Fuel Feed Pump 3933255 J936320 for Cummins 4BT / 6BT B-Series Diesel Engines
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Compatible Models
We do our best to list all compatible models. Although this may be the part you need, your exact model may not appear below.
| Brand | Model / Engine | Application Notes |
|---|---|---|
| Cummins | 4BT | B-series diesel engine |
| Cummins | 6BT | B-series diesel engine |
Product Overview
The feed pump draws fuel from the tank and supplies the injection system at low pressure. A worn diaphragm or check valve can cause hard starting, loss of prime, power fade under load or fuel leakage around the pump body.
3933255 and J936320 are commonly used as interchange numbers for B-series lift-pump service. Because several Cummins B-series fuel systems were used over the years, the mounting flange, lever arrangement and original part number should be matched.
Key Features & Performance
- Mechanical lift/feed pump for Cummins B-series diesels
- Common 4BT and 6BT application family
- Cross-references 3933255 and J936320
- Restores low-pressure fuel supply ahead of the injection pump
Technical Specifications
| Part type | Mechanical fuel feed / lift pump |
|---|---|
| Primary references | 3933255, J936320 |
| System | Low-pressure diesel fuel supply |
Part Numbers & Cross-References
3933255, J936320
Frequently Asked Questions
What should I verify before ordering?
Compare the existing pump number, mounting flange and actuation lever before ordering.
Is this an OEM part?
No. This listing is a replacement component. Manufacturer names, model names and reference numbers are used for identification and compatibility; compare the original part and equipment details before ordering.