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SKU:
NLT2T00611
Ships for free in 2–4 business days.
Fuel Lift Pump for Case 650 650G 660 680K 680L 688 75XT 760 780C 780D
$63.49
In Stock
$63.49
Sale price
$63.49
Regular price
This is a brand new mechanical fuel lift / transfer pump for Case equipment: 650, 650G, 660, 680K, 680L, 688, 75XT, 760, 780C, 780D. Key reference number(s): 3970880 / 4983584 family where equipped with the matching Cummins B-series pump.
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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
| Make / Application | Compatible Models / Details |
|---|---|
| Case equipment | 650, 650G, 660, 680K, 680L, 688, 75XT, 760, 780C, 780D |
Product Overview
Supplies low-pressure fuel from the tank side of the system to the injection equipment on compatible Cummins-powered Case machines. The common 3970880/4983584 pump family is used across several B-series engine applications, but Case model configurations can differ.
Typical symptoms of a weak lift pump include extended cranking, loss of power under load, difficulty re-priming after filter changes and an engine that runs better with an external fuel supply. Restricted filters or air leaks can create similar symptoms, so those should be checked at the same time.
Key Features & Performance
- Moves fuel from the tank/filter side toward the injection system.
- Helps restore prime and supply pressure on compatible diesel equipment.
- Pump lever and port arrangement should be compared before installation.
Specifications & Reference Numbers
- Reference number(s): 3970880 / 4983584 family where equipped with the matching Cummins B-series pump
- Function: Low-pressure fuel transfer to the injection system
Before You Order
Verify the pump casting, lever orientation, port locations and any stamped reference number on the original pump before ordering.
Frequently Asked Questions
Q: What should I verify before ordering?
A: Verify the pump casting, lever orientation, port locations and any stamped reference number on the original pump before ordering.
Q: Why would this part need to be replaced?
A: Typical symptoms of a weak lift pump include extended cranking, loss of power under load, difficulty re-priming after filter changes and an engine that runs better with an external fuel supply. Restricted filters or air leaks can create similar symptoms, so those should be checked at the same time.
Q: Is this an OEM part?
A: This listing is for a replacement component. Manufacturer names and reference numbers are used to identify fitment; compare the original part number and configuration before ordering.