Exhaust Brake Proportional Control Valve 1856309 / 2021084 for Scania P280, P380, G410, R450 & T480 Trucks and Scania F-Series & K-Series Buses (2003–2008) Dual H-Position Selector Housing supplied as a direct-fit replacement

supplied as a direct-fit replacement for Isuzu rear axle final drive systems

mounts into OEM exhaust port and connects to factory wiring harness without modification

4709 or 4311

hard starting

Exhaust Brake Proportional Control Valve 1856309 / 2021084 for Scania P280, P380, G410, R450 & T480 Trucks and Scania F-Series & K-Series Buses (2003–2008) Dual H-Position Selector Housing supplied as a direct-fit replacementProduct Overview Part Name: Exhaust Brake Proportional Control Valve Part Numbers: 1856309 2021084 Vehicle Compatibility: Designed for Scania P280, P380, G410, R450 & T480 trucks and Scania F , K and N Series buses manufactured between 2003 and 2008 with engine exhaust braking systems. Configuration: Heat resistant proportional valve engineered to control exhaust brake pressure precisely. Function: Enhances engine braking efficiency, improves downhill