This premium 12-volt starter motor is engineered specifically for heavy-duty applications featuring the Cummins 3.9L (4B / 4BT) diesel engine. Commonly found in Case industrial equipment including backhoes, loaders, and crawler tractors, this unit utilizes an Offset Gear Reduction (OSGR) design to provide superior cranking torque in cold climates and demanding conditions.
RELIABILITY: 4Drive components are manufactured with high-temp copper windings and heavy-duty solenoids to meet or exceed original equipment performance.
This is a premium quality aftermarket replacement part from 4Drive, manufactured to meet or exceed original Denso/Case standards for fitment and performance.
How do I know if it is compatible?
We recommend checking the SKU or OEM cross-reference numbers. If your old unit is marked with 128000-0540 or Case A170746, this is the correct direct-fit replacement.
Will this fit the newer Tier II engines?
This specific unit (Lester 16990) is designed primarily for the 1984–1996 era machines. For newer Cummins engines, please verify the mounting bolt pattern and tooth count before ordering.
Visit 4drive.co.uk for technical support and more premium replacement parts. Please verify your original part number against the references above before purchasing.
