RW4123X (High Capacity) includes a 6 vane impeller and is recommended by the OE manufacturer.
SPECIAL NOTE: When replacing the water pump on a Detroit 60 Series engine, always check for excessive Bull Gear Runout (wear). Excessive runout will lead to premature water pump failure. *Refer to Mfg. Specifications for acceptable Runout and Bull Gear Replacement Guidelines.
Failure to Replace Worn Bull Gear may result in:
- Excessive gear wear and chipped/broken teeth
- Broken casting near bearing journal
- Failed Bearings