Collection: Marine-Grade Alternators | Reliable Power for Every Voyage
Power your adventures with confidence using our Marine-Grade Alternators collection! Designed for the demands of the marine environment, these alternators provide consistent energy to keep your boat’s electrical systems running smoothly. Built to resist salt, spray, and UV exposure, they deliver reliable performance for powering lights, electronics, and other essential systems. Whether you’re upgrading or replacing, our marine-grade alternators combine durability and efficiency for worry-free sailing. Shop now and enjoy free U.S. shipping on all orders!
⛵️ Sail Away with Free U.S. Shipping! ⚓️
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Balmar Temp Sensor Alternator - 54" Length [MC-TS-A]Balmar Temp Sensor Alternator - 54" Length [MC-TS-A]
- Regular price
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$38.99 - Regular price
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$42.99 - Sale price
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$38.99
Sale -
Balmar Belt Buddy w/Universal Adjustment Arm [UBB]Balmar Belt Buddy w/Universal Adjustment Arm [UBB]
- Regular price
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$71.99 - Regular price
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$79.99 - Sale price
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$71.99
Sale -
Balmar Digital Duo Charge - 12/24V [DDC-12/24]Balmar Digital Duo Charge - 12/24V [DDC-12/24]
- Regular price
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$232.00 - Regular price
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$259.00 - Sale price
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$232.00
Sale -
Balmar Temperature Sensor Alternator - 80" Length [MC-TS-A80]Balmar Temperature Sensor Alternator - 80" Length [MC-TS-A80]
- Regular price
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$40.99 - Regular price
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$45.99 - Sale price
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$40.99
Sale -
Balmar Max Charge MC-618 Multi-Stage Regulator w/ 54" Harness - 12V [MC-618-H]Balmar Max Charge MC-618 Multi-Stage Regulator w/ 54" Harness - 12V [MC-618-H]
- Regular price
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$328.00 - Regular price
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$367.00 - Sale price
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$328.00
Sale -
Balmar Regulator Kit f/Valeo w/MC-618 [MC-618-VL-01]Balmar Regulator Kit f/Valeo w/MC-618 [MC-618-VL-01]
- Regular price
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$535.00 - Regular price
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$599.00 - Sale price
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$535.00
Sale -
Balmar 60 Series Alternator - Saddle Mount(Dual Foot) - 100A - 12V [60-100-SV]Balmar 60 Series Alternator - Saddle Mount(Dual Foot) - 100A - 12V [60-100-SV]
- Regular price
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$688.00 - Regular price
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$770.00 - Sale price
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$688.00
Sale -
ARCO Marine Premium Replacement Outboard Alternator - Verado 12V 70A [20860]ARCO Marine Premium Replacement Outboard Alternator - Verado 12V 70A [20860]
- Regular price
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$324.99 - Regular price
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$400.85 - Sale price
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$324.99
Sale -
Balmar Alternator 120 Amp 12V 1-2" Single Foot Single K6 Pulley w/Isolated Grounding [621-120-K6]Balmar Alternator 120 Amp 12V 1-2" Single Foot Single K6 Pulley w/Isolated Grounding [621-120-K6]
- Regular price
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$766.00 - Regular price
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$857.00 - Sale price
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$766.00
Sale -
Balmar Alternator 100 AMP 12V 1-2" Single Foot Spindle Mount Dual Vee Pulley w/Isolated Ground [621-100-DV]Balmar Alternator 100 AMP 12V 1-2" Single Foot Spindle Mount Dual Vee Pulley w/Isolated Ground [621-100-DV]
- Regular price
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$688.00 - Regular price
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$770.00 - Sale price
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$688.00
Sale -
Balmar Alternator 100 AMP Kit 12V 3.15" Dual Foot Saddle Single Vee Pulley Regulator Temp Sensor [60-YP-MC-100-SV]Balmar Alternator 100 AMP Kit 12V 3.15" Dual Foot Saddle Single Vee Pulley Regulator Temp Sensor [60-YP-MC-100-SV]
- Regular price
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$925.00 - Regular price
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$1,035.00 - Sale price
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$925.00
Sale -
Balmar Kit 621 Series 100A Single FT Alt MC Reg T Sensor [621-VUP-MC-100-SV]Balmar Kit 621 Series 100A Single FT Alt MC Reg T Sensor [621-VUP-MC-100-SV]
