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Sierra Marine Alternators

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Sierra Marine alternators are designed to OEM specifications. All models meet or exceed USCG and SAE J1171 safety requirements and are 100 percent load-tested for assured reliability. Order the replacement alternator recommended for your watercraft application.

Results 1 - 25 of 41

Marine Alternator, 80 Amp, 12V, Internal Regulator, V-Belt, Natural, Each

Part Number: RRA-18-6849

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Estimated Ship Date: Dec 10, 2025 if ordered today

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Estimated Ship Date: Dec 10, 2025 if ordered today

Alternator, 105 Amp, 12 Volt, Serpentine, Internal Regulator, Natural, Mercruiser, Each

Part Number: RRA-18-6408

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Estimated Ship Date: Dec 8, 2025 if ordered today

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Estimated Ship Date: Dec 8, 2025 if ordered today

Marine Alternator, 70 Amp, 12V, Internal Regulator, V-Belt, Natural, Indmar, Each

Part Number: RRA-18-6288

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Estimated Ship Date: Dec 10, 2025 if ordered today

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Estimated Ship Date: Dec 10, 2025 if ordered today

Marine Alternator, 68 Amp, 12V, Internal Regulator, Natural, Mercury Marine, OMC, Pleasurecraft, Volvo Penta, Each

Part Number: RRA-18-5957-1

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Estimated Ship Date: Dec 10, 2025 if ordered today

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Estimated Ship Date: Dec 10, 2025 if ordered today

Marine Alternator, 75 Amp, 12V, Serpentine, Internal Regulator, Natural, Volvo Penta, Each

Part Number: RRA-18-5882

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Estimated Ship Date: Today

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Estimated Ship Date: Today

Marine Alternator, 65 Amp, 12V, Internal Regulator, Natural, Mercruiser, Each

Part Number: RRA-18-5960

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Estimated Ship Date: Dec 10, 2025 if ordered today

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Estimated Ship Date: Dec 10, 2025 if ordered today

Marine Alternator, 55 Amp, 12V, Internal Regulator, Serpentine, Black, Mercruiser, Each

Part Number: RRA-18-5967-1

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Estimated Ship Date: Dec 10, 2025 if ordered today

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Estimated Ship Date: Dec 10, 2025 if ordered today

Marine Alternator, 55 Amp, 12V, Internal Regulator, V-Belt, Black, Mercruiser, Each

Part Number: RRA-18-5966-1

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Estimated Ship Date: Dec 10, 2025 if ordered today

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Estimated Ship Date: Dec 10, 2025 if ordered today

Alternator

Part Number: RRA-18-6293

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Estimated Ship Date: Dec 10, 2025 if ordered today

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Estimated Ship Date: Dec 10, 2025 if ordered today

Alternator, 68 Amp, 12 Volt, V-Belt, Internal Regulator, Natural, Mercruiser, Each

Part Number: RRA-18-5956-1

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Estimated Ship Date: Dec 10, 2025 if ordered today

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Estimated Ship Date: Dec 10, 2025 if ordered today

Marine Alternator, 50 Amp, Bosch, Bukh, Leece Neville, Lester, Mahle, Paris Rhone, Valeo, Volvo Penta, Each

Part Number: RRA-18-59700

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Estimated Ship Date: Nov 10, 2025 if ordered today

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Estimated Ship Date: Nov 10, 2025 if ordered today

Marine Alternator, 70 Amp, 12V, Internal Regulator, V-Belt, Natural, Mercruiser, Each

Part Number: RRA-18-6298

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Estimated Ship Date: Dec 10, 2025 if ordered today

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Estimated Ship Date: Dec 10, 2025 if ordered today

Marine Alternator, 70 Amp, 12V, Serpentine, Internal Regulator, Natural, Mercury Marine, Each

Part Number: RRA-18-5929

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Estimated Ship Date: Dec 10, 2025 if ordered today

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Estimated Ship Date: Dec 10, 2025 if ordered today

Marine Alternator, 65 Amp, 12V, Internal Regulator, V-Belt, Natural, Mercruiser, Each

Part Number: RRA-18-5965

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Estimated Ship Date: Dec 10, 2025 if ordered today

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Estimated Ship Date: Dec 10, 2025 if ordered today

Marine Alternator, 65 Amp, 12V, Internal Regulator, Serpentine, Natural, Volvo Penta, Each

Part Number: RRA-18-5979

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Estimated Ship Date: Dec 10, 2025 if ordered today

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Estimated Ship Date: Dec 10, 2025 if ordered today

Marine Alternator, 130 Amp, 12V, Internal Regulator, Natural, Cummins, Each

Part Number: RRA-18-5982

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Estimated Ship Date: Dec 10, 2025 if ordered today

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Estimated Ship Date: Dec 10, 2025 if ordered today

Marine Alternator, 70 Amp, 12V, Internal Regulator, V-Belt, Natural, Mercruiser, Each

Part Number: RRA-18-5983

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Estimated Ship Date: Dec 10, 2025 if ordered today

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Estimated Ship Date: Dec 10, 2025 if ordered today

Marine Alternator, 50 Amp, 12V, Internal Regulator, Serpentine, Black, Mercury Marine, Each

Part Number: RRA-18-6840

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Estimated Ship Date: Dec 10, 2025 if ordered today

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Estimated Ship Date: Dec 10, 2025 if ordered today

Marine Alternator, 50 Amp, 12V, Internal Regulator, Serpentine, Natural, Mercruiser, Each

Part Number: RRA-18-6844

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Estimated Ship Date: Dec 10, 2025 if ordered today

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Estimated Ship Date: Dec 10, 2025 if ordered today

Marine Alternator, 40 Amp, 12V, Internal Regulator, V-Belt, Natural, Yanmar, Each

Part Number: RRA-18-6926

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Estimated Ship Date: Dec 10, 2025 if ordered today

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Estimated Ship Date: Dec 10, 2025 if ordered today

Marine Alternator, 65 Amp, 12V, Internal Regulator, V-Belt, Natural, Volvo Penta, Each

Part Number: RRA-18-6261

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Estimated Ship Date: Dec 10, 2025 if ordered today

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Estimated Ship Date: Dec 10, 2025 if ordered today

Marine Alternator, 70 Amp, 12V, Internal Regulator, Serpentine, Natural, Each

Part Number: RRA-18-6453

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Estimated Ship Date: Dec 10, 2025 if ordered today

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Estimated Ship Date: Dec 10, 2025 if ordered today

Marine Alternator, 50 Amp, 12V, Internal Regulator, Serpentine, Natural, Mercury Marine, Mercury Sport Jet, Each

Part Number: RRA-18-6454

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Estimated Ship Date: Dec 10, 2025 if ordered today

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Estimated Ship Date: Dec 10, 2025 if ordered today

Marine Alternator, 95 Amp, 12V, Internal Regulator, V-Belt, Natural, Chevy, LS, Each

Part Number: RRA-18-6451

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Estimated Ship Date: Dec 8, 2025 if ordered today

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Estimated Ship Date: Dec 8, 2025 if ordered today

Marine Alternator, 95 Amp, 12V, Internal Regulator, V-Belt, Natural, Each

Part Number: RRA-18-6452

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Estimated Ship Date: Dec 8, 2025 if ordered today

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Estimated Ship Date: Dec 8, 2025 if ordered today

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