Search result for: 21200ET01A
THERMOSTAT ASSY
Part number: 21200ET01A
Availability: 0
Weight, kg: 0.104
Make: Nissan
Made in: Mexico

Engine Coolant Thermostat Assembly for Nissan
Keep your Nissan’s temperature in the sweet spot with this precise thermostat assembly. It shortens warm‑up, stabilizes operating temp, protects the head gasket, and improves fuel economy. Built to OEM geometry for tight sealing and steady flow, it restores factory cooling performance.
Why your engine needs it ❄️
The engine lasts longest and runs cleanest around 90°C. This temperature regulator meters coolant between block and radiator so the ECU, oil, and emissions systems work as designed in any season.
How it works ⚙️
Inside is a wax pellet that expands as coolant heats, pushing a plunger to open the valve near 88–92°C. Cold: it stays shut, routing coolant through the bypass for fast warm‑up. Hot: it opens progressively to the radiator. A molded seal prevents leaks; install with the bleed/jiggle pin upward.
What happens if it breaks ⚠️
Stuck closed: overheating, boiling coolant, pinging, warped head or blown gasket. Stuck open: slow warm‑up, weak cabin heat, rich mixture, P0128, carbon build‑up, higher fuel use. Erratic action causes temp swings and fan overrun.
Pro install tips
Fit a new gasket, clean mating surfaces, use Nissan‑spec coolant, bleed air, and torque evenly on a cool engine.
Compatibility
- Tiida
- Sentra
- Versa
- Rogue
- Livina
- Tiida Sedan
- Versa Sedan
- Nv200
- Nv200 Taxi
