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Water Pump (N20 / B46 / B48) cost
Electric pump on the N20, mechanical pump and bracket on B46/B48. Real prices reported by owners on Reddit and BMW forums, with a link to every one.
Typical cost
Ranges are the lowest and highest prices in the table below. They are not estimates. Shop prices include parts and labor unless noted.
Every price we found
| Price | Where | Details | Source |
|---|---|---|---|
| $1,339 | Dealer | Dealer LABOR only, 4.4 hrs ($1,338.92), B46/B48 mechanical pump | [4] |
| $3,600 | Indy | Indy quote: pump plus coolant tank, coolant lines, turbo coolant lines and belt, G01 X3 B48 | [1] |
| $1,200 | Indy | Indy, F30 328i, Pierburg pump, incl. tax and supplies | [2] |
| $3,000 | Indy | Shop quote, 328i pump (plus OFHG leak found) | [2] |
| $2,383 | Indy | German shop quote: pump, thermostat and hose, 2014 428i (N20) | [3] |
| $980 | Indy | Third-party shop: pump, thermostat and hoses, 2014 528i (N20) | [3] |
| $165 | DIY | OEM pump from FCP Euro (B4x mechanical) | [4] |
| $200 | DIY | "Water pump alone is under $200 online for OEM genuine" | [1] |
- A BMW tech recommends the full pump + bracket assembly on B48s because the bracket gasket can leak; another says only replace it if cracked.
Which cars are affected
328i/428i/528i (N20), 330i/430i/530i, X3 30i (B46/B48).
Symptoms
- Overheating warning
- Coolant leak at the front of the engine (B48 pump/bracket)
- Low coolant message
- Electric fan running hard
Parts list
| N20 electric water pump | ECS TuningPelican PartsAmazon |
| B48 water pump (or pump + bracket assembly) | ECS TuningPelican PartsAmazon |
| N20 thermostat | ECS TuningPelican PartsAmazon |
| BMW coolant (blue) | ECS TuningPelican PartsAmazon |
Check fitment for your exact car (VIN) before ordering. Links may become affiliate links in the future.
Had this done? Share what you paid
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Common questions
How much does Water Pump (N20 / B46 / B48) cost at a BMW dealer?
Real dealer prices we found ranged $1,339 (1 data point, median $1,339).
How much does an independent shop charge for Water Pump (N20 / B46 / B48)?
Independent shop prices ranged $980 to $3,600 (5 data points, median $2,383).
Can I do Water Pump (N20 / B46 / B48) myself?
Owners who did it themselves reported $165 to $200 in parts and tools.
Which BMWs are affected?
328i/428i/528i (N20), 330i/430i/530i, X3 30i (B46/B48).
Related repairs
Sources
- G01 B48 X3 Water Pump Replacement Cost? (Reddit r/BmwTech)
- Shop charging me 3k for a Water pump (Reddit r/BMW)
- Reasonable water pump repair cost? (Reddit r/BmwTech)
- Mechanical Water Pump Labor - Number of Hours? (F30 Bimmerpost)
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