Standard Ignition TS-71 Engine Coolant Temperature Sender

Engine Coolant Temperature Sender for Gauge Systems

Standard Ignition TS-71 is an engine coolant temperature sender built for vehicles that use a dash gauge to monitor coolant temperature. With a 1/2" thread size, single spade-style male connector, and bolt-on attachment, it is a direct-fit service part for many Chevrolet and GMC trucks, vans, and passenger cars from 1978-1992.

Standard Ignition TS-71 is engineered with calibrated thermal response and tested switch actuation to help maintain accurate temperature signal output for the gauge circuit.

Key Features

• Engine coolant temperature sender for gauge-equipped applications
• 1/2" thread size for listed fitments
• Male spade connector with plug-in style connection
• Brass finish with gold-colored body
• Formed bimetal contact design for precise electrical response
• Factory-calibrated and tested for specified actuation temperature
• Robust construction using high-grade materials

Detailed Description

The TS-71 is designed to send coolant temperature information to the vehicle gauge system, using a thermal switching design that relies on controlled metal expansion for accurate contact movement. Standard Ignition calibrates each unit during production to confirm electrical contact at the specified lower-temperature set point, helping support consistent gauge operation in service applications. This part cross-references Standard Motor Products TS71T for the same application.

Compatible With many Chevrolet and GMC applications, including 1979-1986 Chevrolet C20, 1985-1986 Chevrolet K30, 1980-1986 GMC C2500, and 1989-1990 GMC R3500. It also fits select Buick, Oldsmobile, and Pontiac models listed in the fitment data, including 1978 Buick Skylark, 1980-1983 Oldsmobile Delta 88, and 1979-1981 Pontiac LeMans.

What It Helps Solve

• Inaccurate or erratic coolant temperature gauge readings
• No gauge response from the temperature sender circuit
• Temperature signal issues after sender wear or internal failure
• Replacement needs on older GM trucks, vans, and passenger cars with gauge systems
• Service repairs requiring the correct 1/2" threaded sender

Installation Notes and Tips

• Verify the thread size and connector style against the original sender before installation.
• Use the listed vehicle fitment and engine/gauge configuration to confirm application match.
• Inspect the connector terminal and wiring for corrosion or looseness before connecting the new sender.
• Apply proper sealing practices only as specified by the vehicle service procedure.

Quality Assurance

Standard Ignition manufactures this sender with complete quality control from component selection through finished product testing. Each unit is calibrated and tested to confirm switch actuation at the specified temperature, supporting consistent performance in gauge-equipped cooling system applications.