![Balmar Alternator 100 AMP 12V 1-2" Single Foot Spindle Mount J10 Pulley w\/Isolated Ground [621-100-J10]](https://cdn11.bigcommerce.com/s-6g54mu6qkm/images/stencil/600x600/products/48445/64468/97459XL__40414.1668808869.jpg?c=2 "Balmar Alternator 100 AMP 12V 1-2\" Single Foot Spindle Mount J10 Pulley w\/Isolated Ground [621-100-J10]")
![Balmar Alternator 100 AMP 12V 1-2" Single Foot Spindle Mount J10 Pulley w\/Isolated Ground [621-100-J10]](https://cdn11.bigcommerce.com/s-6g54mu6qkm/images/stencil/1280x1280/products/48445/64468/97459XL__40414.1668808869.jpg?c=2 "Balmar Alternator 100 AMP 12V 1-2\" Single Foot Spindle Mount J10 Pulley w\/Isolated Ground [621-100-J10]")
Product Overview
Alternator 100 AMP 12V 1-2" Single Foot Spindle Mount J10 Pulley with Isolated Ground
Alternator, 621 Series, 100A, 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: 621-100-SR-IG
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 12V 1-2" Single Foot Spindle Mount J10 Pulley w\/Isolated Ground [621-120-J10]](https://cdn11.bigcommerce.com/s-6g54mu6qkm/images/stencil/500x659/products/48478/64537/97461XL__85552.1669654414.jpg?c=2 "Balmar Alternator 120 AMP 12V 1-2\" Single Foot Spindle Mount J10 Pulley w\/Isolated Ground [621-120-J10]")
![Balmar Alternator 100 AMP 12V 3.15" Dual Foot Saddle J10 Pulley w\/Isolated Ground [60-100-J10]](https://cdn11.bigcommerce.com/s-6g54mu6qkm/images/stencil/500x659/products/48436/64459/97444XL__25541.1668808857.jpg?c=2 "Balmar Alternator 100 AMP 12V 3.15\" Dual Foot Saddle J10 Pulley w\/Isolated Ground [60-100-J10]")
![Balmar Alternator 100 AMP Kit 12V 1-2" Single Foot Spindle Mount J10 Pulley Regulator Temp Sensor [621-VUP-MC-100-J10]](https://cdn11.bigcommerce.com/s-6g54mu6qkm/images/stencil/500x659/products/48449/64472/97464XL__39481.1668808874.jpg?c=2 "Balmar Alternator 100 AMP Kit 12V 1-2\" Single Foot Spindle Mount J10 Pulley Regulator Temp Sensor [621-VUP-MC-100-J10]")
![Balmar Alternator 100 AMP 12V 1-2" Single Foot Spindle Mount K6 Pulley w\/Isolated Ground [621-100-K6]](https://cdn11.bigcommerce.com/s-6g54mu6qkm/images/stencil/500x659/products/48446/64469/97460XL__83792.1668808870.jpg?c=2 "Balmar Alternator 100 AMP 12V 1-2\" Single Foot Spindle Mount K6 Pulley w\/Isolated Ground [621-100-K6]")
![Balmar Alternator 100 AMP 12V 1-2" Single Foot Spindle Mount Dual Vee Pulley w\/Isolated Ground [621-100-DV]](https://cdn11.bigcommerce.com/s-6g54mu6qkm/images/stencil/500x659/products/48444/64467/97458XL__60925.1668808868.jpg?c=2 "Balmar Alternator 100 AMP 12V 1-2\" Single Foot Spindle Mount Dual Vee Pulley w\/Isolated Ground [621-100-DV]")
![Balmar Alternator 120 AMP Kit 12V 1-2" Single Foot Spindle Mount J10 Pulley Regulator Temp Sensor [621-VUP-MC-120-J10]](https://cdn11.bigcommerce.com/s-6g54mu6qkm/images/stencil/500x659/products/48414/64419/79805XL__90955.1668743807.jpg?c=2 "Balmar Alternator 120 AMP Kit 12V 1-2\" Single Foot Spindle Mount J10 Pulley Regulator Temp Sensor [621-VUP-MC-120-J10]")
![Balmar Alternator 120 AMP 12V 3.15" Dual Foot Saddle J10 Pulley Isolated Ground [60-120-J10]](https://cdn11.bigcommerce.com/s-6g54mu6qkm/images/stencil/500x659/products/51120/67863/90196XL__75462.1678925581.jpg?c=2 "Balmar Alternator 120 AMP 12V 3.15\" Dual Foot Saddle J10 Pulley Isolated Ground [60-120-J10]")
![Balmar Alternator 120 AMP 12V 1-2" Single Foot Spindle Mount Dual Vee Pulley w\/Isolated Ground [621-120-DV]](https://cdn11.bigcommerce.com/s-6g54mu6qkm/images/stencil/500x659/products/48422/64427/95720XL__38456.1668743875.jpg?c=2 "Balmar Alternator 120 AMP 12V 1-2\" Single Foot Spindle Mount Dual Vee Pulley w\/Isolated Ground [621-120-DV]")
![Balmar Alternator 1-2" Single Foot J10 Serpentine Pulley - 170A - 12V [XT-SF-170-J10]](https://cdn11.bigcommerce.com/s-6g54mu6qkm/images/stencil/500x659/products/25706/26328/74952XL__70469.1540947848.jpg?c=2 "Balmar Alternator 1-2\" Single Foot J10 Serpentine Pulley - 170A - 12V [XT-SF-170-J10]")