Engine Rocker/Valve Cover Assembly for Nissan

This top cover seals the cylinder head, keeps engine oil inside, and channels crankcase vapors to the PCV system. Built for OE fit, it uses heat‑resistant sealing and baffles to control oil splash and protect ignition components. Perfect for restoring a dry, clean, and quiet top end.

Why this part is needed ️

It prevents oil leaks, keeps dirt out of the valvetrain, and maintains proper crankcase ventilation. A healthy cover preserves spark plug wells, reduces odors, and supports stable idle and emissions.

How it works

Bolted to the head with a molded gasket and grommets, the cover seals around camshafts. Internal baffles separate oil mist; vapors route to the intake via PCV passages. Correct torque ensures a flat, uniform seal.

What happens if it’s damaged ⚠️

Cracks or hard gaskets cause oil leaks, burning smells, smoke on exhaust, oil in plug tubes (misfire, rough run),vacuum leaks (high/unstable idle),and increased oil use. Neglect can foul O2 sensors and catalytic converters, and oil on a hot manifold is a fire risk.

Tech tips ️

Clean mating surfaces, replace gasket and grommets, inspect PCV hose, and torque in sequence. After install, check for seepage and re‑verify torque once heat cycled.

• Murano
• Quest
• Teana
• Maxima
• Murano Crosscab
• Elgrand
• Pathfinder