My 5.5 year old CX-5, with full service history, needs a new engine (at a cost of £9k) because the head gasket completely went without warning.
Cons: head gasket failure
Vehicle:
Mazda
Reviews of OEM Mazda head gasket
PR Score
?
Shows the percentage of positive votes. Learn more in the help
22 votes
Average rating
?
The average rating is calculated only from review ratings, without votes
Description
Share:
OEM headgaskets are better, unless you are trying to get a 85.5mm bore.
Pros: better performance
Vehicle:
Mazda
OEM should be fine.
Pros: should be fine
Vehicle:
Mazda
Oem replacement is fine. An upgrade is only required if you're going for crazy numbers. Don't worry about it below 250 horse at the wheels.
Pros: fine for up to 250hp
Vehicle:
Mazda
Stock head gasket is fine for over 250bhp.
Pros: fine for high power
Vehicle:
Mazda
Oem. The head gasket is way stronger than the rods and transmission.
Pros: way stronger
Vehicle:
Mazda
The Mazda OEM head gasket is strong enough to reliably handle boost. Unless you're making crazy high power, you don't need the upgrade.
Pros: strong enough for boost
Vehicle:
Mazda
Write your review about head gasket OEM Mazda
Help others - share your experience with this part.
Other head gasket
Popular OEM Mazda parts
What we know about OEM Mazda head gasket
The brand is registered in Japan.
In March 2026, PartReview does not yet have a formed opinion of OEM Mazda head gasket. This part is not in the ranking due to insufficient reviews. You can help by adding a review for OEM Mazda head gasket.
Currently there are 7 reviews and 22 votes. Average rating — 3.6 out of 5. Vote balance: 17 up, 5 down.
Users also evaluated the qualities of OEM Mazda head gasket:
- Overheating - the temperature gauge climbs and fluctuates - rated positively. 3.6 points out of 5.
- White smoke - thick white steam from the exhaust, especially when cold - rated positively. 5 points out of 5.
- Milky residue - light-colored sludge under the oil cap - rated positively. 5 points out of 5.
Head gasket OEM Mazda in car-specific ratings
Unfortunately, there are no car-specific ratings for this part yet. You can help by adding a review and specifying your car.