truck fan clutch howo A7 420 horsepower fan clutch one year warranty manufactory produce 1. Application for HOWO2. Improve the efficifiency of engine system and the rate of fuel use. 3. Save 6-10% wastage. Allow the engine to work at the designed operating temperature. Prolong the life the engine. Reform exhaust emission. 4. We provide best quality products at best prices, completely sizes can ...