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GMC R3500 Thermostats

You enjoy taking care of your R3500.

Select Your VehicleIt's not all the time that you realize that you have to buy a replacement Thermostats for your automobile. While it's not hard to find replacement parts for GMC vehicles, these days only the absolute best are required to fix your automobile. Obviously, you bought your R3500 because you knew that you wanted performance and rugged design both impeccably combined into one car, truck, or SUV. Anyone who operates a GMC knows that when it comes to repairing their automobile only the most superior replacement parts will do.

The function and purpose of Thermostats.

Your car or truck has a liquid-cooled engine, and its thermostat keeps the coolant flowing in the right direction so that your engine can maintain a constant and ideal operating temperature. On start-up, the thermostat remains closed; bypassing the flow of coolant through your radiator. This gets the coolant hot so that the engine warms up. Once it reaches the right temperature, your GMC R3500 thermostat responds by directing coolant to the radiator. Now your coolant is part of a constant cycle in your GMC R3500 engine that keeps it within a specific range of temperatures that are determined for the engine to achieve the best balance between power, fuel efficiency, and emissions... all thanks to the thermostat.

Your automotive desires .

Given all the hassles associated with performing maintenance on your car or truck, let www.carpartsdiscount.com be the most authoritative website you go to make purchasing it easy. At Car Parts Discount, we have real customer support agents on the phone with enough expertise to help you purchase the appropriate GMC R3500 part for your project or repair. Buy all the car parts you will ever need from carpartsdiscount.com and realize incredible savings on all your upcoming repairs. Just choose your year from the list below to find the right GMC R3500 Thermostats for your 1991, 1990, 1989, 1988, 1987 model.

Info: Select your make and model in the red title bar above so we can show the parts you need.
Select Your Year
GMC R3500 Engine Coolant Thermostat, OEM: 300-160/300160Motorad
1987-1991 GMC R3500 Motorad Engine Coolant Thermostat 300-160
1.35, Save 41%  
OEM: 300-160, Item: 1405010
  In Stock, Usually ships within 1 business day
Select year, make, model above to verify this part fits your vehicle

GMC R3500 Engine Coolant Thermostat, OEM: 300-180/300180Motorad
1987-1991 GMC R3500 Motorad Engine Coolant Thermostat 300-180
1.35, Save 41%  
OEM: 300-180, Item: 1405011
  In Stock, Usually ships within 1 business day
Select year, make, model above to verify this part fits your vehicle

GMC R3500 Engine Coolant Thermostat, OEM: 300-195/300195Motorad
1987-1991 GMC R3500 Motorad Engine Coolant Thermostat 300-195
1.35, Save 41%  
OEM: 300-195, Item: 1405012
  In Stock, Usually ships within 1 business day
Select year, make, model above to verify this part fits your vehicle

GMC R3500 Engine Coolant Thermostat, OEM: 206-160/206160Motorad
1987-1991 GMC R3500 Motorad Engine Coolant Thermostat 206-160
1.65, Save 40%   POPULAR
OEM: 206-160, Item: 1404927
  Only 4 left In Stock, Usually ships within 1 business day
Select year, make, model above to verify this part fits your vehicle

GMC R3500 Engine Coolant Thermostat, OEM: 206-180/206180Motorad
1987-1991 GMC R3500 Motorad Engine Coolant Thermostat 206-180
1.75, Save 39%   NEW ITEM
OEM: 206-180, Item: 1404928
  Only 1 left In Stock, Usually ships within 1 business day
Select year, make, model above to verify this part fits your vehicle

GMC R3500 Engine Coolant Thermostat, OEM: 13006Stant
1987-1991 GMC R3500 Stant Engine Coolant Thermostat 13006
1.85, Save 40%   NEW ITEM
OEM: 13006, Item: 642449
  In Stock, Usually ships within 1 business day
Select year, make, model above to verify this part fits your vehicle

GMC R3500 Engine Coolant Thermostat, OEM: 13008Stant
1987-1991 GMC R3500 Stant Engine Coolant Thermostat 13008
1.85, Save 40%   NEW ITEM
OEM: 13008, Item: 642450
  In Stock, Usually ships within 1 business day
Select year, make, model above to verify this part fits your vehicle

GMC R3500 Engine Coolant Thermostat, OEM: 13009Stant
1987-1991 GMC R3500 Stant Engine Coolant Thermostat 13009
1.85, Save 40%   NEW ITEM
OEM: 13009, Item: 642451
  In Stock, Usually ships within 1 business day
Select year, make, model above to verify this part fits your vehicle

