Description
Alternator 120 AMP Kit 12V 1-2″ Single Foot Spindle Mount J10 Pulley Regulator & Temp Sensor
Kit Includes: 621-120-J10 Alternator, MC-614 Regulator, Temperature Sensors, Mounting Hardware
621-120-J10 Alternator: 120A, 12V, Spindle Mount (Single Foot), 1-2in, J10 AltMount Serpentine Pulley, Isolated Ground
1″ Motorola-Style Mounting; Typical for Westerbeke, Lehman, Hino & Pathfinder Engines2″ Delco-Style Mounting; Typical for Volvo Penta (Gas & Diesel), John Deere, Perkins, Mercruiser, Pleasurecraft, Crusader, Indmar, Marine Power & other GM-based Engines
Replaces: 621-VUP-MC-120-SR-KIT
This product may not be returned to the original point of purchase.Please contact the manufacturer directly with any issues or concerns. Brochure (pdf)

![Balmar Alternator 120 AMP Kit 12V 1-2 Single Foot Spindle Mount J10 Pulley RegulatorTemp Sensor [621-VUP-MC-120-J10]](https://www.diyhardwareshop.com/wp-content/uploads/2026/07/balmar-alternator-120-amp-kit-12v-1-2-single-foot-spindle-mount-j10-pulley-regul.webp)

