Volvo Penta D6 Water Pump Impeller Replacement
A worn impeller on your Volvo Penta D6 starves the engine of cooling water and can overheat it in minutes. Below is the exact water-pump kit that fits this engine, a step-by-step video, and the parts you need to do the job yourself.
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Watch: how to replace it (step by step)
How to Replace Impeller – Volvo Penta D6
How to Change the Impeller on a Volvo D6
Tools Needed
- Low profile socket wrench
- Impeller puller
- Longer bolt for impeller puller
- Flat head screwdriver
- Car tire iron
- Boat soap
Safety
- Always shut off the seacock at the water inlet before starting work.
- Be cautious of water leakage when removing covers.
Steps
- Remove screws from the impeller location on the Volvo D6 engine.
- Use an impeller puller to remove the old impeller, using a longer bolt for better leverage.
- Inspect the removed impeller and check for any missing blades.
- If missing blades are found, locate them in the heat exchanger area by removing the oil filter and relevant hoses.
- Clean the area where the new impeller will be inserted with boat soap to aid installation.
- Insert the new impeller into the impeller hole, bending some blades to fit it inside.
- Use a car tire iron for leverage to push the impeller fully into place.
- Replace the o-ring on the impeller cap and apply boat soap for better sealing.
- Reassemble all removed parts in reverse order of disassembly.
- Open seacocks, turn on water, and start the engine to check for proper water flow.
Tips
- Use a low profile socket wrench for tight bolts in the back corner.
- Keep an oil reservoir towel nearby to catch any flakes from hoses when removing parts.
Which part do I need for my Volvo Penta D6?
For most D6 owners the part above (47-816814T) is the right choice.
Frequently asked questions
What water pump impeller fits a Volvo Penta D6?
The Volvo Penta D6 uses the impeller sold as 47-816814T. Confirm the number against your engine's model code and year plate before ordering.
How often should I replace the impeller on a Volvo Penta D6?
Replace the water pump impeller every 1-3 years or roughly every 200-300 running hours, whichever comes first — and sooner if you run in silty, sandy or shallow water.
What are the symptoms of a failing impeller on a Volvo Penta D6?
A weak or missing telltale stream, engine temperature climbing above normal, or an overheat alarm are the classic warning signs. A worn impeller can overheat and damage the engine within minutes, so don't delay the job.
Do I need the full water pump kit or just the impeller?
For the D6, fit the complete kit. The seals, O-rings, gasket and wear plate age alongside the impeller, and replacing them together is the reliable, do-it-once job.
How long does a water pump job take on a Volvo Penta D6?
For a competent DIYer it's typically a 1-2 hour job of medium difficulty. The step-by-step video above covers every step.
Related guides
- Volvo Penta D3 water pump / impeller
- Volvo Penta MD2030 water pump / impeller
- All Volvo Penta water pump guides
- Free Volvo Penta boat valuation
As an Amazon Associate we earn from qualifying purchases — at no extra cost to you. Prices and availability are shown at checkout. This guide is for reference; always follow the engine manufacturer’s service manual.