Genuine Cummins 3963808 Fuel Pressure Relief Valve | ISC ISL9 ISLe
SKU 3963808
In stock: 2 available · Ships from Kelowna BC
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Match the listed SKU and verified cross-references to your current part number. If fitment is not listed, send AIM Rentals the machine details and current part number before ordering.
Genuine Cummins 3963808 Fuel Pressure Relief Valve | ISC ISL9 ISLe
The Cummins 3963808 is a genuine Cummins fuel rail pressure relief valve (also called a pressure limiting valve) used in ISC, ISL9, and ISLe high-pressure common-rail fuel systems. It maintains fuel rail pressure during high engine load conditions and prevents over-pressurization of the high-pressure fuel system. A failed or leaking relief valve can trigger DTC codes P1093 or P0087 (low fuel rail pressure). Stocked in Kelowna, BC and ships Canada-wide.
Specifications
- Part Number: 3963808
- Brand: Cummins (genuine OEM)
- Type: Fuel Rail Pressure Relief / Pressure Limiting Valve
- Material: Stainless steel construction
- Associated cross-ref: 3963812, Bosch 1110010020
Fitment
- Cummins ISC engine family
- Cummins ISL9 engine family
- Cummins ISLe engine family
- Also fits 2003–2007 Dodge/Ram 2500/3500 5.9L Cummins (ISB) in some applications
Cross-References
- Cummins: 3963812 (closely related valve)
- Bosch: 1110010020
- PAI Industries: 050629
FAQ
What symptoms indicate a failing fuel pressure relief valve?
Common symptoms include low fuel rail pressure fault codes (P1093, P0087), rough idle, power loss under load, and difficulty starting. Replacing the relief valve restores proper rail pressure maintenance.
Is this a genuine Cummins part?
Yes. Cummins 3963808 is a confirmed OEM fuel pressure relief valve stocked by authorized Cummins dealers and verified parts suppliers.
Does 3963808 replace 3963812?
3963808 and 3963812 are closely related pressure relief valve part numbers used in overlapping applications. Confirm the correct number with your engine serial number before ordering.
Is this in stock in Canada?
Yes, stocked at our Kelowna, BC warehouse. Ships Canada-wide.
| Make | Model | Year | Engine / Spec |
|---|---|---|---|
| ["Cummins ISC","Cummins ISL9","Cummins ISLE"] | |||
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Ships from Kelowna BC after order review.
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