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 Zeus A225S J-180 3.15" Alternator w/Terminal Block [4010]
Regular price $767.80 USDRegular price$874.50 USD-$106.70 USD Sale price $767.80 USD -
Vendor:ARCO Marine
ARCO Marine Premium Replacement Universal Alternator w/Single Groove Pulley - 12V 55A [60075]
Regular price $228.95 USDRegular price$284.52 USD-$55.57 USD Sale price $228.95 USD -
Vendor:Balmar
Balmar 60 Series Alternator - Saddle Mount(Dual Foot) - 100A - 12V [60-100-SV]
Regular price $688.00 USDRegular price$770.00 USD-$82.00 USD Sale price $688.00 USD -
Vendor:Balmar
Balmar Alternator 120 AMP 12V 3.15" Dual Foot Saddle Dual Pulley w/Isolated Ground [60-120-DV]
Regular price $766.00 USDRegular price$857.00 USD-$91.00 USD Sale price $766.00 USD -
Vendor:Balmar
Balmar Alternator 100 AMP 12V 3.15" Dual Foot Saddle K6 Pulley w/Isolated Ground [60-100-K6]
Regular price $688.00 USDRegular price$770.00 USD-$82.00 USD Sale price $688.00 USD -
Vendor:Balmar
Balmar Pulley Kit, Yanmar 4JH4-HTE-TE-DTE [48-YSP-4JH-B]
Regular price $643.50 USDRegular price$0.00 USDSale price $643.50 USD -
Vendor:ARCO Marine
ARCO Marine Replacement Alternator f/Mercury Engines - 75-115 HP [20852]
Regular price $270.95 USDRegular price$375.85 USD-$104.90 USD Sale price $270.95 USD -
Vendor:ARCO Marine
ARCO Marine Zeus A225S 3.15 Alternator w/Isolated Ground Terminal Block [4011]
Regular price $877.80 USDRegular price$999.90 USD-$122.10 USD Sale price $877.80 USD -
Vendor:Balmar
Balmar Belt Buddy w/Universal Adjustment Arm [UBB]
Regular price $71.99 USDRegular price$79.99 USD-$8.00 USD Sale price $71.99 USD -
Vendor:Balmar
Balmar Pulley Kit f/Yanmar 4JH2-TE, 4JH2-HTE, 4JH2-DTE 4JH2-UTE [48-YSP-4JH-E]
Regular price $643.50 USDRegular price$0.00 USDSale price $643.50 USD -
Vendor:Balmar
Balmar Alternator 250 AMP 12V 3.15" Dual Foot Saddle J10 Pulley [XT-DF-250-J10]
Regular price $1,207.00 USDRegular price$1,350.00 USD-$143.00 USD Sale price $1,207.00 USD -
Vendor:ARCO Marine
ARCO Marine Zeus A275L Transit Alternator w/Terminal Block [4032]
Regular price $986.70 USDRegular price$1,124.20 USD-$137.50 USD Sale price $986.70 USD -
Vendor:ARCO Marine
ARCO Marine Zeus 24V 7kW J180 4" Alternator w/Isolated Ground [4503]
Regular price $1,427.80 USDRegular price$1,648.90 USD-$221.10 USD Sale price $1,427.80 USD -
Vendor:Balmar
Balmar Pulley Kit f/Perkins 4170, 4108 (K6) [48-PSP-410-A]
Regular price $799.99 USDRegular price$0.00 USDSale price $799.99 USD -
Vendor:ARCO Marine
ARCO Marine Zeus A8000-48V 8kW J180 4" Alternator w/Isolated Ground [4603]
Regular price $2,143.90 USDRegular price$2,528.90 USD-$385.00 USD Sale price $2,143.90 USD -
Vendor:ARCO Marine
ARCO Marine Zeus A8000-48V 8kW 3.15 Alternator w/Isolated Ground (Common Rail) [4602]
Regular price $2,143.90 USDRegular price$2,528.90 USD-$385.00 USD Sale price $2,143.90 USD