Serpentine Belt Driven
W/O Thermostat And Housing
Pump only
2.05" Diameter Thermostat Opening May Require New Thermostat
Pump only
W/Thermostat And Housing
w/ Cylinder Deactivation (RPO LH6)
Incl. Thermostat
Pump Only
Serpentine Belt Driven
w/ Cylinder Deactivation (RPO LH6)
Includes thermostat and thermostat housing
Includes Gaskets with Mechanical Thermostat ; New Water Pump
w/ Cylinder Deactivation (RPO LH6)
Includes thermostat and thermostat housing
Includes Gaskets with Mechanical Thermostat ; New Water Pump
Thermostat Not Included; New Water Pump Mounting Gaskets Included With 1.99 Inch; 50.6 Millimeter Thermostat
w/ Cylinder Deactivation (RPO LH6)
w/ Cylinder Deactivation (RPO LH6)
w/ Cylinder Deactivation (RPO LH6)
w/ Cylinder Deactivation (RPO LH6)
Browse our selection of quality engine water pump parts designed specifically for your Buick Rainier. We carry options across multiple trim levels, body styles, and engine configurations to ensure a perfect fit.
CXL · CXL Plus
Sport Utility
L6 4.2L · V8 5.3L
Automatic