Rocker/Valve Cover Gasket – Clean, Dry, Leak-Free Top End ️

This precision-molded rocker cover gasket seals the joint between the cam cover and cylinder head. It keeps engine oil inside where it lubricates cams and rockers, and keeps dust and moisture out. Built from heat‑resistant elastomer for long life, it resists hardening from high temps and blow‑by gases.

Why this part is needed

A tight seal prevents oil leaks, maintains correct crankcase ventilation, and protects ignition parts. A fresh gasket helps stabilize idle quality and preserves catalytic converter health by stopping oil burn-off.

How it works ️

The gasket compresses evenly between machined surfaces. Under torque, its ribs conform to micro‑imperfections, creating an oil-tight barrier around the perimeter and spark plug wells.

What happens if it fails ⚠️

Expect wet edges on the cover, oil smell, smoke on the manifold, and oil pooling in plug tubes causing misfire. Prolonged leaks lead to low oil level, noisy valvetrain, dirty engine bay, and possible fire risk on hot exhaust. Emission test failures can follow.

Tech highlights ✅

High-temp rubber, OE-style profile, stable under vibration. Install on a clean surface with proper torque; replace grommets if fitted. No sealant unless specified by service manual.

Compatibility

• Np300
• 240Sx