- Regular price
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$925.00 - Regular price
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$1,035.00 - Sale price
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$925.00
Sale -
Balmar Alternator 250 AMP 12V 3.15" Dual Foot Saddle J10 Pulley [XT-DF-250-J10]Balmar Alternator 250 AMP 12V 3.15" Dual Foot Saddle J10 Pulley [XT-DF-250-J10]
- Regular price
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$1,207.00 - Regular price
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$1,350.00 - Sale price
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$1,207.00
Sale -
ARCO Marine Premium Replacement Alternator w/Single Groove Pulley - 12V, 55A [60050]ARCO Marine Premium Replacement Alternator w/Single Groove Pulley - 12V, 55A [60050]
- Regular price
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$203.99 - Regular price
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$248.24 - Sale price
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$203.99
Sale -
Balmar Alternator 250 AMP Kit 12V 4" Dual Foot Saddle Dual Vee Pulley Regulator Temp Sensor [XT-DF4-250-DV-KIT ]Balmar Alternator 250 AMP Kit 12V 4" Dual Foot Saddle Dual Vee Pulley Regulator Temp Sensor [XT-DF4-250-DV-KIT ]
- Regular price
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$1,444.00 - Regular price
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$1,615.00 - Sale price
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$1,444.00
Sale -
Balmar Belt Buddy w/Universal Offset Adjustment Arm (UAA2) [UBB2]Balmar Belt Buddy w/Universal Offset Adjustment Arm (UAA2) [UBB2]
- Regular price
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$89.99 - Regular price
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$99.99 - Sale price
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$89.99
Sale -
Balmar Alternator 120 AMP 12V 4" Dual Foot Saddle K6 Pulley w/Isolated Ground [604-120-K6]Balmar Alternator 120 AMP 12V 4" Dual Foot Saddle K6 Pulley w/Isolated Ground [604-120-K6]
- Regular price
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$766.00 - Regular price
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$857.00 - Sale price
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$766.00
Sale -
Balmar Alternator 100 AMP Kit 12V 1-2" Single Foot Spindle Mount Dual Vee Pulley Regulator Temp Sensor [621-VUP-MC-100-DV]Balmar Alternator 100 AMP Kit 12V 1-2" Single Foot Spindle Mount Dual Vee Pulley Regulator Temp Sensor [621-VUP-MC-100-DV]
- Regular price
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$925.00 - Regular price
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$1,035.00 - Sale price
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$925.00
Sale -
Balmar Alternator 170 Amp, 12V Single Foot Internal Regulator K6 Pulley [XT-SF-170-IR]Balmar Alternator 170 Amp, 12V Single Foot Internal Regulator K6 Pulley [XT-SF-170-IR]
- Regular price
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$539.00 - Regular price
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$588.00 - Sale price
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$539.00
Sale -
Balmar 621 Series Alternator - Spindle Mount(Single Foot) - 100A - 12V [621-100-SV]Balmar 621 Series Alternator - Spindle Mount(Single Foot) - 100A - 12V [621-100-SV]
- Regular price
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$688.00 - Regular price
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$770.00 - Sale price
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$688.00
Sale -
ARCO Marine Premium Replacement Outboard Alternator w/Multi-Groove Pulley - 12V 50A [20850]ARCO Marine Premium Replacement Outboard Alternator w/Multi-Groove Pulley - 12V 50A [20850]
- Regular price
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$380.99 - Regular price
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$470.00 - Sale price
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$380.99
Sale -
Balmar Alternator 250 AMP 12V 3.15" Dual Foot Saddle K6 Pulley [XT-CR-250-K6]Balmar Alternator 250 AMP 12V 3.15" Dual Foot Saddle K6 Pulley [XT-CR-250-K6]
- Regular price
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$1,207.00 - Regular price
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$1,350.00 - Sale price
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$1,207.00
Sale -
Balmar Alternator 250 AMP Kit 12V 3.15" Dual Foot Saddle J10 Pulley Regulator Temp Sensor [XT-DF-250-J10-KIT]Balmar Alternator 250 AMP Kit 12V 3.15" Dual Foot Saddle J10 Pulley Regulator Temp Sensor [XT-DF-250-J10-KIT]
- Regular price
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$1,444.00 - Regular price
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$1,615.00 - Sale price
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$1,444.00
Sale -
Balmar Alternator 170 AMP Kit 12V 3.15" Dual Foot Saddle K6 Pulley Regulator Temp Sensor [XT-CR-170-K6-KIT]Balmar Alternator 170 AMP Kit 12V 3.15" Dual Foot Saddle K6 Pulley Regulator Temp Sensor [XT-CR-170-K6-KIT]
- Regular price
