Top view of Daihatsu Hijet Radiator Cap, designed for S100P and S110P models, featuring a clear warning label and durable construction.
Front angle of Radiator Cap for Daihatsu Hijet Trucks (1994-1998), showing secure sealing design and pressure rating.
Underside view of Daihatsu Radiator Cap, emphasizing the high-quality rubber gasket for effective pressure regulation.
Detailed close-up of Daihatsu Hijet Radiator Cap with 0.9 bar rating, tailored for S100P and S110P cooling systems.
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Top view of Daihatsu Hijet Radiator Cap, designed for S100P and S110P models, featuring a clear warning label and durable construction.Front angle of Radiator Cap for Daihatsu Hijet Trucks (1994-1998), showing secure sealing design and pressure rating.Underside view of Daihatsu Radiator Cap, emphasizing the high-quality rubber gasket for effective pressure regulation.Detailed close-up of Daihatsu Hijet Radiator Cap with 0.9 bar rating, tailored for S100P and S110P cooling systems.

Radiator Cap - Daihatsu Hijet Truck - S100P, S110P Models - 1994-1998

Oiwa Garage
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Price:
$47.11
Stock:
In stock

Need help? Call or Text: 562-661-8862

Description

This Radiator Cap fits the Daihatsu Hijet Truck S100P, S110P (1994-1998). It seals the cooling system and holds it at the factory pressure so the coolant cannot boil over.

In Stock - ships from our California (USA) warehouse

Fast, reliable delivery - no overseas backorder wait.

Vehicle Fitment & Compatibility

Confirm your chassis code against the table below before ordering.

Daihatsu Hijet Truck S100P, S110P (1994-1998) - fitment
Make Daihatsu
Model Hijet Truck
Chassis Codes S100P, S110P
Years 1994-1998
Part Type radiator cap

100% Fitment Guarantee

Not sure about fit? Add your chassis/VIN number at checkout and we confirm it before we ship. If a part does not fit your Hijet, we exchange it or refund you in full.

Signs you need this radiator cap

  • Overheating or coolant pushed to the overflow
  • Coolant loss with no visible leak
  • A cap that fails a pressure test
  • A cracked or flattened seal

Features & Function

  • Holds the factory pressure to raise the boiling point
  • Sprung valve vents and draws back on cool-down
  • Protects the radiator, hoses, and pump seal

Installation Specifications

  • Difficulty: Easy.
  • Estimated time: about 5 minutes.
  • Required tools: No tools needed - it twists off by hand.

Oiwa Garage Tech Note

"If you fit a new cap and still lose coolant, pressure-test the system before blaming the head gasket - a tired cap and a weeping hose look identical from the seat."

Frequently Asked Questions

Does the pressure rating matter?

Yes - match the factory rating. A weak cap drops the boiling point, which causes overheating and coolant loss.

How do I confirm this fits my truck?

Match your chassis code (stamped on the VIN / data plate) to the fitment table above - S100P, S110P, 1994-1998.

Fitment verified by the Kei truck specialists at Oiwa Garage · Listing updated June 2026.

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