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BMW N55 Coolant Expansion Tank Replacement cost
Coolant Expansion Tank Replacement on a BMW with the N55 engine typically costs $400 at an independent shop or $100–$115 in parts DIY, based on 3 real owner-reported prices.
Last updated · 3 reported prices from 3 cited sources
Cracked expansion tank, coolant flange, turbo coolant line leaks. These are only the prices reported for the N55. See the general F30 Coolant Expansion Tank & Coolant Lines page for every BMW model.
Limited data: 3 reported prices from 3 sources, and no dealer price found yet. Use the general repair page for more context.
Expansion tank prices for the N55: two parts prices (a forum comment and an ECS Tuning listing) and an independent shop quote in New Jersey for an F10.
Typical cost
Ranges are the lowest and highest real prices in the table below. Estimates are shown but left out of the ranges. Shop prices include parts and labor unless noted.
Every N55 price we found
| Price | Where | Details | Source |
|---|---|---|---|
| $100 | DIY | Expansion tank part is "like a $100 part and an hour work" | [1] |
| $400 | Indy | Expansion tank incl. labor, indy quote in NE New Jersey, F10 N55 (2023) | [2] |
| $115 | DIY | New N55 expansion tank at ECS Tuning ($115.33, 2018) | [3] |
Symptoms
- Low coolant warning
- Sweet coolant smell, pink/blue crust around the tank seams or hoses
- Coolant drips under the front of the car
- Overheating in severe cases
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Common questions
How much does BMW N55 Coolant Expansion Tank Replacement cost?
Coolant Expansion Tank Replacement on a BMW with the N55 engine typically costs $400 at an independent shop or $100–$115 in parts DIY, based on 3 real owner-reported prices.
How much does an independent shop charge for BMW N55 Coolant Expansion Tank Replacement?
Independent shop prices for the N55 ranged $400 (1 data point).
Can I do Coolant Expansion Tank Replacement on my N55 myself?
Owners who did it themselves or bought parts reported $100 to $115.
How long does Coolant Expansion Tank Replacement take?
Tank: about an hour with basic tools, per an owner (source 4). Turbo coolant line: under an hour DIY with no turbo removal, per an owner (source 1).
Sources
- N55 Maintenance Prices (Reddit r/F30)
- N55 COOLANT LEAK DRIVER SIDE (BimmerFest)
- N55 coolant expansion tank leak (1Addicts)
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