Keep your boat's electrical system running smoothly with our collection of marine-grade engine alternators. Built to withstand the harsh marine environment, these high-performance alternators provide dependable charging power for your batteries and onboard electronics.
Whether you're replacing a worn-out unit or upgrading for higher output, our alternators are designed for durability, corrosion resistance, and consistent performance under load. Ideal for powering everything from navigation systems to fish finders and lighting, they help ensure you're never left without power on the water.
Shop now and choose from a range of 12V and 24V boat engine alternators compatible with leading marine engine brands—because when you're offshore, reliable power isn't optional, it's essential.
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Vendor:ARCO Marine
ARCO Marine Premium Replacement Inboard Alternator w/55mm Multi-Groove Pulley - 12V 65A [60073]
Regular price $246.95 USDRegular price$307.59 USD-$60.64 USD Sale price $246.95 USD -
Vendor:ARCO Marine
ARCO Marine Premium Replacement Alternator w/Single Groove Pulley - 12V 70A [20102]
Regular price $149.95 USDRegular price$233.69 USD-$83.74 USD Sale price $149.95 USD -
Vendor:ARCO Marine
ARCO Marine Premium Replacement Alternator w/50mm Multi-Groove Pulley [20815]
Regular price $252.95 USDRegular price$324.59 USD-$71.64 USD Sale price $252.95 USD -
Vendor:Balmar
Balmar Alternator 250 AMP Kit 12V 4" Dual Foot Saddle Dual Vee Pulley Regulator Temp Sensor [XT-DF4-250-DV-KIT ]
Regular price $1,444.00 USDRegular price$1,615.00 USD-$171.00 USD Sale price $1,444.00 USD -
Vendor:Balmar
Balmar Alternator 120 AMP 12V 1-2" Single Foot Spindle Mount Dual Vee Pulley Regulator Temp Sensor [621-VUP-MC-120-DV]
Regular price $1,003.00 USDRegular price$1,122.00 USD-$119.00 USD Sale price $1,003.00 USD -
Vendor:Balmar
Balmar Alternator Protection Module APM24 - 24V [APM-24]
Regular price $89.99 USDRegular price$99.99 USD-$10.00 USD Sale price $89.99 USD -
Vendor:Balmar
Balmar Kit 621 Series 100A Single FT Alt MC Reg T Sensor [621-VUP-MC-100-SV]
Regular price $925.00 USDRegular price$1,035.00 USD-$110.00 USD Sale price $925.00 USD -
Vendor:Balmar
Balmar Alternator 100 AMP Kit 12V 3.15" Dual Foot Saddle J10 Pulley Regulator Temp Sensor [60-YP-MC-100-J10]
Regular price $925.00 USDRegular price$1,035.00 USD-$110.00 USD Sale price $925.00 USD -
Vendor:Balmar
Balmar Temp Sensor Battery - 30 [MC-TS-B30]
Regular price $53.99 USDRegular price$59.99 USD-$6.00 USD Sale price $53.99 USD -
Vendor:Balmar
Balmar Alternator 120 AMP 12V 3.15" Dual Foot Saddle K6 Pulley Regulator Temp Sensor [60-YP-MC-120-K6]
Regular price $1,003.00 USDRegular price$1,122.00 USD-$119.00 USD Sale price $1,003.00 USD -
Vendor:Balmar
Balmar Centerfielder II 12/24V w/Wires - 2 Engines, 1 Bank [CFII-12/24]
Regular price $222.00 USDRegular price$248.00 USD-$26.00 USD Sale price $222.00 USD -
Vendor:Balmar
Balmar Alternator 120 Amp 12V 1-2" Single Foot Single K6 Pulley w/Isolated Grounding [621-120-K6]
Regular price $766.00 USDRegular price$857.00 USD-$91.00 USD Sale price $766.00 USD -
Vendor:Balmar
Balmar Alternator 120 Amp 12V 3.15" Dual foot Saddle Single K6 Pulley w/Isolated Grounding [60-120-K6]
Regular price $766.00 USDRegular price$857.00 USD-$91.00 USD Sale price $766.00 USD -
Vendor:Balmar
Balmar Alternator 170 Amp, 12V Single Foot Internal Regulator K6 Pulley [XT-SF-170-IR]
Regular price $539.00 USDRegular price$588.00 USD-$49.00 USD Sale price $539.00 USD -
Vendor:Balmar
Balmar Alternator 1-2" Single Foot K6 Serpentine Pulley - 170A - 12V [XT-SF-170-K6]
Regular price $984.00 USDRegular price$1,100.00 USD-$116.00 USD Sale price $984.00 USD -
Vendor:Balmar
Balmar Alternator 1-2" Single Foot J10 Serpentine Pulley - 170A - 12V [XT-SF-170-J10]
Regular price $984.00 USDRegular price$1,100.00 USD-$116.00 USD Sale price $984.00 USD