Reviews of OEM Mazda valve stem seal

PR Score ?

Not enough data to calculate the score

Missing 7 reviews

10 votes

Average rating ?

3.0

Oily residue:

2.0

Smell:

1.0

Smoke:

1.0

3 reviews

Description

OEM Mazda

Japan

Reviews

Relevant

New

Useful

OEM Mazda › Valve stem seal

zkulka 9 Dec 2025, 04:03

Rating 5.0

On my 2021 Mazda6, I took a video of the low oil warning, then selected the maintenance interval screen to show it was 2500 miles from the next oil change.

Pros: completely painless, managed under warranty

Cons: horrible dealership experience

Vehicle: Mazda

Mileage: 4023 km

OEM Mazda › Valve stem seal

hgrunt 3 Oct 2025, 23:17

Smoke:
Smell:
Oily residue:

Rating 1.0

Valve stem steals were leaking so it wouldn't pass california smog

Cons: leaking, failed smog

Vehicle: Mazda MPV

Mileage: 257494 km

OEM Mazda › Valve stem seal

FirmAddition 8 Nov 2023, 09:48

Oily residue:

Rating 3.0

I got a ‘21 CX-9 and found out this model has a valve stem seal issue which causes the vehicle to burn oil around 4K after the oil change. Mazda has service bulletin out for this but I have not noticed my oil level drop so far.

Pros: service bulletin available

Cons: burn oil

Vehicle: Mazda

Mileage: 4000 km

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Avg. rating

2.0

1 review

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What we know about OEM Mazda valve stem seal

The brand is registered in Japan.

In March 2026, PartReview does not yet have a formed opinion of OEM Mazda valve stem seal. You can help by adding a review for OEM Mazda valve stem seal.

Currently there are 3 reviews and 10 votes. Average rating — 3 out of 5. Vote balance: 5 up, 5 down.

Users also evaluated the qualities of OEM Mazda valve stem seal:

Smoke - blue smoke on startup or after idling, typical of oil burning - rated negatively. 1 point out of 5.
Smell - burning oil odor from the exhaust, unpleasant and unhealthy - rated negatively. 1 point out of 5.
Oily residue - oily soot at the tailpipe tip, hinting at oil burning - rated negatively. 2 points out of 5.

Valve stem seal OEM Mazda in car-specific ratings

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