Toyota Genuine Timing Belt Idler Tension Spring 1HZ 1HDT 1HDFT 1PZ

Genuine Toyota timing belt idler tension spring to suit selected Toyota diesel engines.

Designed to maintain correct timing belt tension on spring-style idler systems.

This genuine Toyota idler tension spring is used in the timing belt tensioner assembly on selected Toyota diesel engines using the early spring-style timing setup.

The spring helps maintain proper tension on the timing belt idler pulley to ensure:

• Correct timing belt operation
• Stable belt tension
• Reduced belt vibration
• Reliable timing system performance

Over time, tension springs can weaken from:

• age
• heat cycles
• engine vibration
• long service intervals

Replacing worn timing tension components is important during timing belt servicing to maintain long-term reliability.

Important Details

• Genuine Toyota part
• Timing belt idler tension spring
• Sold individually
• OEM direct replacement

Toyota Part Numbers:

• 90507-27001
• 90507-27003  

Vehicle Compatibility

Suits selected Toyota diesel engines including:

• 1HZ
• 1HZT
• 1HDT
• 1HDFT
• 1PZ

Common applications include:

• LandCruiser 70 Series
• LandCruiser 80 Series
• Toyota Coaster

Typically suits early spring-style timing tensioner setups prior to hydraulic tensioner systems. 

Common Questions

What does this spring do?

Maintains tension on the timing belt idler pulley assembly.

Should this be replaced during a timing belt service?

Recommended when servicing older timing systems or replacing timing components.

Does this suit hydraulic tensioner engines?

Generally suits earlier spring-style tensioner systems.

Is this a genuine Toyota part?

Yes — genuine Toyota OEM timing component.