Engine Coolant Temperature Sensor GM Genuine 12650595 Metal Mount

Description

Product Overview

The GM Genuine Parts Engine Coolant Temperature Sensor is engineered to deliver precise temperature monitoring for your vehicle’s cooling system. Built from robust metal and designed for a flange‑mount installation, this sensor fits seamlessly into the original equipment location, matching the OEM specifications of part number 12650595. It operates across a wide measuring range of –40°C to 250°C (‑40°F to 482°F) with an accuracy of ±2°C, providing the engine control module with reliable data to regulate fuel injection, ignition timing, and fan operation. The sensor’s rapid 1 ms response time ensures that temperature fluctuations are captured instantly, helping to prevent overheating and maintain optimal engine efficiency. Its compact dimensions (2.5 × 1.3 × 0.8 in) and lightweight design (0.634 oz) make it easy to handle during installation, while the internal electronic output delivers a clean signal to the vehicle’s ECU.

Usage

This temperature sensor is ideal for a variety of GM vehicles, from passenger cars to light trucks, where accurate coolant temperature feedback is critical. It is commonly used in replacement applications for the original coolant sensor, ensuring that the engine’s thermal management system functions as intended. Whether you are performing routine maintenance, addressing a cooling‑system fault code, or upgrading to a higher‑performance component, this sensor provides the reliability needed for everyday driving and demanding conditions. Its flange‑mount style allows for a secure attachment to the engine block or cylinder head, minimizing the risk of vibration‑induced loosening. The sensor is also suitable for use in performance tuning scenarios where precise temperature data can help fine‑tune fuel maps and boost cooling efficiency.

Why Choose Us

Choosing the GM Genuine Parts sensor means you are getting a component that meets the exacting standards set by the original equipment manufacturer. Each unit is manufactured to GM OE specifications, guaranteeing fit, form, and function that match the factory part. The sensor’s metal construction offers superior durability compared to plastic alternatives, resisting corrosion and wear in the harsh engine environment. Our quality assurance process includes rigorous testing for voltage tolerance (up to 16 V), response time, and measurement accuracy, ensuring that every sensor performs reliably from the first mile. In addition, we provide comprehensive after‑sales support, including technical assistance and a warranty that covers manufacturing defects, giving you confidence in the long‑term performance of your purchase.

Key Features

• Accurate temperature range from –40°C to 250°C for comprehensive engine monitoring
• Fast 1 ms response time captures rapid temperature changes, protecting engine health
• Durable metal construction resists corrosion and extends service life
• Flange‑mount design ensures secure, vibration‑free installation
• Dedicated customer support and warranty for peace of mind

FAQ

What vehicles are compatible with this sensor?

The sensor is designed as a direct replacement for GM OEM coolant temperature sensors bearing part number 12650595. It fits a wide range of GM models, including sedans, SUVs, and light trucks that use the same mounting style and electrical specifications.

How does the sensor connect to the vehicle’s ECU?

The sensor provides an internal electronic output that plugs into the vehicle’s coolant temperature connector. The signal is processed by the ECU to adjust fuel delivery, ignition timing, and cooling fan operation based on real‑time temperature data.

Can this sensor be used in high‑performance applications?

Yes. Its precise measurement accuracy and rapid response make it suitable for performance tuning, where accurate coolant data is essential for optimizing engine maps and preventing overheating under increased load.

What is the warranty coverage for this product?

We offer a one‑year limited warranty covering any manufacturing defects. If the sensor fails due to a defect, we will replace it at no additional cost to you.

Is any special tool required for installation?

Installation typically requires basic hand tools such as a socket set and a torque wrench to secure the flange mount. No specialized equipment is needed beyond what is commonly used for standard coolant sensor replacements.