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Balmar
Balmar Alternator 120 AMP 12V 1-2" Single Foot Spindle Mount J10 Pulley w/Isolated Ground
In StockNewSKU: 621-120-J10
$768.99$904.69per unit
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Quick Specs
Amperage: 120AVoltage: 12v
Description
Alternator 120 AMP 12V 1-2" Single Foot Spindle Mount J10 Pulley with Isolated Ground
Alternator, 621 Series, 120A, 12V, Spindle Mount (Single Foot), 1-2in, J10 AltMount 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.
Replaces: 621-120-SR-IG
This product may not be returned to the original point of purchase. Please contact the manufacturer directly with any issues or concerns.Quick Specs
Amperage = 120A | Voltage = 12v
Accessories
No accessories listed for this product.
Specifications
| SKU | 621-120-J10 |
| UPC | 676205751186 |
| Brand | Balmar |
| Category | Electrical |
| Country of Origin | UNITED STATES |
| Weight | 12.79 |
| Dimensions | 10 x 9 x 9 |
| Status | Active |
| Last Synced | 10/8/2026, 2:08:20 AM |
Compliance & Shipping
Non-Returnable
Product Literature
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Frequently Bought Together
Total for 4 items:
$800.97
Compare Key Features
| Feature |  Balmar Alternator 120 AMP 12V 1-2" Single Foot Spindle Mount J10 Pulley w/Isolated Ground CURRENT |  ARCO Marine Premium Replacement Alternator w/Single Groove Pulley - 12V, 55A |  ARCO Marine Premium Replacement Universal Alternator w/Single Groove Pulley - 12V 55A |  ARCO Marine Premium Replacement Alternator w/Multi-Groove Pulley - 12V 55A |  ARCO Marine Premium Replacement Alternator w/65mm Multi-Groove Pulley - 12V 70A |
|---|---|---|---|---|---|
| Price | $768.99 | $8.51 | $20.74 | $2.73 | $3.99 |
| Brand | Balmar | ARCO Marine | ARCO Marine | ARCO Marine | ARCO Marine |
| Condition | New | New | New | New | New |
| Availability | In Stock | In Stock | In Stock | In Stock | In Stock |
| Weight | 12.79 | 9.75 | 11.21 | 11.3 | 10.01 |
| Dimensions | 10 x 9 x 9 | 8 x 8 x 7 | 9 x 7 x 7 | 9 x 8 x 8 | 9 x 8 x 7 |
| SKU | 621-120-J10 | 60050 | 60075 | 60055 | 20800 |
| Country | UNITED STATES | KOREA, SOUTH | KOREA, SOUTH | KOREA, SOUTH | KOREA, SOUTH |
| View Item | View Item | View Item | View Item | View Item |
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$768.99