1403621U00 Nissan GASKET MANIFOLD, Price: 52.29$, Weight: 0.87kg

Nissan Exhaust Manifold Seal — OE-Grade Performance

This high-temp manifold gasket keeps the joint between the cylinder head and exhaust manifold gas-tight. You need it to block blow-by, stabilize backpressure, and keep oxygen sensor data accurate for clean idle, strong torque, and long catalyst life. It also cuts cabin fumes and exhaust drone for a quieter, safer drive .

How it works

Built from multi-layer steel with a heat-resistant coating, it compresses under the correct torque to fill micro-imperfections in both flanges. Fire rings guard the port edges from flame erosion, while layered steel handles thermal expansion without losing clamp load . The anti-stick surface helps clean removal during future service.

What happens if it’s broken

Expect a sharp tick on cold start, soot at the ports, sulfur smell, and loss of low-end power. The ECU may enrich fuel, raising trims and emissions. Long leaks can warp the manifold, burn valves, overheat wiring, and damage nearby rubber boots.

Tech tips

Clean both faces, check flatness, use new studs/nuts, and tighten center-out in stages. Re-torque after the first heat cycle. Install dry unless the maker specifies sealer. OE thickness ensures proper fit with stock manifolds and most headers ✅.

Compatibility

• Cefiro
• Laurel
• Skyline
• Cedric/Gloria
• Stagea
• Laurel Altima
• Leopard