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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-$183.74 USD
Vendor:BalmarBalmar Alternator 170 AMP Kit 12V 3.15" Dual Foot Saddle J10 Pulley Regulator Temp Sensor [XT-CR-170-J10-KIT]
Regular price $1,306.95 USDRegular price$1,490.69 USD-$183.74 USD Sale price $1,306.95 USD -
-$141.04 USD
Vendor:BalmarBalmar Alternator 170 AMP 12V 3.15" Dual Foot Saddle J10 Pulley [XT-CR-170-J10]
Regular price $1,002.95 USDRegular price$1,143.99 USD-$141.04 USD Sale price $1,002.95 USD -
-$103.94 USD
Vendor:BalmarBalmar Alternator 100 AMP 12V 3.15" Dual Foot Saddle K6 Pulley w/Isolated Ground [60-100-K6]
Regular price $732.95 USDRegular price$836.89 USD-$103.94 USD Sale price $732.95 USD -
-$183.74 USD
Vendor:BalmarBalmar Alternator 170 AMP Kit 12V 3.15" Dual Foot Saddle K6 Pulley Regulator Temp Sensor [XT-CR-170-K6-KIT]
Regular price $1,306.95 USDRegular price$1,490.69 USD-$183.74 USD Sale price $1,306.95 USD -
-$150.44 USD
Vendor:BalmarBalmar Alternator 120 AMP Kit 120V 3.15" Dual Foot Saddle J10 Pulley Regulator Temp Sensor [60-YP-MC-120-J10]
Regular price $1,068.95 USDRegular price$1,219.39 USD-$150.44 USD Sale price $1,068.95 USD -
-$141.04 USD
Vendor:BalmarBalmar Alternator 3.15" Dual Foot Saddle J10 Serpentine Pulley - 170A - 12V [XT-DF-170-J10]
Regular price $1,002.95 USDRegular price$1,143.99 USD-$141.04 USD Sale price $1,002.95 USD -
-$57.56 USD
Vendor:ARCO MarineARCO Marine Replacement Alternator f/Mercury Engines - 135 150 HP [20851]
Regular price $274.95 USDRegular price$332.51 USD-$57.56 USD Sale price $274.95 USD -
Vendor:BalmarBalmar Pulley Kit f/Yanmar 4JH3-TE, 4JH3-HTE [48-YSP-4JH-D]
Regular price $689.49 USDRegular price$0.00 USDSale price $689.49 USD -
Vendor:BalmarBalmar Pulley Kit f/Volvo D2-55, A, B, C, D, E, F [48-VSP-D2-A]
Regular price $689.49 USDRegular price$0.00 USDSale price $689.49 USD -
-$138.94 USD
Vendor:BalmarBalmar Alternator 100 AMP Kit 12V 1-2" Single Foot Spindle Mount Dual Vee Pulley Regulator Temp Sensor [621-VUP-MC-100-DV]
Regular price $985.95 USDRegular price$1,124.89 USD-$138.94 USD Sale price $985.95 USD -
-$103.94 USD
Vendor:BalmarBalmar Alternator 100 AMP 12V 1-2" Single Foot Spindle Mount Dual Vee Pulley w/Isolated Ground [621-100-DV]
Regular price $732.95 USDRegular price$836.89 USD-$103.94 USD Sale price $732.95 USD -
-$19.44 USD
Vendor:BalmarBalmar Alternator Protection Module - 48V [APM-48]
Regular price $144.95 USDRegular price$164.39 USD-$19.44 USD Sale price $144.95 USD -
-$111.74 USD
Vendor:BalmarBalmar Alternator 120 AMP 12V 1-2" Single Foot Spindle Mount Dual Vee Pulley w/Isolated Ground [621-120-DV]
Regular price $792.95 USDRegular price$904.69 USD-$111.74 USD Sale price $792.95 USD -
-$81.34 USD
Vendor:BalmarBalmar Regulator Kit f/Valeo w/MC-618 [MC-618-VL-01]
Regular price $575.95 USDRegular price$657.29 USD-$81.34 USD Sale price $575.95 USD -
-$111.74 USD
Vendor:BalmarBalmar Alternator 120 Amp 12V 3.15" Dual foot Saddle Single K6 Pulley w/Isolated Grounding [60-120-K6]
Regular price $792.95 USDRegular price$904.69 USD-$111.74 USD Sale price $792.95 USD -
Vendor:BalmarBalmar Alternator 170 Amp, 12V Single Foot Internal Regulator K6 Pulley [XT-SF-170-IR]
Regular price $611.59 USDRegular price$0.00 USDSale price $611.59 USD