Cummins 4937767 is the engine driven fuel transfer (lift) pump with its hand primer, plunger and mounting gasket. It is used on Cummins B and C series engines. This aftermarket version is made to the same mounting and connections as the original, so it fits where the old one came off.
Sold as one unit. Check the number on your old part, or in the parts manual for your machine, before ordering.
Technical properties & sizes
Specifications
| Part Type |
Fuel Transfer Pump |
| Replaces |
Cummins 4937767 |
| Type |
Mechanical lift pump with hand primer |
| Fits |
Cummins 6BT, 6CT, 4B3.9, 6B5.9 and ISB6.7 engines, including Hyundai excavators |
| Condition |
New, aftermarket |
| Stat. HS-Code |
841330 |
| Country of Manufacture |
China |
Compatibility
Cummins machines
Cummins 6BT, 6CT, 4B3.9, 6B5.9 and ISB6.7 engines, including Hyundai excavators
Check the part number on your old unit before ordering.
Part numbers
| Cummins Part No.(SPM Part No.)
|
Fits |
|
4937767(SPM-HEP-4200)
|
Cummins 6BT, 6CT, 4B3.9, 6B5.9 and ISB6.7 engines, including Hyundai excavators |
Applications & use cases
Hard starting
A weak lift pump starves the injection pump. Long cranking after standing is a common sign.
Loss of power under load
If the engine pulls well when light but dies off under load, check fuel delivery and the lift pump.
Leaks
Fuel weeping from the pump body or seals means it is time to replace it.
Bleeding the system
Prime and bleed the fuel system after fitting the new pump.
Price beat guarantee
We check what other aftermarket sellers charge for this same part. Their prices on the date we checked:
| Seller |
Price |
Checked |
| FridayParts |
USD 39.38 |
24 Oct 2026 |
| eBay (4 aftermarket sellers) |
USD 42.02 to 72.59 |
25 Oct 2026 |
| Diselmart |
USD 58.00 |
24 Oct 2026 |
| Spare Part Mart |
USD 31.50 |
Today |
Our price of USD 31.50 is 20% to 57% less than these sellers.
Found this part cheaper somewhere else? Send us the listing and we will beat it by 5% under our Price Beat Guarantee. Every order is also covered by our 30 day money back guarantee.
Frequently asked questions
Is this a genuine Cummins part?
No. It is an aftermarket part made to fit in place of Cummins 4937767. It is not made by or affiliated with Cummins; the Cummins part number is used only to show what it replaces.
Will it fit my machine?
It fits Cummins 6BT, 6CT, 4B3.9, 6B5.9 and ISB6.7 engines, including Hyundai excavators. Machines change parts between serial number ranges, so check the number on your old part or in your parts manual.
Does it fit without changes?
It is made to the same mounting and connections as the original part. Fit new gaskets and seals where they are used, and check for leaks and correct operation before putting the machine back to work.