valve covers on Infiniti G35

Average mileage: 96,333 (90,000–109,000)
2 model years affected: 2004, 2005
3 people reported this problem
1 person shared problem details
o-ring gaskets on the valve covers that go around the spark-plug tubes leaked oil into the back spark plugs on both sides of the motor. My husband is a ASE certified mechanic, so we bought gaskets for him to change them. When he removed the valve covers he realized the o-ring gaskets that go around the spark plug tubes cannot be replaced -- they are made to the valve covers! We had to buy a set of valve covers at $600+ to be able to put the motor back together. He's never seen a motor where the o-rings gaskets are made to the valve covers and cannot be replaced. BEWARE!
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