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GMC R3500 Thermostats

Looking for aftermarket parts to modify or upgrade your GMC R3500 with thermostats? At Tunersports.com we carry a huge selection of the top name brand performance thermostat parts and accessories for your R3500.

Whether you have a 1991 or 1991 GMC R3500 in Base to SLE trim we have you covered. We have 2 thermostats available to mod your R3500. All parts have free shipping to the Continental US 48 States.

All R3500 Thermostat Parts:

Only show in-stock parts

Gates Thermostats

OUT OF STOCK 33428 Gates 1986-2005 Buick LeSabre V-6 3.8L Thermostat 1991-1991 GMC R3500 Base / SLE $30.99 Details
OUT OF STOCK 33429S Gates 86-05 Buick LeSabre V6 3.8L 195 Degree Reverse Poppet Thermostat 1991-1991 GMC R3500 Base / SLE $35.97 Details