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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-$5.05 USD
Vendor:ARCO MarineARCO Zeus Alternator Shield - 48V [AS48]
Regular price $127.95 USDRegular price$133.00 USD-$5.05 USD Sale price $127.95 USD -
Vendor:BalmarBalmar Yanmar Pulley Kit f/4JH, 4JHE, -TE, -HTE, -DTE [48-YSP-4JH-F]
Regular price $689.49 USDRegular price$0.00 USDSale price $689.49 USD -
-$221.10 USD
Vendor:ARCO MarineARCO Marine Zeus 24V 4kW Low Turn On (LTO) 1"-2" Single Foot Alternator w/Isolated Ground [4405]
Regular price $1,427.80 USDRegular price$1,648.90 USD-$221.10 USD Sale price $1,427.80 USD -
-$216.74 USD
Vendor:BalmarBalmar Alternator 250 AMP Kit 12V 3.15" Dual Foot Saddle K6 Pulley Regulator Temp Sensor [XT-CR-250-K6-KIT]
Regular price $1,546.95 USDRegular price$1,763.69 USD-$216.74 USD Sale price $1,546.95 USD -
-$221.10 USD
Vendor:ARCO MarineARCO Marine Zeus 24V 4kW Low Turn On (LTO) 3.15 Alternator w/Isolated Ground (Common Rail) [4402]
Regular price $1,427.80 USDRegular price$1,648.90 USD-$221.10 USD Sale price $1,427.80 USD -
-$183.74 USD
Vendor:BalmarBalmar Alternator 1-2" Single Foot Dual V Pulley Regulator Temp Sensor - 170A Kit - 12V [XT-SF-170-DV-KIT]
Regular price $1,306.95 USDRegular price$1,490.69 USD-$183.74 USD Sale price $1,306.95 USD -
-$61.96 USD
Vendor:ARCO MarineARCO Marine Premium Replacement Alternator w/Single-Groove Pulley - 12V, 70A [20810]
Regular price $237.95 USDRegular price$299.91 USD-$61.96 USD Sale price $237.95 USD -
Vendor:BalmarBalmar Pulley Kit, Yanmar 4JH4-HTE-TE-DTE [48-YSP-4JH-B]
Regular price $689.49 USDRegular price$0.00 USDSale price $689.49 USD -
-$13.34 USD
Vendor:BalmarBalmar Belt Buddy w/Universal Offset Adjustment Arm (UAA2) [UBB2]
Regular price $96.95 USDRegular price$110.29 USD-$13.34 USD Sale price $96.95 USD -
-$111.74 USD
Vendor:BalmarBalmar Alternator 120 Amp 12V 1-2" Single Foot Single K6 Pulley w/Isolated Grounding [621-120-K6]
Regular price $792.95 USDRegular price$904.69 USD-$111.74 USD Sale price $792.95 USD -
-$221.10 USD
Vendor:ARCO MarineARCO Marine Zeus 24V 4kW Low Turn On (LTO) Vortec Alternator w/Isolated Ground [4406]
Regular price $1,427.80 USDRegular price$1,648.90 USD-$221.10 USD Sale price $1,427.80 USD -
-$138.94 USD
Vendor:BalmarBalmar Alternator 100 AMP Kit 12V 3.15" Dual Foot Saddle Dual Pulley Regulator Temp Sensor [60-YP-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 60 Series Alternator - Saddle Mount(Dual Foot) - 100A - 12V [60-100-SV]
Regular price $732.95 USDRegular price$836.89 USD-$103.94 USD Sale price $732.95 USD -
-$90.64 USD
Vendor:ARCO MarineARCO Marine Premium Replacement Outboard Alternator - Verado 12V 70A [20860]
Regular price $357.95 USDRegular price$448.59 USD-$90.64 USD Sale price $357.95 USD -
Vendor:BalmarBalmar Pulley Kit f/Yanmar 2GM20-F, 3GM30-F, 3GM-F [48-YSP-3GM-B]
Regular price $689.49 USDRegular price$0.00 USDSale price $689.49 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