Painless Performance Fan Relay w/ Thermostat (On @ 185F, Off @ 170F) 23011413 Twin pump design allows the

Twin pump design allows the use of both pumps simultaneously or independently - second pump can be activated on demand for power adders such as nitrous or boost

When using hot air choke Q-Jet carbs and Performer manifold with above heads

1980-1981 Pontiac Bonneville

Black anodized microswitch brackets are made from lightweight billet aluminum and fit Holley 4150 and 4500 carburetors for precise activation of the microswitch

Painless Performance Fan Relay w/ Thermostat (On @ 185F, Off @ 170F) 23011413 Twin pump design allows theFan Relay w thermostat (on 185; off 175) This 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. Painless Performance is the