GMC R3500 Engine Coolant Thermostat, OEM: 12TE1BACDelco
1987-1991 GMC R3500 ACDelco Engine Coolant Thermostat 12TE1B
2.15, Save 40%   NEW ITEM
OEM: 12TE1B, Item: 885094
  In Stock, Usually ships within 1 business day
Select year, make, model above to verify this part fits your vehicle

GMC R3500 Engine Coolant Thermostat, OEM: 12TE1DACDelco
1987-1991 GMC R3500 ACDelco Engine Coolant Thermostat 12TE1D
2.15, Save 40%   NEW ITEM
OEM: 12TE1D, Item: 885095
  In Stock, Usually ships within 1 business day
Select year, make, model above to verify this part fits your vehicle

GMC R3500 Engine Coolant Thermostat, OEM: 12TE1EACDelco
1987-1991 GMC R3500 ACDelco Engine Coolant Thermostat 12TE1E
2.15, Save 40%   NEW ITEM
OEM: 12TE1E, Item: 890423
  In Stock, Usually ships within 1 business day
Select year, make, model above to verify this part fits your vehicle

GMC R3500 Engine Coolant Thermostat, OEM: 200-160/200160Motorad
1987-1991 GMC R3500 Motorad Engine Coolant Thermostat 200-160
2.25, Save 42%   POPULAR
OEM: 200-160, Item: 1404893
  In Stock, Usually ships within 1 business day
Select year, make, model above to verify this part fits your vehicle

GMC R3500 Engine Coolant Thermostat, OEM: 12T6DACDelco
1987-1991 GMC R3500 ACDelco Engine Coolant Thermostat 12T6D
2.25, Save 40%  
OEM: 12T6D, Item: 885184
  In Stock, Usually ships within 1 business day
Select year, make, model above to verify this part fits your vehicle

GMC R3500 Engine Coolant Thermostat, OEM: 200-195/200195Motorad
1987-1991 GMC R3500 Motorad Engine Coolant Thermostat 200-195
2.35, Save 39%   NEW ITEM
OEM: 200-195, Item: 1404895
  Only 8 left In Stock, Usually ships within 1 business day
Select year, make, model above to verify this part fits your vehicle

GMC R3500 Engine Coolant Thermostat, OEM: 33508Gates
1987-1991 GMC R3500 Gates Engine Coolant Thermostat 33508
2.85, Save 39%  
OEM: 33508, Item: 667740
  In Stock, Usually ships within 1 business day
Select year, make, model above to verify this part fits your vehicle

GMC R3500 Engine Coolant Thermostat, OEM: 33509Gates
1987-1991 GMC R3500 Gates Engine Coolant Thermostat 33509
2.85, Save 39%   NEW ITEM
OEM: 33509, Item: 675470
  In Stock, Usually ships within 1 business day
Select year, make, model above to verify this part fits your vehicle

GMC R3500 Engine Coolant Thermostat, OEM: 203-180/203180Motorad
1991 GMC R3500 Motorad Engine Coolant Thermostat 203-180
2.85, Save 40%   NEW ITEM
OEM: 203-180, Item: 1404913
  Only 4 left In Stock, Usually ships within 1 business day
Select year, make, model above to verify this part fits your vehicle

GMC R3500 Engine Coolant Thermostat, OEM: 203-195/203195Motorad
1991 GMC R3500 Motorad Engine Coolant Thermostat 203-195
2.85, Save 40%   NEW ITEM
OEM: 203-195, Item: 1404914
  Only 4 left In Stock, Usually ships within 1 business day
Select year, make, model above to verify this part fits your vehicle

GMC R3500 Engine Coolant Thermostat, OEM: 33010Gates
1987-1991 GMC R3500 Gates Engine Coolant Thermostat 33010
3.25, Save 40%   NEW ITEM
OEM: 33010, Item: 669900
  Only 1 left In Stock, Usually ships within 1 business day
Select year, make, model above to verify this part fits your vehicle

GMC R3500 Engine Coolant Thermostat, OEM: 13359Stant
1987-1991 GMC R3500 Stant Engine Coolant Thermostat 13359
3.35, Save 40%   NEW ITEM
OEM: 13359, Item: 383502
  In Stock, Usually ships within 1 business day
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GMC R3500 Engine Coolant Thermostat, OEM: 13849Stant
1991 GMC R3500 Stant Engine Coolant Thermostat 13849
3.35, Save 40%   NEW ITEM
OEM: 13849, Item: 383555
  In Stock, Usually ships within 1 business day
Select year, make, model above to verify this part fits your vehicle

