K 2500 Truck 4WD V8-305 5.0L VIN M SFI (1998)
The second design oil pump rotor (212) and slide (203) are identified with dimples (circular depression) as shown above.
The rotor (212) has two dimples adjacent to the rotor drive tangs (1).
The slide (203) has one dimple located on the spring tab (2).
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