Standard Ignition TS-178 Engine Coolant Temperature Sender

Engine Coolant Temperature Sender for Gauge Applications

Standard Ignition TS-178 is an engine coolant temperature sender built for vehicles equipped with a dash gauge. It uses a calibrated thermal design with a snap-action electrical contact to deliver a precise signal to the gauge circuit, helping maintain accurate coolant temperature readings in service applications.

Compatible With 1985-1996 Buick Skylark, Century, 1989-1993 Chevrolet S10, 1990-1992 Chevrolet Lumina, 1987-1988 Chevrolet S10 Blazer, 1988-1993 Oldsmobile Cutlass Ciera, and other gauge-equipped GM models listed below. The TS-178 is also a direct-fit option for several Pontiac, GMC, and Oldsmobile applications.

Key Features

• Engine coolant temperature sender for gauge-equipped vehicles
• Standard Ignition TS-178 part number for catalog matching
• Bolt-on attachment method with 3/8"-18 thread size
• Female round plug-in connector with one male blade terminal
• Brass finish with black and gold housing colors
• Factory-calibrated thermal switching for specified actuation points
• Built with a formed bimetal contact arm and wax-based thermal design

Detailed Description

Standard Ignition TS-178 is engineered for accurate coolant temperature signal transfer in gauge applications. The sender uses a thermal switching design with custom wax formulations and a bimetal contact arm to create consistent electrical contact at the specified temperature set point. Each unit is calibrated and tested during production to confirm switch actuation, supporting dependable gauge operation in everyday service work.

This part cross-references Anchor 8345 for the same application. It is a practical replacement choice for GM vehicles such as the Chevrolet S10, Buick Century, and Pontiac Grand Am when the original coolant temperature sender is worn or no longer reading correctly.

What It Helps Fix

• Inaccurate or erratic coolant temperature gauge readings
• No gauge movement after engine warm-up
• Intermittent temperature signal to the instrument cluster
• Failed sender contact caused by age or heat cycling
• Replacement needs on gauge-equipped GM cooling systems

Installation Notes and Tips

• Verify the vehicle uses a gauge-style coolant temperature sender before ordering.
• Confirm the connector style, one blade terminal, and 3/8"-18 thread size match the original part.
• Inspect the connector and wiring for corrosion or looseness before installation.
• Use the vehicle service procedure for thread sealing and torque specifications.
• After installation, check gauge response as the engine reaches operating temperature.

Quality Assurance

Standard Ignition manufactures this sender with controlled component selection, factory calibration, and end-of-line testing to confirm temperature-actuated performance. As an OE ignition product manufacturer, the brand maintains quality control from component production through final assembly.

• Fits 1989-1996 Buick Skylark, N/A
• Fits 1988-1993 Buick Century, N/A
• Fits 1992-1995 Oldsmobile Achieva, N/A
• Fits 1988-1993 Oldsmobile Cutlass Ciera, N/A
• Fits 1989-1993 Oldsmobile Cutlass Cruiser, N/A
• Fits 1991 Oldsmobile Bravada, N/A
• Fits 1990-1991 Oldsmobile Cutlass Calais, N/A
• Fits 1990-1991 Oldsmobile Cutlass Supreme, N/A
• Fits 1985-1986 Pontiac Grand Am, N/A
• Fits 1990-1995 Pontiac Grand Am, N/A
• Fits 1990-1991 Pontiac 6000, N/A
• Fits 1991 Pontiac Grand Prix, N/A
• Fits 1990-1991 Pontiac Tempest, N/A, 1 Blade Term.; With Gauge
• Fits 1989-1993 Chevrolet S10, N/A
• Fits 1990-1992 Chevrolet Lumina, N/A
• Fits 1989-1991 Chevrolet S10 Blazer, N/A
• Fits 1988-1990 Chevrolet Celebrity, N/A
• Fits 1989-1990 Chevrolet Corsica, N/A, 1 Blade Term.; With Gauge
• Fits 1991-1993 GMC Sonoma, N/A
• Fits 1989-1990 GMC S15, N/A
• Fits 1987-1988 GMC S15, N/A, 1 Blade Term.; With Gauge
• Fits 1987-1988 GMC S15 Jimmy, N/A, 1 Blade Term.; With Gauge
• Fits 1987-1988 Chevrolet S10, N/A, 1 Blade Term.; With Gauge
• Fits 1987-1988 Chevrolet S10 Blazer, N/A, 1 Blade Term.; With Gauge