Sale!
![Balmar 621 Series 120A Kit w/MC-618 Regulator, T-Sensor, K6 Pulley, Single FootMounting Hardware [621-VUP-MC-120-K6]](https://www.marinerailparts.com/wp-content/uploads/2026/10/balmar-621-series-120a-kit-w-mc-618-regulator-t-sensor-k6-pulley-single-footmoun.webp)
Balmar 621 Series 120A Kit w/MC-618 Regulator, T-Sensor, K6 Pulley, Single FootMounting Hardware [621-VUP-MC-120-K6]
Original price was: $574.19.$401.46Current price is: $401.46.
Sale!
Balmar 621 Series Alternator – Spindle Mount(Single Foot) – 100A – 12V
Original price was: $502.13.$312.92Current price is: $312.92.
Sale!
![Balmar 621 Series Alternator - Spindle Mount(Single Foot) - 100A - 12V [621-100-SV]](https://www.marinerailparts.com/wp-content/uploads/2026/10/balmar-621-series-alternator-spindle-mount-single-foot-100a-12v-621-100-sv.webp)
Balmar 621 Series Alternator – Spindle Mount(Single Foot) – 100A – 12V [621-100-SV]
Original price was: $394.19.$281.48Current price is: $281.48.
Sale!
![Balmar Alternator 1-2" Single Foot Dual V Pulley RegulatorTemp Sensor - 170A Kit - 12V [XT-SF-170-DV-KIT]](https://www.marinerailparts.com/wp-content/uploads/2026/10/balmar-alternator-1-2-single-foot-dual-v-pulley-regulatortemp-sensor-170a-kit-12.webp)
Balmar Alternator 1-2″ Single Foot Dual V Pulley RegulatorTemp Sensor – 170A Kit – 12V [XT-SF-170-DV-KIT]
Original price was: $702.59.$533.73Current price is: $533.73.
Sale!
![Balmar Alternator 1-2" Single Foot J10 Serpentine Pulley - 170A - 12V [XT-SF-170-J10]](https://www.marinerailparts.com/wp-content/uploads/2026/10/balmar-alternator-1-2-single-foot-j10-serpentine-pulley-170a-12v-xt-sf-170-j10.webp)
Balmar Alternator 1-2″ Single Foot J10 Serpentine Pulley – 170A – 12V [XT-SF-170-J10]
Original price was: $539.39.$309.99Current price is: $309.99.
Sale!
![Balmar Alternator 1-2" Single Foot K6 Serpentine Pulley - 170A - 12V [XT-SF-170-K6]](https://www.marinerailparts.com/wp-content/uploads/2026/10/balmar-alternator-1-2-single-foot-k6-serpentine-pulley-170a-12v-xt-sf-170-k6.webp)
Balmar Alternator 1-2″ Single Foot K6 Serpentine Pulley – 170A – 12V [XT-SF-170-K6]
Original price was: $539.39.$429.15Current price is: $429.15.
Sale!
![Balmar Alternator 100 AMP 12V 1-2" Single Foot Spindle Mount Dual Vee Pulley w/Isolated Ground [621-100-DV]](https://www.marinerailparts.com/wp-content/uploads/2026/10/balmar-alternator-100-amp-12v-1-2-single-foot-spindle-mount-dual-vee-pulley-w-is.webp)
Balmar Alternator 100 AMP 12V 1-2″ Single Foot Spindle Mount Dual Vee Pulley w/Isolated Ground [621-100-DV]
Original price was: $394.19.$307.43Current price is: $307.43.
Sale!
![Balmar Alternator 100 AMP 12V 1-2" Single Foot Spindle Mount K6 Pulley w/Isolated Ground [621-100-K6]](https://www.marinerailparts.com/wp-content/uploads/2026/10/balmar-alternator-100-amp-12v-1-2-single-foot-spindle-mount-k6-pulley-w-isolated.webp)
Balmar Alternator 100 AMP 12V 1-2″ Single Foot Spindle Mount K6 Pulley w/Isolated Ground [621-100-K6]
Original price was: $450.59.$258.16Current price is: $258.16.
Sale!
![Balmar Alternator 120 AMP 12V 1-2" Single Foot Spindle Mount Dual Vee Pulley RegulatorTemp Sensor [621-VUP-MC-120-DV]](https://www.marinerailparts.com/wp-content/uploads/2026/10/balmar-alternator-120-amp-12v-1-2-single-foot-spindle-mount-dual-vee-pulley-regu.webp)
Balmar Alternator 120 AMP 12V 1-2″ Single Foot Spindle Mount Dual Vee Pulley RegulatorTemp Sensor [621-VUP-MC-120-DV]
Original price was: $831.77.$490.51Current price is: $490.51.
Sale!
![Balmar Alternator 120 Amp 12V 3.15" Dual foot Saddle Single K6 Pulley w/Isolated Grounding [60-120-K6]](https://www.marinerailparts.com/wp-content/uploads/2026/10/balmar-alternator-120-amp-12v-3-15-dual-foot-saddle-single-k6-pulley-w-isolated-.webp)
Balmar Alternator 120 Amp 12V 3.15″ Dual foot Saddle Single K6 Pulley w/Isolated Grounding [60-120-K6]
Original price was: $426.59.$272.93Current price is: $272.93.
Sale!
![Balmar Alternator 150 AMP 12V 4" Dual Foot Saddle K6 Pulley w/Isolated Ground [604-150-K6]](https://www.marinerailparts.com/wp-content/uploads/2026/10/balmar-alternator-150-amp-12v-4-dual-foot-saddle-k6-pulley-w-isolated-ground-604.webp)
Balmar Alternator 150 AMP 12V 4″ Dual Foot Saddle K6 Pulley w/Isolated Ground [604-150-K6]
Original price was: $785.72.$487.73Current price is: $487.73.
Sale!
![Balmar Alternator 3.15" Dual Foot Saddle J10 Serpentine Pulley - 170A - 12V [XT-DF-170-J10]](https://www.marinerailparts.com/wp-content/uploads/2026/10/balmar-alternator-3-15-dual-foot-saddle-j10-serpentine-pulley-170a-12v-xt-df-170.webp)