Coolant Filler Neck | Shaar’s Cars

Provides an opening for filling and sealing the cooling system with coolant.

The coolant filler neck is where coolant is added to the cooling system, and it usually includes a cap that maintains pressure and prevents leaks.

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Typical part cost

$20–$60🔒

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Typical labor cost

$50–$150🔒

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Typically lasts

100,000–200,000 mi

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Or about

7.0–10.0 years

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DIY difficulty

4/10

If the Coolant Filler Neck is starting to fail, these are the signs owners most commonly report before it gets worse:

Coolant leaks

Low coolant level

Engine overheating

Coolant overflow

Coolant smell

Loss of pressure

Services commonly performed on or around this part.

Replace Coolant Filler Neck

No standard interval on file

Inspect Coolant Filler Neck

No standard interval on file