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Universal Parts 250cc Thermostat – 158 Degrees

Universal Parts 250cc Thermostat – 158 Degrees

$25.96

Part Number: 617839894375 SKU: 180-157 Category: Tag:

1 in stock

Part Number: 617839894375 SKU: 180-157 Category: Tag:

*Note: Free shipping to U.S. mainland (excludes AK, HI, and territories)
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Product Details

DESCRIPTION: Universal Parts 158° Thermostat Assembly for 250cc 4-stroke water-cooled engines. These motors are commonly found on street-legal scooters, ATVs, Dune Buggies, Go-Karts and much more. Also fits the VOG 260 BN169MM Engine commonly found in Linhai 250/260/300 Scooters and many other makes and 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 moreOuter Diameter (seal): 32mmThermostat Opens at 70°C (158° F)250cc 172mm 4-stroke, Boreem (BMS), CFMoto, Honda, Kazuma, Linhai 260, Roketa, SUNL, Tank, VOG 260, Various unlisted makes/models

Compatibility / Fitment

Use the fitment details below to confirm this part matches your scooter before ordering.

  • Engine Size: 250cc, 4-Stroke
  • Fits Models / Common Applications: Aprilia, CFMoto, Linhai, Roketa, and Yamaha and other compatible models may apply.
  • Fitment Notes: Universal Fit, Water Cooled

Fitment Guide: This compatibility information is based on manufacturer and supplier data. Listed models are common known applications and may not include every compatible scooter. If your scooter has multiple versions or production changes, confirm the correct match before ordering. Check photos, measurements, original part numbers, engine code, model, and related fitment information whenever possible.

Common Fitment Questions

Q: Will this fit a Aprilia?

A: This SKU is listed with Aprilia model fitment where the scooter also matches the listed engine or fitment notes.

Q: Is this for 250cc scooters?

A: This SKU is listed with 250cc engine-size fitment. Confirm exact model, year, and part style before ordering.

Additional information

Weight 0.3 lbs
Dimensions 2 × 2 × 1 in

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. 

Manufacturer Popular Compatible Models
Yamaha Majesty 250 (1999+), YP250, YP400
Aprilia Leonardo 250, Leonardo 300
Linhai Aeolus, Tank 260, ATV 260, VOG 260
Malaguti Madison 250, Password 250
Roketa / JCL MC-54 250B, Touring 250DE

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

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