Standard Ignition TS-135 Engine Coolant Temperature Sender

Engine Coolant Temperature Sender Overview

Standard Ignition TS-135 is an engine coolant temperature sender built for vehicles that use a coolant temperature indicator light on the dashboard. It uses a bolt-on, single male round connector design with a button terminal for direct replacement in the listed applications.

Fits 1979-1988 Chevrolet and GMC trucks and SUVs, plus select Buick, Cadillac, Oldsmobile, and Pontiac models with the correct indicator-light setup. The TS-135 is calibrated and tested to switch at its specified temperature point for consistent electrical signal transfer.

Key Features

• Engine coolant temperature sender for indicator-light applications
• Bolt-on attachment method for listed fitments
• 1 male round connector and 1 male button terminal
• Factory-calibrated and tested for specified actuation temperature
• Uses a formed bimetal contact arm for precise switching action
• Built with robust materials for service use

Detailed Product Description

The Standard Ignition TS-135 is designed for vehicles that rely on a coolant temperature sender to trigger a dashboard warning or indicator light. Standard Ignition uses controlled wax and bimetal switching elements in production, with each unit calibrated to make electrical contact at the lower-temperature set point required by the application. This helps maintain accurate signal transfer to the fan controller or indicator circuit where equipped.

This part cross-references Dorman - Conduct-Tite 85226 for the same application. It is a direct-fit option for many classic Chevrolet C10, Chevrolet K10, and GMC Jimmy applications, as well as select Corsica, Cavalier, and Skyhawk models listed in the fitment data. The TS-135 part number is also useful when searching for a replacement coolant temperature sender for older GM vehicles with a lighted temperature warning system.

Common Problems This Part Can Address

• Inoperative coolant temperature warning light
• Erratic or delayed temperature signal to the dashboard indicator
• Failed sender contact from age, heat cycling, or corrosion
• Incorrect temperature switch actuation in the original unit
• Replacement need after connector or terminal wear

Installation Notes and Tips

Verify the connector style, terminal type, and thread/application details against the original part before installation. This sender is listed for vehicles with a coolant temperature indicator light on the dashboard, so confirm the vehicle uses that system rather than a gauge-only setup. Clean the mounting area and inspect the wiring connector for corrosion or looseness before connecting the new unit.

For fitment searches, this part is commonly referenced for 1980-1981 Chevrolet C10, 1984 Chevrolet S10, 1979 Chevrolet K5 Blazer, and 1980-1981 GMC Jimmy applications, along with other listed Buick, Cadillac, Oldsmobile, Pontiac, Chevrolet, and GMC models.

Quality Assurance

Standard Ignition manufactures original equipment ignition products with complete quality control from component selection through finished-product testing. Each thermal switch is factory-calibrated and checked to confirm actuation at the specified temperature.