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12_0334c05a-fffd-4343-8527-5f643b6608ca - Northline Parts

Fuel Feed Pump 3933255 J936320 for Cummins 4BT / 6BT B-Series Diesel Engines

SKU: NLT2T01463
$78.99 In Stock
$78.99
Sale price  $78.99 Regular price 
Ships for free in 2–4 business days.
This is a mechanical fuel feed/lift pump referenced by 3933255 and J936320 for compatible Cummins 4BT and 6BT B-series diesel applications.
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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.

Compatible equipment / model
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.

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