Walker 270-1045 Engine Coolant Temperature Sensor Connector

Engine Coolant Temperature Sensor Connector

Walker Products 270-1045 is an engine coolant temperature sensor connector built for direct replacement service on a wide range of GM, Ford, Saab, Saturn, Buick, Cadillac, Chevrolet, GMC, Pontiac, Suzuki, Hummer, and Isuzu applications. It uses a 3-terminal layout with a male connector body, pin terminals, and female terminal ends for a secure electrical interface.

Key Features

• Part number: 270-1045
• Engine coolant temperature sensor connector for electrical repair
• 3-terminal design with pin terminals
• Male connector / female terminal configuration
• Walker Products engine management component
• Cross-reference: FEL-PRO 417; Standard Ignition S-619

Product Details

Walker Products has supplied fuel system and engine management components since 1946, with manufacturing and engineering support focused on meeting or exceeding OEM standards and specifications. The Walker Products line includes sensors, ignition-related components, and other engine management parts used in repair and maintenance work. For technicians servicing a Chevrolet Silverado 1500, GMC Sierra 2500 HD, or Cadillac CTS, this connector provides the electrical connection needed at the coolant temperature sensor circuit.

Compatible With 2002-2020 GM and Ford truck, SUV, and car applications, including Chevrolet Camaro, Impala, Malibu, Silverado, Tahoe, GMC Sierra, Yukon, Cadillac CTS, and Ford Super Duty models. This part number 270-1045 also appears in interchange listings for multiple OE and aftermarket references.

Common Repair Uses

• Broken or heat-damaged coolant sensor connector housing
• Corroded or loose terminal connection at the ECT sensor
• Intermittent temperature signal to the engine control system
• Hard starting, poor idle, or drivability issues tied to coolant temperature input
• Diagnostic trouble codes related to coolant temperature sensor circuit faults

Installation Notes

Verify connector style, terminal count, and terminal gender before installation. Match the vehicle harness and sensor side carefully, especially on applications such as Chevrolet Silverado 1500, GMC Sierra 1500, and Cadillac CTS where OE connector variations may exist. Inspect the mating terminals for corrosion, bent pins, or heat damage before reconnecting the harness.

Quality Assurance

Walker Products is an ISO 9001/IATF 16949 certified manufacturer with in-house product management and engineering support. The company states its parts are produced to meet or exceed OEM standards and specifications, with technical documentation and application support maintained for accuracy.