6 Pulley [XT-CR-170-K6]](https://www.bestmarinewiring.com/wp-content/uploads/2026/08/balmar-alternator-170-amp-12v-3-15-dual-foot-saddle-k6-pulley-xt-cr-170-k6.webp)
![Balmar Alternator 250 AMP Kit 12V 3.15" Dual Foot Saddle K6 Pulley RegulatorTemp Sensor [XT-CR-250-K6-KIT]](https://www.bestmarinewiring.com/wp-content/uploads/2026/08/balmar-alternator-250-amp-kit-12v-3-15-dual-foot-saddle-k6-pulley-regulatortemp-.webp)