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Sierra Marine

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.

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Results 1 - 8 of 8

Sierra Marine Alternators 18-5966-1

Sierra Marine Alternators 18-5966-1

Sierra Marine Alternators 18-5966-1

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

Part Number: RRA-18-5966-1

Not Yet Reviewed

Estimated Ship Date: Oct 28, 2025 if ordered today

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Estimated Ship Date: Oct 28, 2025 if ordered today

Sierra Marine Alternators 18-5957-1

Sierra Marine Alternators 18-5957-1

Sierra Marine Alternators 18-5957-1

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

Part Number: RRA-18-5957-1

Not Yet Reviewed

Estimated Ship Date: Oct 29, 2025 if ordered today

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Estimated Ship Date: Oct 29, 2025 if ordered today

Sierra Marine Alternators 18-5967-1

Sierra Marine Alternators 18-5967-1

Sierra Marine Alternators 18-5967-1

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

Part Number: RRA-18-5967-1

Not Yet Reviewed

Estimated Ship Date: Oct 28, 2025 if ordered today

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Estimated Ship Date: Oct 28, 2025 if ordered today

Sierra Marine Alternators 18-5960

Sierra Marine Alternators 18-5960

Sierra Marine Alternators 18-5960

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

Part Number: RRA-18-5960

Not Yet Reviewed

Estimated Ship Date: Oct 28, 2025 if ordered today

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Estimated Ship Date: Oct 28, 2025 if ordered today

Sierra Marine Alternators 18-5983

Sierra Marine Alternators 18-5983

Sierra Marine Alternators 18-5983

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

Part Number: RRA-18-5983

Not Yet Reviewed

Estimated Ship Date: Oct 27, 2025 if ordered today

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Estimated Ship Date: Oct 27, 2025 if ordered today

Sierra Marine Alternators 18-5965

Sierra Marine Alternators 18-5965

Sierra Marine Alternators 18-5965

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

Part Number: RRA-18-5965

Not Yet Reviewed

Estimated Ship Date: Oct 28, 2025 if ordered today

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Estimated Ship Date: Oct 28, 2025 if ordered today

Sierra Marine Alternators 18-6844

Sierra Marine Alternators 18-6844

Sierra Marine Alternators 18-6844

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

Part Number: RRA-18-6844

Not Yet Reviewed

Estimated Ship Date: Oct 28, 2025 if ordered today

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Estimated Ship Date: Oct 28, 2025 if ordered today

Sierra Marine Alternators 18-6298

Sierra Marine Alternators 18-6298

Sierra Marine Alternators 18-6298

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

Part Number: RRA-18-6298

Not Yet Reviewed

Estimated Ship Date: Oct 28, 2025 if ordered today

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Estimated Ship Date: Oct 28, 2025 if ordered today

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