Volvo Penta Starter Motor – OEM Part 21677590
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Volvo Penta Starter Motor – OEM Part 21677590
Part Number: 21677590
Brand: Volvo Penta
System: Engine Electrical / Starting System
Engine Family: Volvo Penta marine diesel or gasoline engines (confirm by engine model and serial number)
This is the genuine OEM starter motor for select Volvo Penta marine engines. The starter motor engages the flywheel ring gear to crank the engine on startup. A failed or weak starter is one of the most common reasons a marine engine won’t turn over — this direct OEM replacement restores reliable starting performance. Always confirm fitment by engine model and serial number before ordering.
Compatible Applications
- Select Volvo Penta marine diesel and gasoline inboard engines
- Confirm fitment using your engine model designation and serial number on the engine block ID plate
- Cross-reference against the Volvo Penta parts diagram for your engine before ordering
Technical Specifications
- Part Number: 21677590
- Type: Marine starter motor
- System: Engine electrical / starting system
- Construction: OEM marine-grade
- Weight: Approx. 4 kg (estimated)
Parts Desk Insights
Starter motors are most commonly ordered after a no-crank condition — the engine turns over slowly, clicks once, or doesn’t respond at all when the key is turned. Before ordering, it’s worth ruling out the battery and connections first, as a weak battery or corroded terminal can mimic a failed starter. If the battery checks out and the solenoid is clicking but the engine won’t crank, the starter motor is the likely culprit. This part is also ordered during full engine rebuilds or when a starter shows signs of heat damage from repeated failed start attempts. Confirm your engine serial number before ordering — Volvo Penta uses several starter variants across engine families and serial number breaks.
Service Interval
Starter motors do not have a fixed service interval — replace on failure or when cranking performance degrades noticeably. Inspect electrical connections and the solenoid annually as part of routine engine service.
Signs This Part Needs Replacement
- Engine cranks slowly or fails to turn over
- Single click when key is turned (solenoid engaging but motor not spinning)
- Grinding noise during cranking (worn drive gear or ring gear engagement)
- Starter spins but doesn’t engage the flywheel
- Heat damage or corrosion on the starter body
- Engine rebuild or full electrical system refit
Technical FAQ
Q: How do I know if it’s the starter and not the battery?
Test the battery voltage under load first. A fully charged battery should hold above 9.6V during cranking. If the battery is good and you hear a single click or no response, the starter motor or solenoid is the likely cause.
Q: Is the solenoid included?
This listing is for the starter motor assembly. Confirm whether the solenoid is integrated or separate for your specific application. See related parts below for solenoid options.
Q: Can I rebuild my existing starter instead of replacing it?
Rebuild kits are available for some Volvo Penta starters, but for marine applications where reliability is critical, OEM replacement is generally recommended over a rebuild on a high-hour unit.
Related Parts
Shipping information
In-stock and OEM parts: ship same or next business day.
Locally warehoused items: ship within 1-3 business days.
Special-order items: timeline confirmed after order.
Returns & warranty
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