GMC R3500 Engine Coolant Thermostat, OEM: 13352Stant
1987-1991 GMC R3500 Stant Engine Coolant Thermostat 13352
3.35, Save 41%   NEW ITEM
OEM: 13352, Item: 642456
  Only 7 left In Stock, Usually ships within 1 business day
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GMC R3500 Engine Coolant Thermostat, OEM: 13848Stant
1991 GMC R3500 Stant Engine Coolant Thermostat 13848
3.35, Save 41%   NEW ITEM
OEM: 13848, Item: 642509
  In Stock, Usually ships within 1 business day
Select year, make, model above to verify this part fits your vehicle

GMC R3500 Engine Coolant Thermostat, OEM: 33006Gates
1987-1991 GMC R3500 Gates Engine Coolant Thermostat 33006
3.45, Save 40%   NEW ITEM
OEM: 33006, Item: 621043
  Only 4 left In Stock, Usually ships within 1 business day
Select year, make, model above to verify this part fits your vehicle

GMC R3500 Engine Coolant Thermostat, OEM: 33008Gates
1987-1991 GMC R3500 Gates Engine Coolant Thermostat 33008
3.45, Save 40%  
OEM: 33008, Item: 667724
  Only 5 left In Stock, Usually ships within 1 business day
Select year, make, model above to verify this part fits your vehicle

GMC R3500 Engine Coolant Thermostat, OEM: 33009Gates
1987-1991 GMC R3500 Gates Engine Coolant Thermostat 33009
3.45, Save 40%   NEW ITEM
OEM: 33009, Item: 669899
  In Stock, Usually ships within 1 business day
Select year, make, model above to verify this part fits your vehicle

GMC R3500 Engine Coolant Thermostat, OEM: 13356Stant
1987-1991 GMC R3500 Stant Engine Coolant Thermostat 13356
3.55, Save 39%  
OEM: 13356, Item: 383500
  In Stock, Usually ships within 1 business day
Select year, make, model above to verify this part fits your vehicle

GMC R3500 Engine Coolant Thermostat, OEM: 13358Stant
1987-1991 GMC R3500 Stant Engine Coolant Thermostat 13358
3.55, Save 39%   POPULAR
OEM: 13358, Item: 383501
  In Stock, Usually ships within 1 business day
Select year, make, model above to verify this part fits your vehicle

GMC R3500 Engine Coolant Thermostat, OEM: 12T1DACDelco
1987-1991 GMC R3500 ACDelco Engine Coolant Thermostat 12T1D
3.55, Save 39%   NEW ITEM
OEM: 12T1D, Item: 885136
  In Stock, Usually ships within 1 business day
Select year, make, model above to verify this part fits your vehicle

GMC R3500 Engine Coolant Thermostat, OEM: 12T1FACDelco
1987-1991 GMC R3500 ACDelco Engine Coolant Thermostat 12T1F
3.55, Save 39%   NEW ITEM
OEM: 12T1F, Item: 1215357
  In Stock, Usually ships within 1 business day
Select year, make, model above to verify this part fits your vehicle

GMC R3500 Engine Coolant Thermostat, OEM: 12T4DACDelco
1991 GMC R3500 ACDelco Engine Coolant Thermostat 12T4D
3.55, Save 40%   NEW ITEM
OEM: 12T4D, Item: 885172
  In Stock, Usually ships within 1 business day
Select year, make, model above to verify this part fits your vehicle

GMC R3500 Engine Coolant Thermostat, OEM: 12T1BACDelco
1987-1991 GMC R3500 ACDelco Engine Coolant Thermostat 12T1B
3.65, Save 41%   NEW ITEM
OEM: 12T1B, Item: 885135
  In Stock, Usually ships within 1 business day
Select year, make, model above to verify this part fits your vehicle

GMC R3500 Engine Coolant Thermostat, OEM: 12T1EACDelco
1987-1991 GMC R3500 ACDelco Engine Coolant Thermostat 12T1E
3.65, Save 40%   NEW ITEM
OEM: 12T1E, Item: 890426
  In Stock, Usually ships within 1 business day
Select year, make, model above to verify this part fits your vehicle

GMC R3500 Engine Coolant Thermostat, OEM: 12T4EACDelco
1991 GMC R3500 ACDelco Engine Coolant Thermostat 12T4E
3.65, Save 40%   NEW ITEM
OEM: 12T4E, Item: 890429
  In Stock, Usually ships within 1 business day
Select year, make, model above to verify this part fits your vehicle

