Left-Hand Exhaust Manifold Head Gasket

This high-temp sealing gasket sits between the cylinder head and the LH exhaust manifold on select Toyota trucks and SUVs. It keeps hot exhaust gases contained, protects the head face, and ensures accurate oxygen sensor readings for clean, efficient combustion.

Why you need it

Over time, heat cycles and vibration flatten or crack the seal. A fresh gasket restores proper sealing, stops exhaust leaks, and preserves torque on manifold fasteners. It’s essential after manifold removal, head work, or when chasing tick noises and fumes.

How it works

Made from multi-layer steel/graphite materials, it compresses under correct torque to form a gas-tight barrier. The fire ring supports extreme temperatures, while the layers absorb minor flange irregularities to maintain pressure and flow balance.

What happens if it’s bad

Expect cold-start ticking, sulfur or exhaust smell in the cabin, soot marks near the joint, reduced power, poor fuel economy, and possible check-engine lights due to false O2 readings. Prolonged leaks can warp the manifold, pit the head surface, and burn nearby components .

Compatibility

• 4Runner
• Land Cruiser
• Land Cruiser 100
• Sequoia
• Tundra