Zirgo 10436 Radiator Temperature Control Kit with Plug-N-Play Harness and Relay 180°F Fixed

The Zirgo 10436 (ZFSWFK) Radiator Temperature Control Kit is a complete, fixed-temperature electric cooling fan switch solution designed to automatically activate your electric cooling fan when engine coolant reaches 180°F (82.2°C). This kit includes everything needed for a clean, reliable installation — temperature sensor, premium relay, and a plug-n-play wiring harness — all in one convenient package.

The analog sensor features a 3/8" NPT threaded brass body that threads directly into the engine block or radiator, providing accurate and consistent coolant temperature readings. With ±4° accuracy and OFC (Oxygen Free Copper) wiring throughout, this kit delivers dependable performance for street rods, custom builds, and daily drivers alike.

Key Features:

• Fixed activation temperature: 180°F (82.2°C) — fan turns on automatically at preset temperature
• Analog input sensor with brass body and 3/8" NPT thread mounting
• 1/4" blade terminal connection
• ±4° temperature accuracy
• Includes premium relay for safe and consistent fan operation
• Plug-N-Play wiring harness with OFC (Oxygen Free Copper) wires for easy installation
• Non-adjustable fixed temperature setting — ideal for standard cooling applications
• Detailed installation instructions included
• Limited Lifetime Warranty

OEM Cross-References: Replaces 993146, 8993164, 25036135, 8992508, Valley Forge TS-78, General 2647, General TS-76.

Also available in an adjustable analog version (180°–240°F, SKU 311806) and an adjustable digital version (0°–240°F, SKU 191655) for engines with higher optimal operating temperatures.