Volvo Penta 3589908 Seawater Pump Cam

Volvo Penta 3589908 Seawater Pump Cam

Part Number: 3589908
Brand: Volvo Penta
Official Part Type: Cam Seawater Pump
System: Raw Water Cooling Seawater Pump Assembly
Diagram Position: Internal cam within the seawater pump housing; works in conjunction with the impeller and pump cover

What This Part Does

This is the genuine Volvo Penta OEM cam for the seawater pump. The cam sits inside the pump housing and drives the impeller’s flex action, which is what moves raw water through the cooling circuit. A worn or damaged cam reduces impeller efficiency and can lead to overheating it is a small part with a direct effect on how well the pump performs.

Compatible Applications

• Volvo Penta D6 seawater pump cooling circuit
• Volvo Penta D11 seawater pump cooling circuit

Serial Number Notice: Fitment can vary by pump version, engine arrangement, and production range. Always confirm compatibility by engine model and serial number before ordering.

Related Parts & Cross-References

• Volvo Penta Seawater Pump 21380890 pump assembly this cam services
• Volvo Penta Seawater Pump 22063494 related pump assembly reference
• 3589907 related seawater pump service reference

Dimensions & Weight

Approximate weight: 0.175 kg. Exact installed dimensions should be verified against the Volvo Penta seawater pump schematic for your specific engine serial number.

Kit Contents

Single cam (3589908). Sold individually. The seawater pump impeller, cover, and housing are separate service items.

Service Interval

Inspect the cam whenever the seawater pump impeller is serviced typically every 2 years or 300 hours, or per the Volvo Penta maintenance schedule for your engine. Replace if wear, scoring, or deformation is found.

When to Replace

Replace this cam when pump service reveals wear, scoring, cracking, or loss of proper pump function. It is also worth replacing any time the impeller is changed, since a worn cam accelerates impeller wear and reduces pump output.

Installation Notes

Confirm the exact application before installation. Compare the new cam to the original during service. Inspect the pump housing, cover, impeller area, and related components so the replacement is installed into a clean, properly supported assembly.

Technical FAQ

Can I reuse the cam when replacing the impeller?
If the cam shows any wear, scoring, or flat spots, replace it at the same time as the impeller. Reusing a worn cam will shorten the life of the new impeller and may reduce pump output.

How do I know if this cam fits my engine?
Match by engine model and serial number using the Volvo Penta parts diagram for your specific seawater pump assembly. The pump version and production range both affect which cam is correct.

Parts Desk Insights

The cam is one of the most overlooked parts in a seawater pump service. Most customers replace the impeller and reuse the cam but if the cam has any wear or flat spots, the new impeller will wear faster and pump output drops. The best practice is to inspect the cam every time the impeller comes out, and replace it if there is any doubt. It is inexpensive insurance compared to a repeat pump service or an overheating call on the water.