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$1,220.00 - Regular price
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$1,365.00 - Sale price
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$1,220.00
Sale -
Balmar Alternator 100 AMP 12V 3.15" Dual Foot Saddle K6 Pulley w/Isolated Ground [60-100-K6]Balmar Alternator 100 AMP 12V 3.15" Dual Foot Saddle K6 Pulley w/Isolated Ground [60-100-K6]
- Regular price
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$688.00 - Regular price
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$770.00 - Sale price
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$688.00
Sale -
Balmar Alternator 250 AMP Kit 12V 3.15" Dual Foot Saddle K6 Pulley Regulator Temp Sensor [XT-CR-250-K6-KIT]Balmar Alternator 250 AMP Kit 12V 3.15" Dual Foot Saddle K6 Pulley Regulator Temp Sensor [XT-CR-250-K6-KIT]
- Regular price
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$1,444.00 - Regular price
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$1,615.00 - Sale price
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$1,444.00
Sale -
Balmar Alternator 120 AMP 12V 3.15" Dual Foot Saddle Dual Pulley w/Isolated Ground [60-120-DV]Balmar Alternator 120 AMP 12V 3.15" Dual Foot Saddle Dual Pulley w/Isolated Ground [60-120-DV]
- Regular price
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$766.00 - Regular price
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$857.00 - Sale price
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$766.00
Sale -
Balmar Alternator 250 AMP 12V 3.15" Dual Foot Saddle Dual Vee Pulley [XT-DF-250-DV]Balmar Alternator 250 AMP 12V 3.15" Dual Foot Saddle Dual Vee Pulley [XT-DF-250-DV]
- Regular price
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$1,207.00 - Regular price
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$1,350.00 - Sale price
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$1,207.00
Sale -
Balmar Alternator 170 AMP Kit 12V 3.15" Dual Foot Saddle J10 Pulley Regulator Temp Sensor [XT-CR-170-J10-KIT]Balmar Alternator 170 AMP Kit 12V 3.15" Dual Foot Saddle J10 Pulley Regulator Temp Sensor [XT-CR-170-J10-KIT]
- Regular price
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$1,220.00 - Regular price
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$1,365.00 - Sale price
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$1,220.00
Sale -
Balmar Offshore Repair Kit AT Series 200AMP 12V Includes Bearings, Brushes, Rectifier [70-AT-200]Balmar Offshore Repair Kit AT Series 200AMP 12V Includes Bearings, Brushes, Rectifier [70-AT-200]
- Regular price
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$202.00 - Regular price
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$226.00 - Sale price
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$202.00
Sale -
Balmar Alternator 170 AMP 12V 3.15" Dual Foot Saddle J10 Pulley [XT-CR-170-J10]Balmar Alternator 170 AMP 12V 3.15" Dual Foot Saddle J10 Pulley [XT-CR-170-J10]
- Regular price
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$984.00 - Regular price
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$1,100.00 - Sale price
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$984.00
Sale -
Balmar Alternator 120 AMP Kit 12V 3.15" Dual Foot Saddle Dual Vee Pulley Regulator Temp Sensor [60-YP-MC-120-DV]Balmar Alternator 120 AMP Kit 12V 3.15" Dual Foot Saddle Dual Vee Pulley Regulator Temp Sensor [60-YP-MC-120-DV]
- Regular price
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$1,003.00 - Regular price
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$1,122.00 - Sale price
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$1,003.00
Sale -
Balmar Alternator 170 AMP 12V 3.15" Dual Foot Saddle K6 Pulley [XT-CR-170-K6]Balmar Alternator 170 AMP 12V 3.15" Dual Foot Saddle K6 Pulley [XT-CR-170-K6]
- Regular price
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$984.00 - Regular price
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$1,100.00 - Sale price
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$984.00
Sale -
Balmar Alternator 100 AMP Kit 12V 1-2" Single Foot Spindle Mount K6 Pulley Regulator Temp Sensor [621-VUP-MC-100-K6]Balmar Alternator 100 AMP Kit 12V 1-2" Single Foot Spindle Mount K6 Pulley Regulator Temp Sensor [621-VUP-MC-100-K6]
- Regular price
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$925.00 - Regular price
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$1,035.00 - Sale price
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$925.00
Sale -
Balmar Alternator 250 AMP 12V 3.15" Dual Foot Saddle K6 Pulley [XT-DF-250-K6]Balmar Alternator 250 AMP 12V 3.15" Dual Foot Saddle K6 Pulley [XT-DF-250-K6]
- Regular price
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$1,207.00 - Regular price
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$1,350.00 - Sale price
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$1,207.00
Sale -
Balmar Alternator 170 AMP Kit 12V 4" Dual Foot Saddle K6 Pulley Regulator Temp Sensor [XT-DF4-170-K6-KIT]Balmar Alternator 170 AMP Kit 12V 4" Dual Foot Saddle K6 Pulley Regulator Temp Sensor [XT-DF4-170-K6-KIT]
