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Transmission Filler Plug

Critical For Operation

Transmission

Seals the transmission filler port, preventing fluid leaks.

The transmission filler plug seals the port where transmission fluid is added, preventing leaks and ensuring that the transmission remains properly lubricated and operates efficiently without losing fluid or pressure.

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Typical part cost
$10–$40🔒
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Typical labor cost
$50–$100🔒
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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
2/10

⚠️ Owners Often Notice

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

Transmission fluid leaks
Low transmission fluid

Related Services

Services commonly performed on or around this part.

Replace Transmission Filler Plug

No standard interval on file

Inspect Transmission Filler Plug

No standard interval on file