Year Make Model | Painless Performance
Made in the USA
Open today at 8AM CST
Easy To Read Printed Wiring
Weatherproof Fan Relay Kit w/thermostatic switch 185F On/175F Off By Painless Performance
Made In USA
P/N 30129 $55.99
Weatherproof Fan Relay Kit w/thermostatic switch 185F On/175F Off



Recommended for You
P/N: 30127
P/N: 30127
Weatherproof Fan Relay Kit - LSX 205 thermostat
P/N: 30128
P/N: 30128
Weatherproof Fan Relay Kit 195
P/N: 30130
P/N: 30130
Weatherproof Fan Relay Kit
P/N: 30133
P/N: 30133
Weatherproof PCM controlled Fan Relay Kit
P/N: 30104
P/N: 30104
Adjustable Fan Thermostat w/Relay
P/N: 30112
P/N: 30112
Adjustable Fan Thermostat w/o Relay
P/N: 30113
P/N: 30113
Gen III Thermostat (205-190 degrees)

  • App
  • Specs

This weatherproof Fan-Thom II kit comes with a threaded thermostat that screws into the engine block or intake manifold for a professional looking installation.  This is inexpensive protection for an electric fan and a vehicle's wire harness.  Provides constant voltage, protects from voltage and amperage spikes and prevents the fan from back feeding voltage through the vehicle's wire harness. 

This kit includes:

  • Weatherproof SPST 35 Amp relay
  • Weatherproof 30 Amp circuit breaker
  • Thermostatic switch 185°F On/175°F Off (thread size: ⅜"-18NPT)
  • ½"NPT to ⅜"NPT adapter
  • Weatherproof relay base with harness (6' input, 2' output)
  • Weatherproof heat-shrinkable crimp-on terminals
  • Mounting hardware



WarningProp 65 Warning
Hazardous Material Warning

WARNING: This product can expose you to chemicals including lead which is known to the State of California to cause cancer or birth defects or other reproductive harm. For more information, visit

Link to P/N:

Other electric fan relay kits and accessories available from Painless Performance®™

30100- 70 Amp fan relay kit (no thermostat)

30101- Universal fan relay kit (no thermostat)

30102- Single activation fan relay kit (195°F On/185°F)

30103- Single activation fan relay kit (185°F On/175°F)

30104- Universal (adjustable thermostat)

30106- Gen III fan relay kit (205°F On/190°F)

30109- PCM controlled fan relay kit (no thermostat)

30110- Replacement thermostat (195°F On/185°F)

30111- Replacement thermostat (185°F On/175°F)

30112- Adjustable thermostat only

30113- Replacement Gen III thermostat (205°F On/190°F)

30114- Dual activation fan relay kit (195°F On/185°F)

30115- Dual activation fan relay kit (185°F On/175°F)

30127- Weatherproof Gen III fan relay kit (205°F On/190°F)

30128- Weatherproof single activation fan relay kit (195°F On/185°F)

30130- Weatherproof universal fan relay kit (no thermostat)

30133- Weatherproof PCM controlled fan relay kit (no thermostat)