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
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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
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