2008–2014 Infiniti G37
Save $290 by doing it yourself! Shop cost: $400
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| Part Name | Part Number | Price | Buy |
|---|---|---|---|
| Valve Cover Gasket Set | 12345-6N000 | $50.00 | |
| Spark Plug Tube Seals | 12345-6N001 | $20.00 | |
| Intake Manifold Gasket | 12345-6N002 | $30.00 | |
| RTV Silicone Sealant | 12345-6N003 | $10.00 |
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Follow these steps carefully
Work on a cool engine. On the Infiniti G37, remove engine beauty covers, intake tubes, or coil packs that block valve-cover bolts. Label ignition coils and wiring so they return to the same cylinders. Wear gloves and eye protection.
Detach PCV hoses, breather lines, and any ground straps bolted to the cover. Cap open intake ports if needed so debris cannot fall in.
Loosen valve-cover bolts evenly in a crisscross pattern. Gently pry the cover free if RTV holds the corners — do not bend the cover or gouge the head. Lift straight up past the camshafts or spark-plug tubes.
Remove all old gasket material and RTV from the head and cover with plastic scrapers and solvent. Clean spark-plug tube seals if separate. Ensure bolt holes are clear of oil so torque readings stay accurate.
Fit the new gasket (and tube seals) dry or with the sealant dots the manual specifies at T-joints. Set the cover in place, start all bolts by hand, then torque in sequence to spec — overtightening cracks covers and causes new leaks.
Reconnect coils, harnesses, and PCV hoses. Start the engine and inspect the gasket perimeter and tube seals for oil seepage. After a heat cycle and short drive, recheck torque visually (do not routinely re-torque unless specified) and wipe any seepage for a clean baseline.
Test your repair before closing everything up. If something doesn't work right, double-check your steps.
⚠️ Common Mistakes to Avoid
