Genuine Toyota Timing Cover Gasket Rubber 1HZ LandCruiser HZJ75 HZJ78 HZJ79 HZJ105 (Late Model)

Genuine Toyota rubber gasket for the timing belt cover on 1HZ diesel engines.

Seals the plastic timing cover to protect the timing belt from dust and debris.

Seals the timing belt cover — protects the belt from dust and debris.

Overview

This genuine Toyota rubber gasket is fitted to the outer timing belt cover on later 1HZ engines.

Its role is to:

• Seal the timing cover
• Prevent dust and debris entering the timing belt area
• Maintain proper protection of timing components

This gasket suits engines fitted with a hydraulic timing belt tensioner. 

Over time these gaskets:

• Go hard
• Flatten
• Lose sealing ability

When that happens, you may notice:

• Dust inside timing cover
• Loose or poorly sealed cover
• Increased contamination risk

Replacing the gasket restores proper sealing of the timing cover.

Vehicle Compatibility

• Toyota LandCruiser HZJ75
• Toyota LandCruiser HZJ78
• Toyota LandCruiser HZJ79
• Toyota LandCruiser HZJ105
• Engine: 1HZ 4.2L Diesel
• Late models with hydraulic tensioner (approx. 1998 onwards)  

Common Questions

Does this stop oil leaks?

No — this is for the outer timing cover only.

What does it actually seal?

The plastic timing belt cover.

When should I replace it?

During timing belt service or if the cover seal is worn.

Is this engine-specific?

Yes — suits later 1HZ engines only.