GMC R3500 Thermostat, 82C / 180F, OEM: 9605555382Motorad
1991 GMC R3500 Motorad Thermostat, 82C / 180F 9605555382
3.85, Save 27%   NEW ITEM
OEM: 9605555382, Item: 100181
  In Stock, Usually ships within 1 business day
Select year, make, model above to verify this part fits your vehicle

GMC R3500 Engine Coolant Thermostat, OEM: 2000-160/2000160Motorad
1987-1991 GMC R3500 Motorad Engine Coolant Thermostat 2000-160
3.95, Save 40%   NEW ITEM
OEM: 2000-160, Item: 1404889
  In Stock, Usually ships within 1 business day
Select year, make, model above to verify this part fits your vehicle

GMC R3500 Engine Coolant Thermostat, OEM: 2000-180/2000180Motorad
1987-1991 GMC R3500 Motorad Engine Coolant Thermostat 2000-180
3.95, Save 40%   NEW ITEM
OEM: 2000-180, Item: 1404890
  In Stock, Usually ships within 1 business day
Select year, make, model above to verify this part fits your vehicle

GMC R3500 Engine Coolant Thermostat, OEM: 2000-195/2000195Motorad
1987-1991 GMC R3500 Motorad Engine Coolant Thermostat 2000-195
3.95, Save 40%   NEW ITEM
OEM: 2000-195, Item: 1404891
  Only 7 left In Stock, Usually ships within 1 business day
Select year, make, model above to verify this part fits your vehicle

GMC R3500 Engine Coolant Thermostat, OEM: 2006-180/2006180Motorad
1987-1991 GMC R3500 Motorad Engine Coolant Thermostat 2006-180
3.95, Save 40%   NEW ITEM
OEM: 2006-180, Item: 1404901
  Only 2 left In Stock, Usually ships within 1 business day
Select year, make, model above to verify this part fits your vehicle

GMC R3500 Gates Engine Coolant Thermostat, OEM: 33428Gates
1991 GMC R3500 Gates Engine Coolant Thermostat
3.95, Save 39%   NEW ITEM
OEM: 33428, Item: 242995
  In Stock, Usually ships within 1 business day
Select year, make, model above to verify this part fits your vehicle

GMC R3500 Gates Engine Coolant Thermostat, OEM: 33429Gates
1991 GMC R3500 Gates Engine Coolant Thermostat
3.95, Save 39%   NEW ITEM
OEM: 33429, Item: 242994
  In Stock, Usually ships within 1 business day
Select year, make, model above to verify this part fits your vehicle

GMC R3500 Engine Coolant Thermostat, OEM: 2003-180/2003180Motorad
1991 GMC R3500 Motorad Engine Coolant Thermostat 2003-180
4.15, Save 39%   NEW ITEM
OEM: 2003-180, Item: 1404898
  Only 6 left In Stock, Usually ships within 1 business day
Select year, make, model above to verify this part fits your vehicle

GMC R3500 Engine Coolant Thermostat, OEM: 12T6BACDelco
1987-1991 GMC R3500 ACDelco Engine Coolant Thermostat 12T6B
4.35, Save 39%  
OEM: 12T6B, Item: 885183
  Only 4 left In Stock, Usually ships within 1 business day
Select year, make, model above to verify this part fits your vehicle

GMC R3500 Engine Coolant Thermostat, OEM: 2003-195/2003195Motorad
1991 GMC R3500 Motorad Engine Coolant Thermostat 2003-195
4.45, Save 40%   NEW ITEM
OEM: 2003-195, Item: 1404899
  Only 2 left In Stock, Usually ships within 1 business day
Select year, make, model above to verify this part fits your vehicle

GMC R3500 Engine Coolant Thermostat, OEM: 45356Stant
1987-1991 GMC R3500 Stant Engine Coolant Thermostat 45356
4.45, Save 39%   NEW ITEM
OEM: 45356, Item: 642632
  In Stock, Usually ships within 1 business day
Select year, make, model above to verify this part fits your vehicle

GMC R3500 Engine Coolant Thermostat, OEM: 45358Stant
1987-1991 GMC R3500 Stant Engine Coolant Thermostat 45358
4.45, Save 39%  
OEM: 45358, Item: 642633
  In Stock, Usually ships within 1 business day
Select year, make, model above to verify this part fits your vehicle

GMC R3500 Engine Coolant Thermostat, OEM: 45359Stant
1987-1991 GMC R3500 Stant Engine Coolant Thermostat 45359
4.45, Save 39%   NEW ITEM
OEM: 45359, Item: 642634
  In Stock, Usually ships within 1 business day
Select year, make, model above to verify this part fits your vehicle