- Regular price
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$1,220.00 - Regular price
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$1,365.00 - Sale price
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$1,220.00
Sale -
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 Kit 12V 1-2" Single Foot Spindle Mount J10 Pulley Regulator Temp Sensor [621-VUP-MC-100-J10]
- Regular price
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$925.00 - Regular price
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$1,035.00 - Sale price
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$925.00
Sale -
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]
- Regular price
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$688.00 - Regular price
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$770.00 - Sale price
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$688.00
Sale -
Balmar Alternator 250 AMP Kit 12V 3.15" Dual Foot Saddle Dual Vee Pulley Regulator Temp Sensor [XT-DF-250-DV-KIT]Balmar Alternator 250 AMP Kit 12V 3.15" Dual Foot Saddle Dual Vee Pulley Regulator Temp Sensor [XT-DF-250-DV-KIT]
- Regular price
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$1,444.00 - Regular price
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$1,615.00 - Sale price
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$1,444.00
Sale -
Balmar Alternator 170 AMP Kit 12V 4" Dual Foot Saddle K6 Pulley [XT-DF4-170-K6]Balmar Alternator 170 AMP Kit 12V 4" Dual Foot Saddle K6 Pulley [XT-DF4-170-K6]
- Regular price
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$984.00 - Regular price
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$1,100.00 - Sale price
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$984.00
Sale -
Balmar Alternator 100 AMP 12V 3.15" Dual Foot Saddle Pulley w/Isolated Ground [60-100-DV]Balmar Alternator 100 AMP 12V 3.15" Dual Foot Saddle Pulley w/Isolated Ground [60-100-DV]
- Regular price
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$688.00 - Regular price
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$770.00 - Sale price
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$688.00
Sale -
Balmar Alternator 100 AMP Kit 12V 3.15" Dual Foot Saddle Dual Pulley Regulator Temp Sensor [60-YP-MC-100-DV]Balmar Alternator 100 AMP Kit 12V 3.15" Dual Foot Saddle Dual Pulley Regulator Temp Sensor [60-YP-MC-100-DV]
- Regular price
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$925.00 - Regular price
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$1,035.00 - Sale price
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$925.00
Sale -
ARCO Marine Premium Replacement Alternator w/Multi-Groove Pulley - 12V 55A [60055]ARCO Marine Premium Replacement Alternator w/Multi-Groove Pulley - 12V 55A [60055]
- Regular price
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$217.99 - Regular price
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$264.40 - Sale price
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$217.99
Sale -
ARCO Marine Premium Replacement Inboard Alternator w/55mm Multi-Groove Pulley - 12V 65A [60073]ARCO Marine Premium Replacement Inboard Alternator w/55mm Multi-Groove Pulley - 12V 65A [60073]
- Regular price
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$238.99 - Regular price
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$291.35 - Sale price
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$238.99
Sale -
Balmar Alternator 100 AMP Kit 12V 3.15" Dual Foot Saddle K6 Pulley Regulator Temp Sensor [60-YP-MC-100-K6]Balmar Alternator 100 AMP Kit 12V 3.15" Dual Foot Saddle K6 Pulley Regulator Temp Sensor [60-YP-MC-100-K6]
- Regular price
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$925.00 - Regular price
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$1,035.00 - Sale price
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$925.00
Sale -
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 K6 Pulley w/Isolated Ground [621-100-K6]
- Regular price
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$688.00 - Regular price
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$770.00 - Sale price
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$688.00
Sale -
ARCO Marine Premium Replacement Alternator w/50mm Multi-Groove Pulley [20815]ARCO Marine Premium Replacement Alternator w/50mm Multi-Groove Pulley [20815]
- Regular price
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$244.99 - Regular price
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$307.45 - Sale price
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$244.99
Sale -
ARCO Marine Premium Replacement Inboard Alternator w/Single Groove Pulley - 12V 55A [60125]ARCO Marine Premium Replacement Inboard Alternator w/Single Groove Pulley - 12V 55A [60125]
- Regular price
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$230.99 - Regular price
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$280.80 - Sale price
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$230.99
