Search result for: 2120005D02

Substitutions
THERMOSTAT L18/C32
Part number: ZB5482
Availability: 100
Weight, kg: 0.121
Processing: 4-5 days
Make: HKT
Made in: Japan



THERMOSTAT
Part number: TH00782G1
Availability: 0
Weight, kg: 0.104
Processing: 4-5 days
Make: Gates
Made in: Germany

Engine Coolant Thermostat Assembly
This precision thermostat keeps your Nissan engine in the ideal heat zone. Without stable temperature control, power drops, emissions rise, and parts wear faster. A healthy unit ensures quick warm‑up, steady operating temp, strong cabin heat, and long engine life.
Why this part is needed ❄️
The cooling system must reach and hold a set temperature. This valve regulates coolant flow so the engine runs neither too hot nor too cold. It protects the head gasket, oil, and sensors, and keeps fuel economy in check.
How it works
Inside is a wax pellet and spring. As coolant warms, the wax expands and pushes the valve open, routing hot coolant to the radiator. When coolant is cool, the valve closes, sending flow through the bypass for fast warm‑up. It cycles smoothly every drive.
What happens if it fails ⚠️
Stuck closed: overheating, boiling coolant, hard upper hose, warped head, warning light. Stuck open: cold running, high fuel use, weak heater, rich mixture, carbon buildup. Erratic action causes temp swings and poor drivability.
Tech tips for replacement
Install with a fresh seal, correct orientation, and clean housing. Refill with the right coolant mix and bleed air. Inspect radiator cap and hoses. Clear fault codes and verify opening temperature with a scan or IR test.
Compatibility
- Atlas
- Civilian
- Datsun Truck
- Safari
