# Balmar 621 Series 120A Kit w/MC-618 Regulator, T-Sensor, K6 Pulley, Single Foot  Mounting Hardware [621-VUP-MC-120-K6]

**621 Series 120A Kit with MC-618 Regulator, T-Sensor, K6 Pulley, Single Foot & Mounting Hardware**

**Kit Includes:** 

-   621-120-K6 Alternator
-   MC-618 Regulator
-   Temperature Sensors
-   Mounting Hardware

621-120-K6 Alternator: 120A, 12V, Spindle Mount (Single Foot), 1-2in, K6 Serpentine Pulley, Isolated Ground

1" Motorola-Style Mounting;  Typical for Westerbeke, Lehman, Hino & Pathfinder Engines  
2" Delco-Style Mounting;  Typical for Volvo Penta (Gas & Diesel), John Deere, Perkins, Mercruiser, Pleasurecraft, Crusader, Indmar, Marine Power & other GM-based Engines

**This product may not be returned to the original point of purchase. Please contact the manufacturer directly with any issues or concerns.**

**Specifications:**

-   Voltage: 12v
-   Amperage: 120A
-   Box Dimensions: 10"H x 10"W x 14"L WT: 7.46 lbs
-   UPC: 676205750950

  
[Quick Guide (pdf)](https://productimageserver.com/literature/quickGuide/88783QG.pdf)

## Details

- **Price:** 1219.39 USD
- **Type:** Alternators
- **Tags:** Brand_Balmar, Engine Parts & Service, Engine Parts & Service | Alternators

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 1219.39 USD | In stock |

## Images

- Balmar 621 Series 120A Kit w/MC-618 Regulator, T-Sensor, K6 Pulley, Single Foot  Mounting Hardware [621-VUP-MC-120-K6] Balmar

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> Source: [Besafe1st](https://besafe1st.com/products/balmar-621-series-120a-kit-w-mc-618-regulator-t-sensor-k6-pulley-single-foot-mounting-hardware-621-vup-mc-120-k6)
> Updated: 2026-05-21