Radiator Cap - Twin Air - 177900
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eBayCap Radiator TWIN AIR 1,8 bar-177900 for Moto Spare Parts Accessories Pieces
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Product Information
Full details
The Twin Air 1.8 bar radiator cap is an essential upgrade for off-road motorcycle enthusiasts and competitive racers who demand peak thermal performance from their cooling systems. By raising the boiling point of the engine coolant, this cap effectively prevents overheating and minimizes fluid loss during high-stress riding conditions; however, users should ensure their cooling system components are in good condition to handle the increased internal pressure before installation.
All features
| Model Part Number | 177900 |
|---|---|
| Brand | Twin Air |
Extended Product Information
FAQs
What is the benefit of a 1.8 bar cap over a standard cap?
A 1.8 bar cap raises the pressure in the cooling system, which increases the boiling point of the coolant, helping to prevent boil-overs in extreme conditions.
Will this fit any motorcycle?
It fits motorcycles with standard radiator necks, but you should verify your bike's cooling system specifications to ensure it is designed to handle a 1.8 bar rating.
Can I use this on an older bike?
Yes, but ensure your radiator hoses and gaskets are in good condition, as the higher pressure may expose weak points in aging components.
How often should I replace the radiator cap?
If you notice the rubber seal is cracking, the spring feels loose, or if you experience consistent coolant loss, the cap should be replaced immediately.
Should I install this while the engine is hot?
Never remove or install a radiator cap while the engine is hot, as the cooling system is pressurized and can cause severe burns from escaping steam.
Troubleshooting
Coolant leaking from the radiator cap area
Ensure the cap is tightened fully and check the radiator neck for any burrs or damage that may prevent a proper seal.
Engine temperature rising rapidly
Check coolant levels and ensure the radiator fins are clear of mud and debris; the cap cannot compensate for insufficient coolant fluid.
Pros and Cons
Pros
- Increases boiling point for better heat management
- Reduces coolant loss during aggressive riding
- Constructed from durable, heat-resistant materials
- Reliable sealing mechanism
Cons
- Increases pressure on older or brittle cooling hoses
- Requires proper cooling system inspection before use
- Not intended for engines with low-pressure cooling system requirements
Setup, Compatibility & Care
Installation: Ensure the engine is completely cool before removing the stock radiator cap. Simply twist the existing cap counter-clockwise to remove, and replace it with the Twin Air cap, twisting clockwise until it clicks into the locked position.
Compatibility: This cap is designed for high-performance off-road motorcycles that utilize a standard-size radiator neck compatible with 1.8 bar specifications. Always check your service manual to confirm if your cooling system is designed to operate at this pressure rating.
Care: Periodically inspect the rubber seals on the underside of the cap for cracks or debris. If the rubber appears hard or brittle, it is time to replace the unit to maintain a proper vacuum seal.