Universal Parts 250cc Thermostat - 158°F (70°C) for 172mm

Universal 250cc Thermostat Assembly - 158 °F (70 °C)

Keep your liquid-cooled engine running at the ideal operating temperature with this high-quality Universal Parts 158 °F Thermostat. Designed for 250cc 4-stroke water-cooled engines, this unit ensures your cooling system opens at precisely 70 °C to prevent overheating and maintain engine longevity.

Technical Specifications

• Opening Temperature: 70 °C / 158 °F (Optimized for street and off-road cooling).
• Outer Diameter: 32mm (with seal).
• Engine Compatibility: 172mm 4-stroke liquid-cooled engines.
• Direct Fit: Replaces factory thermostats on VOG 260 and BN169MM engines.

Extensive Vehicle Fitment

This thermostat is a direct replacement for Linhai 250/260/300 platforms and is used by dozens of European and Chinese brands that use 250cc+ 4-stroke water-cooled engines. These motors are commonly found on street-legal scooters, ATVs, Dune Buggies, Go-Karts, and more. 

Why Replace Your Thermostat?

• Prevent Overheating: A stuck-closed thermostat will cause rapid engine failure and warped heads.
• Improve Efficiency: A stuck-open thermostat prevents the engine from reaching operating temp, leading to poor fuel economy and carbon buildup.

Mechanic's Note: When replacing your thermostat, always inspect your coolant hoses and radiator cap for signs of aging. We recommend flushing the system with fresh 50/50 distilled water and coolant to ensure no air pockets remain in the head.

SKU: 180-157 | Fits various Boreem (BMS), CFMoto, Honda clones, and Kazuma 250cc models.

Some of the models and brands using this engine include the Aprilia Leonardo 250, Aprilia Leonardo 300, Benelli Velvet 250, Diamo Turista, Italjet Jupiter 250, JCL, VOG 260, Linhai Aeolus, Linhai ATV 260, Linhai Tank 260, Tank Touring 250DE, Malaguti Madison 250, Malaguti Password 250, MBK Kilibre 300, MBK Skyliner 250, Renault Kouranos 250, Roketa MC-54 250B, Xingyue VOG 260, Yamaha Majesty 250 (mod. 1999), Yamaha Majesty 250 and many more

250cc 172mm 4-stroke, Boreem (BMS), CFMoto, Honda, Kazuma, Linhai 260, Roketa, SUNL, Tank, VOG 260, Various unlisted makes/models