Rein ELC0051P Engine Coolant Temperature Sensor

OE-Style Coolant Temperature Sensor

Rein ELC0051P is an application-specific engine coolant temperature sensor kit built to match OE design and function. It is tested for performance and manufactured to strict engineering standards for materials and tolerances, making it a direct-fit choice for Volkswagen Beetle, Golf, Jetta, Passat, and Audi A4, TT, and related models.

• Application-specific engine coolant temperature sensor kit
• Tested to ensure maximum performance
• Built to strict engineering standards for materials and tolerances
• Long-life construction for durability
• Made by the OE manufacturer
• Green sensor body, 20mm, 4-pin design with dual-temperature function, clip, and seal noted in fitment

Detailed Product Overview

This Rein temperature sensor is intended for vehicles that use the green 20mm, 4-pin coolant temperature sensor configuration. Part number ELC0051P is listed for a wide range of Volkswagen and Audi applications, including 1998-2010 Volkswagen Beetle, 1999-2006 Volkswagen Golf, 2000-2005 Volkswagen Jetta, 2000-2005 Volkswagen Passat, 1999-2008 Audi A4, and 2000-2006 Audi TT. It also cross-references URO 059919501A for the same application.

As a coolant temperature sensor, this component reports engine coolant temperature to the vehicle’s control systems so fuel delivery, idle strategy, and cooling fan operation can respond correctly. Rein ELC0051P is built to OE-style specifications for fit, function, and electrical connection integrity.

Common Issues This Part Can Address

• Incorrect coolant temperature readings on the dash or scan tool
• Rough idle or inconsistent cold-start behavior
• Cooling fan operation that does not match engine temperature
• Fuel economy loss caused by inaccurate temperature input
• Check engine light concerns related to coolant temperature sensor faults

Installation Notes and Tips

Verify the connector style, 20mm sensor size, and green housing before installation. Confirm the vehicle’s VIN breakpoints and engine application for 1999 model-year Volkswagen and Audi vehicles, since several listings include production-date notes. Inspect the seal and retaining clip condition during service, and clear diagnostic trouble codes after installation if the fault was sensor-related.

Quality Assurance

Rein manufactures this sensor to OE-level design requirements and application-specific standards. The part is tested for performance and built for long service life, with OE manufacturer sourcing noted in the product data.