Hella 009107421 Engine Coolant Temperature Sensor

Hella Engine Coolant Temperature Sensor

The Hella 009107421 engine coolant temperature sensor provides direct temperature input for the engine management system. Built as a plugged NTC sensor with a black housing, yellow color coding, and a 4-pin connector, it is specified with a seal and retaining ring for a secure service replacement.

Compatible With Volkswagen Golf, Jetta, Passat, and Cabrio applications from 1993 through 2001, this Hella temperature sensor supports accurate coolant temperature reporting for select VW models. The Hella 009107421 is a practical OE-style replacement when the original sensor shows signs of electrical or temperature signal failure.

Key Features

• Brand: Hella
• Part number: 009107421
• Engine coolant temperature sensor / temperature sensor
• NTC sensor design for temperature-dependent resistance output
• Plugged mounting type
• 4-pin electrical connector
• 12V rated voltage
• Black housing with yellow color coding
• Includes seal and retaining ring

Product Details

This Hella coolant temperature sensor is built for Volkswagen applications that require a black/yellow, 4-pin plugged sensor. It is listed for 1993-2001 Volkswagen Golf, 1993-1999 Volkswagen Jetta, 1995-1997 Volkswagen Passat, and 1995-1999 Volkswagen Cabrio, with fitment notes that include 4-pin and black/yellow color identification on select vehicles. If you are replacing a faulty coolant temperature sender on a VW Golf, Jetta, Passat, or Cabrio, the 009107421 offers the correct sensor style and connector configuration for the listed applications.

This part cross-references Delphi TS10245 and Gates 33640 for the same application.

What It Helps Address

• Incorrect coolant temperature readings at the engine control system
• Hard starting or rough running related to inaccurate temperature input
• Cooling fan control issues caused by a faulty sensor signal
• Check engine light conditions tied to coolant temperature sensor faults
• Driveability problems on select Volkswagen Golf, Jetta, Passat, and Cabrio models

Installation Notes and Tips

Verify connector style, pin count, and color coding before installation. This sensor uses a plugged mounting design and includes a seal and retaining ring, so the mating surface should be clean and free of debris before fitting. Confirm vehicle application by year, make, model, and the listed notes before replacing the original part number 009107421.

Quality Assurance

Hella supplies this temperature sensor as an OE-style replacement component for the listed Volkswagen applications. The part is built to match the specified sensor type, connector layout, and mounting details for direct service use.