Details

• Brand:

  

• SKU:

  21200-EA000

• Other Names:

  nissan thermostat, thermostat assembly, coolant thermostat, engine thermostat, thermostat housing assembly, coolant regulator

• Description:

  Engine Cooling Thermostat Assembly – Coolant Temperature Regulator (21200-ED00A)

  OEM Replacement Part for Nissan

  Engine running cold, overheating, or triggering a P0128 check engine code? The Genuine Nissan Thermostat Assembly (21200-ED00A) helps restore proper coolant flow and engine temperature regulation, which is critical for fuel economy, emissions performance, heater operation, and long-term engine reliability.

  The OEM Nissan Thermostat Assembly (21200-ED00A) regulates coolant flow by opening and closing at the correct factory-calibrated temperature. A failing thermostat can cause improper engine warm-up, overheating, poor heater performance, or repeated cooling system faults.

  Always verify compatibility by VIN before ordering. Enter your VIN above and every order is reviewed by a certified Nissan parts specialist to verify fitment before shipping.

  Specifications

  Part Type: Thermostat Assembly
  System: Engine Cooling System
  Function: Regulates engine coolant flow based on temperature thresholds
  Construction: OEM-cast housing with integrated thermostat valve
  Position: Engine block-side thermostat housing
  Includes: Pre-installed thermostat with factory seal / gasket
  OEM Type: Genuine Nissan OEM Replacement Part

  Compatible Nissan Models

  This genuine Nissan thermostat assembly fits select Nissan vehicles including:

  2001–2006 Nissan Altima | 2.5L L4
  2012–2018 Nissan Altima | 2.5L L4

  2004–2024 Nissan Frontier | 2.5L L4 | 4.0L V6

  2015–2019 Nissan Murano Hybrid | 2.5L Hybrid

  2013–2021 Nissan Pathfinder Hybrid | 2.5L Hybrid

  2007–2015 Nissan Rogue | 2.5L L4
  2013–2020 Nissan Rogue | 2.5L L4

  Fitment may vary depending on production date, engine, or market configuration.

  Check compatibility here by entering your VIN:
  https://parts.chapmannissan.com

  Key Features

  • Factory-Calibrated Thermostat Operation
  Opens and closes at the correct temperature for proper engine performance.

  • Includes Factory Seal / Gasket
  Designed to help ensure proper sealing and reduce leak risk during service.

  • OEM Cooling System Performance
  Maintains proper coolant circulation and engine warm-up characteristics.

  • Supports Fuel Economy and Emissions Control
  Helps the engine reach and maintain proper operating temperature.

  • Genuine Nissan Thermostat Assembly
  Engineered specifically for Nissan cooling systems and ECM calibration logic.

  Failing to Replace a Faulty Thermostat Can Lead To

  P0128 Check Engine Code
  Engine may not reach proper operating temperature.

  Engine Overheating
  A stuck thermostat can restrict coolant circulation.

  Poor Fuel Economy
  Running below operating temperature affects combustion efficiency.

  Reduced Heater Performance
  Improper coolant flow can reduce cabin heat output.

  Premature Cooling System Wear
  Temperature instability may increase stress on pumps, hoses, and sensors.

  Related Components to Inspect or Replace

  Coolant Temperature Sensor
  Works with the thermostat to monitor engine temperature.

  Radiator Cap
  Improper system pressure can affect cooling performance.

  Water Pump
  Inspect for leaks, bearing wear, or circulation issues.

  Coolant Hoses
  Check for swelling, cracking, or coolant seepage.

  Engine Coolant
  Use the correct Nissan-approved coolant during service.

  Order with Confidence

  Restore proper engine temperature control with the Genuine Nissan Thermostat Assembly (21200-ED00A).

  Always verify compatibility by VIN before ordering. Enter your VIN above and every order is reviewed by a certified Nissan parts specialist before shipping.

  All OEM Nissan parts are shipped directly from Chapman Nissan in Philadelphia, PA, and every order is reviewed by a certified Nissan parts specialist before shipping.

  Need help confirming compatibility?

  https://parts.chapmannissan.com/contact-us
  Phone: 215-492-1200

  Restore Your Nissan with Genuine Accessories

  Keep your Nissan operating at its best with genuine Nissan maintenance parts, cooling system components, and factory-engineered accessories designed specifically for your vehicle.

  FAQ

  What does a thermostat assembly do?
  It regulates coolant flow to help maintain proper engine operating temperature.

  What are symptoms of a failing thermostat?
  Common symptoms include overheating, poor heater performance, fluctuating temperature gauge readings, or P0128 trouble codes.

  Does this thermostat include the seal or gasket?
  Yes. This assembly includes the factory seal / gasket.

  Can a bad thermostat cause poor fuel economy?
  Yes. An engine running below normal temperature may use more fuel.

  Will this fix a P0128 code?
  A faulty thermostat is one of the most common causes of P0128 cooling system codes.

  
  

• Condition: New
• Notes: Includes Thermostat Gasket. Includes Thermostat Seal Ring.
• Applications: 2.5L.
• Replaces:

  212006n210

• Warranty:

  This part is covered by Nissan’s 12-month / 12,000-mile limited parts warranty against defects in materials or workmanship.

  Labor coverage applies only when installed at an authorized Nissan dealer.

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