Engine Coolant Temperature Sensor (ECT)Precision Engine Management for Buick, Cadillac, Chevrolet, GMC, and Import ModelsEnsure your engine operates at its peak efficiency with this premium Engine Coolant Temperature (ECT) Sensor. As a vital component of the powertrain control system, this sensor monitors the temperature of the coolant and relays high-precision data to the vehicle’s Engine Control Unit (ECU). The ECU relies on this information to manage fuel delivery, ignition timing, and cooling fan engagement.A faulty sensor can lead to significant performance issues, including poor fuel economy, engine hesitation, overheating, or a failed emissions test. This replacement unit is engineered with high-conductivity pin terminals and a durable brass housing to withstand the extreme thermal cycling of the engine bay while providing accurate, real-time data to your vehicle's computer.Fitment Verification and Vehicle ApplicationsThis sensor is a direct-fit replacement for an extensive range of General Motors vehicles (1985–2014) and select Isuzu, Honda, and Acura imports. Buick: Century, LeSabre, Regal, Park Avenue, LaCrosse, Lucerne (1985–2011) Cadillac: Deville, Eldorado, Fleetwood, Seville, STS, DTS, Escalade (1985–2011) Chevrolet: Silverado, Tahoe, Suburban, Camaro, Corvette, Impala, S10, Express (1985–2014) GMC: Sierra, Yukon, Jimmy, Safari, Savana, Sonoma (1985–2014) Oldsmobile: 88, 98, Cutlass, Alero, Bravada, Aurora, Silhouette (1985–2004) Pontiac: Firebird, Grand Am, Grand Prix, Bonneville, Sunfire, Montana (1985–2008) Import/Specialty: Acura SLX (96-99), Honda Passport (96-02), Isuzu Trooper/Rodeo (92-04) Technical Specifications and Attributes Terminal Quantity: 2-Pin. Connector Gender: Female. Connector Shape: Circular. Terminal Type: Pin. Material: Corrosion-resistant Brass and high-temp composite. Sealing: Designed for a leak-proof thread fit. Harness: Reuses factory wiring harness (not included). What’s in the Box(1) Engine Coolant Temperature SensorIndustry Cross-Reference Numbers General Motors: 12146312, 15326386, 25036979, 15321686, 10045847 ACDelco: 213-928, 213-52 Acura/Honda: 8121463120, 8153263860 Standard Motor Products: TX3, TX3T BWD: WT3000 Wells: SU109 Jeep/AMC: 33001793, J8133450 Installation and Technical Tips Safety First: Only attempt installation when the engine is completely cool. The cooling system is pressurized when hot, which can cause the sudden release of scalding fluid if the sensor is removed prematurely. Minimize Fluid Loss: To avoid a large mess and the need for a full system bleed, have the new sensor ready to install immediately upon removing the old one. A "quick swap" method keeps air pockets out of the engine block. Thread Sealant: Most sensors come with a pre-applied sealant or utilize a crush washer. If yours does not, apply a small amount of automotive-grade thread sealant to prevent slow leaks, ensuring you do not cover the sensor tip itself. Electrical Cleaning: Inspect the factory connector for corrosion or "green crust" before plugging in the new sensor. Using a dedicated electronic cleaner can ensure a solid signal to the ECU.
