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Cummins 3963808 Pressure Relief Valve/Pressure Reducing Valve/Pressure Relief Valve for 5.9L Dodge and ISC/ISL Engines
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| Part Number | 3963808 |
| Product Type | Pressure Relief Valve/Pressure Limiting Valve |
| Applicable System | Common Rail Fuel System |
| Applicable Engine Displacement | 5.9L, 8.3L, 8.9L |
| Material | Steel |
| Weight | 363.8 lb (approx. 165 kg) |
| Installation | Fuel common rail pipe |
| Function | Limit fuel rail pressure to prevent overpressure damage |
Manufacturer No.
3963808
OEM Part No.
3963808
Engine Part No.
Cummins 5.9LCummins ISCCummins ISLCummins ISL9Cummins ISLECummins 6C 8.3Cummins B3.3Cummins ISB
Interchange No.
3947799396381239638151110010020111001000711100100170506298734727551103040050
Fitment Vehicles
Dodge Ram 2500 2003-2007Dodge Ram 3500 2003-2007MAN TGAMAN TGLMAN TGMMAN Lion's City
Fuel System - Industrial Encyclopedia
Cummins OEM 3963808 Relief Valve (Pressure Limiting Valve), suitable for Cummins 5.9L, ISC, ISL, ISLE engines, as well as Dodge Ram 2500/3500 models (2003-2007). This valve plays a pressure regulation role in the common rail fuel system, preventing component damage due to excessive oil pressure. Replacement part numbers include 3947799, 3963812, 3963815, 1110010020, etc. Made of high-quality materials, ensuring reliable performance and long service life.