Intake Manifold Seal for Infiniti/Nissan Engines

This intake manifold gasket keeps the air path sealed between the manifold and cylinder heads. It prevents unmetered air from entering, so the ECU gets correct readings and your engine delivers smooth idle, crisp throttle, and proper fuel economy. Built from heat‑resistant, multi‑layer material, it resists warping and oil, and holds torque after many heat cycles.

Why this part is needed

Any time the manifold is removed—cleaning, injector service, valve work—this seal should be renewed. A fresh gasket ensures stable vacuum, correct AFR, and strong low‑end torque.

How it works

Under clamp load, the gasket conforms to the manifold and head surfaces, creating a gas‑tight barrier. It channels metered air to each runner while isolating heat to keep intake temps lower ⚙️.

If the gasket fails

Expect rough idle, hesitation, higher fuel use, lean codes (P0171/P0174),whistle noises, and even misfires. Prolonged leaks can overheat valves and damage catalysts ⚠️.

Install tips

Clean mating faces, check flatness, seat alignment dowels, and torque in a criss‑cross pattern to spec. Do not reuse crushed seals.

Compatibility

• Qx50/Ex
• Q70/M
• Q50
• Q60/G Coupe
• Q40/G Sedan
• M35/45
• Q70/M Hybrid
• Qx70/Fx
• Q60/G Convertible
• Q70(201802-)Lam
• G37 Sedan
• M