Mercedes-Benz R-Class W251 Water Pump
New, used, or aftermarket – from sellers across Europe.
Parts availability
This part appears to be widely available.
Estimated price range
Widely available Limited Hard to find
Last updated: 08.10.2026, 10:46
Water Pump for your Mercedes-Benz R-Class?
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Prices from recent listings
| Source | Condition | Price (approx.) | Last seen |
|---|---|---|---|
| eBay | New | 73.14 € | 2026-10-08 |
| eBay | New | 134.68 € | 2026-10-08 |
| eBay | New | 77.82 € | 2026-08-05 (older price) |
| eBay | New | 108.22 € | 2026-08-05 (older price) |
| eBay | New | 115.19 € | 2026-08-05 (older price) |
| eBay | New | 118.61 € | 2026-08-05 (older price) |
| eBay | New | 127.32 € | 2026-08-05 (older price) |
| eBay | New | 143.87 € | 2026-08-05 (older price) |
Indicative values only – current prices may vary.
Price comparison: Water Pump
Current median for the Mercedes-Benz R-Class W251: 122.96 €.
Median across all car models: around 66 €. This model is 85% above that and more expensive than 80% of the models compared.
Median across Mercedes-Benz car models: around 86 €. This model is 40% above that and more expensive than 75% of the models compared.
Compares the medians of the most recent offers found for each model.
Find Mercedes-Benz R-Class W251 parts online
hank's free AI report searches specialized shops for Mercedes-Benz R-Class W251 parts, including hardi-automotive, LLLParts & Dronsfields.
About this part
The water pump on your R-Class W251 circulates coolant between the engine and radiator. A failing pump causes overheating, leaks and in severe cases engine damage – timely replacement is essential.
Frequently asked questions
What should I check when buying a replacement water pump for the Mercedes-Benz R-Class?
Match the exact engine code and the model year of your R-Class W251. Check whether the gasket and thermostat housing are included, as these are commonly replaced together.
Should I replace the timing belt and water pump together?
If the timing belt drives the water pump, yes. The labour to access both overlaps significantly, making it far more cost-effective to replace them at the same time.
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