Walker Products 214-1033 Engine Coolant Temperature Switch

The Walker Products 214-1033 is a direct-fit replacement engine coolant temperature switch (also known as a temperature indicator switch, or TIS) engineered for GM trucks, vans, and SUVs. This switch monitors engine coolant temperature and triggers the temperature warning light on the instrument cluster when a threshold is reached, providing the driver with critical overheat protection alerts.

Key Features:

• Direct OEM replacement — matches original fit, form, and function with no modifications required
• Activates the dashboard temperature warning light (TIS) to alert the driver of overheating conditions
• Manufactured to meet or exceed all OEM specifications for resistance values, thermal response, and thread type
• Built from high-temperature, corrosion-resistant materials designed to withstand prolonged exposure to pressurized coolant, heat, and vibration
• Quality inspected and tested before packaging to ensure reliable, long-term performance
• Produced in an ISO 9001 / IATF 16949 certified manufacturing facility
• Cross-references to Standard Motor Products (SMP) TS387

Common symptoms of a failing coolant temperature switch include a temperature warning light that stays on, fails to illuminate, or behaves erratically. Walker Products has been a trusted supplier of engine management components and fuel system parts to the automotive aftermarket since 1946, offering a catalog of over 20,000 products built to restore proper engine operation.