Originals

Make Number Name Availability Processing, days Price  
Nissan
140360W000 
GASKET-EXHAUST MANIFOLD,A
6
Express · 24h
9.88$
 

Exhaust Manifold Sealing Gasket

This high-temp sealing gasket sits between the cylinder head and the exhaust manifold. It locks in hot gases, keeps noise down, and protects sensors for smooth engine performance. Built from heat-resistant layered steel/graphite, it handles extreme heat cycles and prevents blow-by for a clean, quiet drive .

Why this part is needed

A tight seal maintains exhaust flow to the catalytic converter, correct O₂ sensor readings, proper backpressure, and good fuel economy. It also stops fumes from entering the cabin and shields nearby parts from heat .

How it works

When the manifold is torqued, the gasket compresses to fill tiny surface imperfections. It stays elastic across heat cycles, keeping a gas-tight joint and preventing warping or soot leaks.

What happens if it’s damaged

  • Ticking sound on cold start, louder under load
  • Exhaust smell, visible soot at the flange
  • Poor power, higher fuel use, possible check engine light
  • Risk of burnt valves, warped manifold, melted wiring ⚠️

Installation tips

Clean both faces, check flatness, use new studs/nuts, torque from center outward to spec, and avoid sealant. Recheck after first heat cycle for best long-term seal.

Compatibility

  • Qx4