MOOSE OFFROAD 212-1801 High Pressure 1.8 Bar Radiator Cap — Universal Japanese Fit

MOOSE OFFROAD — Advanced Boiling Point Elevation, High-Temp Silicone Seals, and Maximum Over-Boil Protection for Performance ATVs, UTVs, and Dirt Bikes

Push your engine to the limit without the fear of a coolant blowout with the MOOSE OFFROAD 212-1801 High Pressure Radiator Cap. This 1.8 Bar upgrade is a critical performance component for riders who demand peak cooling efficiency in extreme conditions. Designed for universal fitment on most Japanese-manufactured off-road machines, this cap is a must-have for high-horsepower builds, technical rock crawling, and competitive racing where airflow is limited and engine heat is at its peak.

By increasing the cooling system’s maximum operating pressure to 1.8 Bar (26.1 PSI), you significantly raise the boiling point of your coolant. This prevents the "vacuum-break" that causes standard caps to release pressure too early, allowing your radiator to maintain its cooling properties even during intense hill climbs or deep mud runs. The MOOSE OFFROAD 212-1801 features premium high-temperature, corrosion-resistant silicone seals that outperform factory rubber, providing an airtight, leak-proof seal that holds up under the most punishing heat cycles.

• Extreme 1.8 Bar Pressure Rating: Significantly raises the boiling point to prevent engine boil-overs in the most rigorous conditions.
• High-Performance Reliability: The most cost-effective insurance against overheating during low-speed, high-load riding.
• Premium Silicone Seals: Advanced high-temperature, corrosion-resistant silicone ensures a superior seal versus standard OEM units.
• Universal Japanese Interface: Engineered to fit the radiator necks of most Honda, Yamaha, Kawasaki, and Suzuki models.
• Black Finish: Durable, professional-grade finish that resists the elements and matches any machine’s aesthetic.
• Pro-Level Performance: Trusted by off-road racers and adventure tourers to keep engines cool when the trail gets tough.

Moto-House MX Pro Tip:

A 1.8 Bar cap like the MOOSE OFFROAD 212-1801 is the perfect "middle ground" for modern performance UTVs and high-revving 4-stroke dirt bikes. It offers a higher threshold than the 1.6 Bar while remaining safe for most high-quality radiator hoses. Crucial Safety Warning: Never attempt to open your radiator while the engine is hot. Wait for the system to reach room temperature before installing your new cap. For maximum efficiency, ensure your radiator fins are clear of mud and pair this cap with high-performance racing coolant.

Pressure Rating	Seal Material	Primary Compatibility
1.8 Bar (26.1 PSI)	High-Temp Silicone	Universal Japanese (Honda, Yamaha, Suzuki, Kawasaki)

FAQ Questions

Q) Will this fit my Polaris Ranger or RZR?
A) This cap is specifically designed for the radiator necks typical of Japanese brands. Please verify your radiator neck style, as most Polaris and Can-Am models utilize a different cap configuration.

Q) Is 1.8 Bar too high for my stock hoses?
A) Most modern UTVs and Dirt Bikes handle 1.8 Bar easily, provided the hoses are in good condition. If your hoses are old or soft, we recommend upgrading to MOOSE silicone radiator hoses for total peace of mind.

Moto-House MX – Choice of Champions – is located in Clermont/Montverde, FL. We are the best shop in Central Florida with lightning-fast shipping.