Toyota Land Cruiser Cylinder Head Gasket Mark 5— 1HZ, 1HD-T 4.2L Diesel | HZJ70/76/78/80/105 Series (1990–2024)

Cylinder Head Gasket — Grade 5 for Toyota Land Cruiser and Land Cruiser Prado (HZJ, HDJ-series), all powered by the 1HZ — 4.2L I6 Diesel.

This is the Grade 5 gasket — the thickest version available and the recommended choice when a direct replacement is needed without prior piston protrusion data. Piston protrusion must be measured at each cylinder before installation to confirm adequate clearance.

Gasket Selection by Piston Protrusion

1HZ engine: Grade 5 — use for piston protrusions between 0.556 – 0.655 mm

1HZ-T / 1HD-T engines: Grade 5 — use for piston protrusions between 0.626 – 0.725 mm

Complete the Job Right

A proper head gasket replacement also requires new head bolts and a full top-end gasket set (Valve grind version or complete engine set). See related products below.

Fitment

Toyota Land Cruiser Prado

• HZJ70, HZJ70V, HZJ71, HZJ71V, HZJ73HV, HZJ73V, HZJ74K, HZJ74V, HZJ75, HZJ76K, HZJ76V, HZJ77HV, HZJ77V, HZJ79

Toyota Land Cruiser

• HZJ105L, HZJ105R
• HZJ70LV, HZJ70R, HZJ70RV, HZJ71L, HZJ71R, HZJ73LV, HZJ74L
• HZJ75LP, HZJ75LV, HZJ75RP, HZJ75RV
• HZJ76L, HZJ76R, HZJ78L, HZJ78R, HZJ79L, HZJ79R
• HZJ80R
• HDJ81

Engine Compatibility

• 1HZ — 4.2L I6 Naturally Aspirated Diesel
• 1HD-T - 4.2L I6 Turbocharged Diesel

Toyota part numbers: 11115-17010-05 / 11115-17040-05