How to remove and install a thermostat for piston engine on 1989 Mazda 929?

To remove and install the thermostat, place drain pan, drain coolant below thermostat. Disconnect radiator hose and sensor. Remove fasteners, housing, gasket and thermostat; clean surfaces. Install new thermostat with pellet downward, jiggle pin up, fit gasket, housing, ensure 929 cover mark faces front, reconnect hoses, refill, check for leaks.

Genuine 1989 Mazda 929 Thermostat

Engine Coolant Thermostat

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1989 Mazda 929 Thermostat Part Number: 8AH1-15-171B-9U
Product Specifications
- Other Name: Thermostat Set
- Item Weight: 0.70 Pounds
- Condition: New
- Fitment Type: Direct Replacement
- SKU: 8AH1-15-171B-9U
- Warranty: This genuine part is guaranteed by Mazda's factory warranty.
Fits the following 1989 Mazda 929 Submodels:
- Base, S | 6 Cyl 3.0 L GAS

1989 Mazda 929 Thermostat Parts and Q&A

Q: How to remove and install a thermostat for piston engine on 1989 Mazda 929?
A: To remove and install the thermostat, place drain pan, drain coolant below thermostat. Disconnect radiator hose and sensor. Remove fasteners, housing, gasket and thermostat; clean surfaces. Install new thermostat with pellet downward, jiggle pin up, fit gasket, housing, ensure 929 cover mark faces front, reconnect hoses, refill, check for leaks.