Engine Coolant Thermostat 059 121 113 N

Maintain optimal engine temperature and efficiency with the genuine thermostat (part 059 121 113 N). This precision-calibrated valve regulates coolant flow between the engine and radiator, ensuring fast warm-up, stable operating conditions and reduced emissions.

Key Benefits

• Exact OEM Calibration
  Opens at the factory-specified temperature (typically 88 °C) for precise coolant management and consistent engine performance.

• Durable Construction
  Stainless-steel valve and high-temperature elastomer seal resist corrosion, scaling and wear under repeated thermal cycling.

• Improved Fuel Economy
  Rapid warm-up reduces cold-start fuel consumption and emissions by allowing the engine to reach its ideal temperature quickly.

• Engine Protection
  Prevents overheating by fully opening at maximum temperature, maintaining proper coolant flow to the radiator.

• Long Service Life
  Robust materials and factory assembly ensure reliable operation over extended service intervals.

Technical Specifications

• Part Number: 059 121 113 N

• Opening Temperature: 88 °C (±2 °C)

• Material: Stainless-steel valve with EPDM rubber seal

• Valve Type: Wax-pellet actuator for consistent response

• Housing Compatibility: Fits VAG coolant housings specifying 059121113N (verify via VIN)

• Operating Range: –40 °C … +120 °C

• Warranty: 24 months genuine-parts coverage

Installation Overview

1. Drain Coolant: Safely drain engine coolant below the thermostat housing level.

2. Remove Housing: Unbolt the coolant outlet housing and extract the old thermostat.

3. Clean Surfaces: Remove old gasket material and clean mating surfaces thoroughly.

4. Fit New Thermostat: Position the thermostat with the correct orientation arrow pointing toward the engine.

5. Seal & Torque: Install a new gasket or O-ring, reattach the housing, and torque bolts to factory specification.

6. Refill & Bleed: Refill with the proper coolant mixture, bleed the system of air, and verify no leaks.