2012 Audi A4 Coolant Temperature Sensors

High-quality products that meet OE appearance and performance to provide professional technicians and DIYers with a cost-effective solution.

Product Features:

• Designed to OE standards for ease of installation
• In manufacturing, we custom form the wax pellets for different temperature range specifications. All units are calibrated & tested to confirm switch actuation at their specified temperature
• The switch is designed using a formed bimetallic contact arm. The bimetal contact movement is achieved using the different expansion rates of two metals fused together. This is a creep action device, provides precise performance
• In production, all thermal switches are factory-calibrated to make electrical contact at the specified lower-temperature set point
• Robust design and high grade materials meet the stringent demands of today’s service professional

The Engine Coolant Temperature Sensor determines the exact temperature of the engine coolant by sending an analog signal to the ECM to ensure proper air/fuel ratio along with proper operation of the cooling fans and temperature gauge. The Engine Coolant Temperature Sensor may be located on the cylinder head, engine block, thermostat housing or intake manifold. Reasons for replacement include, check engine light illumination, erratic or no temperature gauge operation, erratic or no cooling fan operation, and engine overheating.

Product Features:

• OE MATCHED: Wires and probe length match OE. Mounting clips included where applicable
• FASTER RESPONSE TIME: Thermal conductive grease inside brass housing increases sensor response time
• THE DIFFERENCE: Thread sealant/o-ring installed where applicable. Thermistor placement within the housing matches OE to ensure proper output. Proper thermal conductive grease to provide accurate temperature transfer to the thermistor

Carquest Premium coolant temperature sensors and switches are designed to perform in harsh engine environments and meet or exceed original equipment (O.E.) specifications. Built by manufacturers that meet IATF 16949 certified framework, an internationally recognized proof of quality in the automotive industry, Carquest Premium coolant temperature sensors and switches undergo extensive validation testing to ensure long-lasting performance and reliability. Carquest Premium coolant temperature sensors and switches are part of our Carquest Vehicle Solutions, which is a full line of engine management and electronics products that help control ignition, fuel delivery and emission systems. Carquest Vehicle Solutions are OE-quality parts designed, engineered and tested by world-class manufacturers to ensure a reliable and long-lasting repair.

Product Features:

• Designed to meet or exceed OE specifications for fit, form and function
• 100% factory resistance calibrated to ensure extremely accurate temperature readings for optimal performance
• O-rings, seals or thread sealant are included if required
• Wires, clips and probe length match OE (where applicable)
• Weather-tight connectors prevent leaks and corrosion for longer life
• Extensive design validation testing and 100% end-of-line tested
• Carquest Vehicle Solutions Technical Support available from ASE certified technicians: 1-866-687-5413

Carquest Premium coolant temperature sensors and switches are designed to perform in harsh engine environments and meet or exceed original equipment (O.E.) specifications. Built by manufacturers that meet IATF 16949 certified framework, an internationally recognized proof of quality in the automotive industry, Carquest Premium coolant temperature sensors and switches undergo extensive validation testing to ensure long-lasting performance and reliability. Carquest Premium coolant temperature sensors and switches are part of our Carquest Vehicle Solutions, which is a full line of engine management and electronics products that help control ignition, fuel delivery and emission systems. Carquest Vehicle Solutions are OE-quality parts designed, engineered and tested by world-class manufacturers to ensure a reliable and long-lasting repair.

Product Features:

• Designed to meet or exceed OE specifications for fit, form and function
• 100% factory resistance calibrated to ensure precision tolerances, resulting in extremely accurate temperature for optimal performance
• OE precision matched thermistor ensuring Carquest sensors match OE output resistances across all temperature positions
• O-rings, seals or thread sealant are included if required
• Weather-tight connectors prevent leaks and corrosion for longer life
• Extensive design validation testing and 100% end-of-line tested
• Carquest Vehicle Solutions Technical Support available from ASE certified technicians: 1-866-687-5413