Derale Dual Fan Controller Thread In 121025 while the bolt kits come

while the bolt kits come with washers

1992-2004 Chevrolet S10

Short water pump style includes Allen screws to attach nose cone while long water pump nose cone uses the bolts that are included with the pulley

Bleeder and drain included

Full/Pro Tree

Derale Dual Fan Controller Thread In 121025 while the bolt kits comeDerale Dual Fan Controller Thread In 16789 Thermostatic Dual Fan Control Adjustable 150 to 240 Degrees F Adjustable turn on temperature from 150 240 degreesF, Rated at a maximum 35 amps per fan, Activates fan #1 at adjusted temperature, Activates fan #2 at 10 degreesF warmer than fan #1, Turn off temperatures are preset at 10 degreesF below turn on temperatures, Die cast aluminum housing, AC override circuit included, Thread in 3 8" NPT probeDerale