NTK EF0004 Engine Coolant Temperature Sensor

Engine Coolant Temperature Sensor Overview

NTK EF0004 is an engine coolant temperature sensor built for import and domestic applications that use a 3-terminal design. It uses a round female connector with blade terminals and is listed for a wide range of GM cars and trucks, including Buick Regal, Chevrolet Lumina, and Pontiac Grand Prix applications.

Key Features

• Engine coolant temperature sensor for temperature signal input to the engine management system
• Round female connector with blade terminals for the specified electrical interface
• 3-terminal design for listed applications
• Sensor-only listing for select fitments where noted in the catalog data
• NTK EF0004 part number for direct catalog matching

Fitment Details

Compatible with 1991-2003 GM applications listed in the catalog, including Fits 2000-2003 Pontiac Grand Prix, N/A; Fits 1999-2002 Buick Century, N/A; Fits 1996-2002 Buick Regal, N/A; Fits 2000-2001 Chevrolet Lumina, N/A; Fits 1997-1999 Chevrolet Monte Carlo, N/A; Fits 1996-1999 Pontiac Bonneville, N/A; Fits 1994-1997 Chevrolet S10, N/A; and additional Buick, Chevrolet, GMC, Oldsmobile, and Pontiac models shown in the fitment table. The EF0004 is also listed for several 1990s Chevrolet and GMC medium-duty truck applications with 3 terminals.

What This Sensor Helps Address

• Incorrect coolant temperature readings sent to the engine control system
• Hard starting or rough running related to inaccurate temperature input
• Cooling fan control issues caused by faulty sensor data
• Illuminated check engine light tied to coolant temperature sensor faults
• Driveability problems from a worn or failed temperature sensor

Installation Notes and Tips

Verify connector shape, terminal count, and application notes before installation. This listing includes a round connector, blade terminals, and a 3-terminal configuration; some catalog entries also note sensor-only usage. Confirm the vehicle’s original sensor style against the fitment table before ordering. Part number EF0004 should be matched to the vehicle application and connector details for proper selection.

Quality Assurance

NTK draws on more than 80 years of automotive experience and is the only OE supplier with a full line of technical sensors in the aftermarket for import and domestic vehicles. NTK sensors are tested under thermal shock, vibration, and OBD verification conditions and are manufactured to meet or exceed OE specifications. This part cross-references Beck/Arnley 158-0743 and Delphi TS10032 for the same application.