OEM‑grade Cylinder Head Seal for Nissan/Infiniti Engines

This head gasket keeps your engine tight and efficient. It locks in combustion pressure, seals oil and coolant passages, and keeps temperatures stable. A correct seal means strong power, clean emissions, and long engine life. Ideal for head gasket replacement where factory-level reliability is required.

Why this part is needed

It maintains compression in each cylinder and prevents coolant or oil from escaping. Without a proper seal, the engine loses power, runs hot, and wastes fuel. This gasket protects the block and head from damage under daily heat cycles.

How it works

Using multi‑layer steel (MLS) with heat‑resistant coatings and precision fire rings, the gasket compresses between the block and cylinder head. Uniform clamp load from the head bolts keeps combustion, oil, and coolant separated, even under high pressure and temperature.

What happens if it’s broken ⚠️

Symptoms include overheating ♨️, white exhaust smoke, sweet smell, bubbling in the reservoir, misfires, milky oil, and coolant loss. Driving on a blown head gasket can warp the head, contaminate bearings, damage the catalytic converter, and lead to an expensive rebuild.

Tech tips for installation ✅

• Check head/block flatness and surface finish.
• Clean sealing faces; no abrasives that leave grooves.
• Use new torque‑to‑yield bolts and follow the exact torque/angle sequence.
• Flush coolant and change oil after the job.
• Verify correct gasket thickness and fire ring position.

Compatibility

• Q70/M Hybrid
• Qx60/Jx
• Qx70/Fx
• Q50
• Qx50/Ex