Sale -
Balmar Offshore Repair Kit 90 Series 12/24V Includes Bearings, Brushes, Positive/Negative Diode [7090]Balmar Offshore Repair Kit 90 Series 12/24V Includes Bearings, Brushes, Positive/Negative Diode [7090]
- Regular price
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$126.00 - Regular price
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$140.00 - Sale price
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$126.00
Sale -
Balmar Alternator 150 AMP 12V 4" Dual Foot Saddle K6 Pulley w/Isolated Ground [604-150-K6]Balmar Alternator 150 AMP 12V 4" Dual Foot Saddle K6 Pulley w/Isolated Ground [604-150-K6]
- Regular price
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$904.00 - Regular price
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$1,011.00 - Sale price
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$904.00
Sale -
ARCO Marine Premium Replacement Alternator w/65mm Multi-Groove Pulley - 12V 70A [20800]ARCO Marine Premium Replacement Alternator w/65mm Multi-Groove Pulley - 12V 70A [20800]
- Regular price
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$197.99 - Regular price
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$243.50 - Sale price
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$197.99
Sale -
ARCO Marine Premium Replacement Alternator w/Single Groove Pulley - 12V 70A [20102]ARCO Marine Premium Replacement Alternator w/Single Groove Pulley - 12V 70A [20102]
- Regular price
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$196.99 - Regular price
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$221.35 - Sale price
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$196.99
Sale -
Balmar Alternator 100 AMP 12V 3.15" Dual Foot Saddle J10 Pulley w/Isolated Ground [60-100-J10]Balmar Alternator 100 AMP 12V 3.15" Dual Foot Saddle J10 Pulley w/Isolated Ground [60-100-J10]
- Regular price
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$688.00 - Regular price
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$770.00 - Sale price
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$688.00
Sale -
Balmar Offshore Repair Kit 95 Series 12/24V Includes Bearings, Brushes, Positive/Negative Diode [7095]Balmar Offshore Repair Kit 95 Series 12/24V Includes Bearings, Brushes, Positive/Negative Diode [7095]
- Regular price
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$227.00 - Regular price
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$254.00 - Sale price
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$227.00
Sale -
ARCO Marine Premium Replacement Universal Alternator w/Single Groove Pulley - 12V 55A [60075]ARCO Marine Premium Replacement Universal Alternator w/Single Groove Pulley - 12V 55A [60075]
- Regular price
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$221.99 - Regular price
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$269.50 - Sale price
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$221.99
Sale -
Balmar Alternator 120 AMP 12V 1-2" Single Foot Spindle Mount Dual Vee Pulley w/Isolated Ground [621-120-DV]Balmar Alternator 120 AMP 12V 1-2" Single Foot Spindle Mount Dual Vee Pulley w/Isolated Ground [621-120-DV]
- Regular price
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$766.00 - Regular price
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$857.00 - Sale price
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$766.00
Sale -
Balmar Alternator 150 AMP 12V 4" Dual Foot Saddle Dual Pulley w/Isolated Ground [604-150-DV]Balmar Alternator 150 AMP 12V 4" Dual Foot Saddle Dual Pulley w/Isolated Ground [604-150-DV]
- Regular price
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$904.00 - Regular price
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$1,011.00 - Sale price
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$904.00
Sale -
Balmar Alternator Protection Module APM24 - 24V [APM-24]Balmar Alternator Protection Module APM24 - 24V [APM-24]
- Regular price
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$89.99 - Regular price
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$99.99 - Sale price
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$89.99
Sale -
Balmar Alternator 120 AMP 12V 1-2" Single Foot Spindle Mount Dual Vee Pulley Regulator Temp Sensor [621-VUP-MC-120-DV]Balmar Alternator 120 AMP 12V 1-2" Single Foot Spindle Mount Dual Vee Pulley Regulator Temp Sensor [621-VUP-MC-120-DV]
- Regular price
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$1,003.00 - Regular price
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$1,122.00 - Sale price
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$1,003.00
Sale -
Balmar 621 Series 120A Kit w/MC-618 Regulator, T-Sensor, K6 Pulley, Single Foot Mounting Hardware [621-VUP-MC-120-K6]Balmar 621 Series 120A Kit w/MC-618 Regulator, T-Sensor, K6 Pulley, Single Foot Mounting Hardware [621-VUP-MC-120-K6]
- Regular price
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$1,003.00 - Regular price
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$1,122.00 - Sale price
-
$1,003.00
Sale