The Melling MWP-500 is a mechanical water pump for GM LS truck and SUV applications from 1999 to 2011. It is built as an original-equipment-style replacement for the engine cooling system, providing coolant circulation for LS-based truck and SUV engines.
Specifications:
- Type: mechanical water pump
- Engine family: GM LS, truck and SUV
- Application: 1999-2011 GM LS truck and SUV
- Part number: MWP-500
FAQ
Which vehicles does the Melling MWP-500 fit?
It is designed for GM LS truck and SUV applications from 1999 to 2011.
Is the MWP-500 a mechanical water pump?
Yes. It is a belt-driven mechanical water pump built as an original-equipment-style replacement.
Does the MWP-500 include a thermostat?
No thermostat is indicated for this part number; it is the water pump.

