Twin air of 1.8 bar Radiator capRef : TA00166A / 1066182

TWIN AIR Radiator Cap 1.8 bar — a small accessory with a big role in the cooling circuit. This cap, made by TWIN AIR, is designed for motorcycles and quads with a nominal circuit pressure of 1.8 bar. Compact and straightforward, it replaces the original cap on compatible models and helps maintain the intended pressure in the expansion tank.

• Brand: TWIN AIR
• Manufacturer Reference: 177900
• Nominal Pressure: 1.8 bar
• Category: Radiator (sealing / pressure part)
• Universe: Quad, Cross

Designed for use in demanding terrains (cross, motocross, quad outings), this cap integrates into the cooling circuit of the relevant engine sizes as long as the nominal pressure is 1.8 bar. It is advisable to check compatibility with your machine before installation and to inspect the condition of the seal to ensure proper sealing.

Examples of frequently equipped models:

• YAMAHA YZ 450 F (2026 - 450 cm³)
• SUZUKI RM-Z 450 (2026 - 450 cm³)
• KAWASAKI KX 450 (2026 - 450 cm³)

A simple yet essential spare part for maintaining circuit pressure: take it with you in your toolbox and replace a worn cap to keep your cooling system compliant with its nominal pressure.