GMC R3500 Engine Coolant Thermostat, OEM: 33006SGates
1987-1991 GMC R3500 Gates Engine Coolant Thermostat 33006S
4.55, Save 40%   NEW ITEM
OEM: 33006S, Item: 667723
  In Stock, Usually ships within 1 business day
Select year, make, model above to verify this part fits your vehicle

GMC R3500 Engine Coolant Thermostat, OEM: 33008SGates
1987-1991 GMC R3500 Gates Engine Coolant Thermostat 33008S
4.55, Save 40%   NEW ITEM
OEM: 33008S, Item: 667725
  Only 4 left In Stock, Usually ships within 1 business day
Select year, make, model above to verify this part fits your vehicle

GMC R3500 Engine Coolant Thermostat, OEM: 33009SGates
1987-1991 GMC R3500 Gates Engine Coolant Thermostat 33009S
4.55, Save 40%   NEW ITEM
OEM: 33009S, Item: 667726
  Only 7 left In Stock, Usually ships within 1 business day
Select year, make, model above to verify this part fits your vehicle

GMC R3500 Engine Coolant Thermostat, OEM: 12TP1BACDelco
1987-1991 GMC R3500 ACDelco Engine Coolant Thermostat 12TP1B
4.65, Save 40%   NEW ITEM
OEM: 12TP1B, Item: 885117
  In Stock, Usually ships within 1 business day
Select year, make, model above to verify this part fits your vehicle

GMC R3500 Engine Coolant Thermostat, OEM: 12TP1DACDelco
1987-1991 GMC R3500 ACDelco Engine Coolant Thermostat 12TP1D
4.65, Save 39%   NEW ITEM
OEM: 12TP1D, Item: 885118
  In Stock, Usually ships within 1 business day
Select year, make, model above to verify this part fits your vehicle

GMC R3500 Engine Coolant Thermostat, OEM: 12TP1EACDelco
1987-1991 GMC R3500 ACDelco Engine Coolant Thermostat 12TP1E
4.75, Save 39%   NEW ITEM
OEM: 12TP1E, Item: 890424
  In Stock, Usually ships within 1 business day
Select year, make, model above to verify this part fits your vehicle

GMC R3500 Engine Coolant Thermostat, OEM: 12TP5DACDelco
1987-1991 GMC R3500 ACDelco Engine Coolant Thermostat 12TP5D
4.85, Save 40%   NEW ITEM
OEM: 12TP5D, Item: 885128
  In Stock, Usually ships within 1 business day
Select year, make, model above to verify this part fits your vehicle

GMC R3500 Engine Coolant Thermostat, OEM: 45848Stant
1991 GMC R3500 Stant Engine Coolant Thermostat 45848
5.25, Save 40%   NEW ITEM
OEM: 45848, Item: 642652
  In Stock, Usually ships within 1 business day
Select year, make, model above to verify this part fits your vehicle

GMC R3500 Engine Coolant Thermostat, OEM: 45849Stant
1991 GMC R3500 Stant Engine Coolant Thermostat 45849
5.25, Save 40%   NEW ITEM
OEM: 45849, Item: 642653
  In Stock, Usually ships within 1 business day
Select year, make, model above to verify this part fits your vehicle

GMC R3500 Engine Coolant Thermostat, OEM: 33428SGates
1991 GMC R3500 Gates Engine Coolant Thermostat 33428S
5.35, Save 40%   NEW ITEM
OEM: 33428S, Item: 667736
  Only 4 left In Stock, Usually ships within 1 business day
Select year, make, model above to verify this part fits your vehicle

GMC R3500 Engine Coolant Thermostat, OEM: 33429SGates
1991 GMC R3500 Gates Engine Coolant Thermostat 33429S
5.35, Save 40%   NEW ITEM
OEM: 33429S, Item: 1159560
  Only 2 left In Stock, Usually ships within 1 business day
Select year, make, model above to verify this part fits your vehicle

GMC R3500 Engine Coolant Thermostat, OEM: 12TP4DACDelco
1991 GMC R3500 ACDelco Engine Coolant Thermostat 12TP4D
5.55, Save 39%   NEW ITEM
OEM: 12TP4D, Item: 885126
  Only 6 left In Stock, Usually ships within 1 business day
Select year, make, model above to verify this part fits your vehicle

GMC R3500 Engine Coolant Thermostat, OEM: 12TP4EACDelco
1991 GMC R3500 ACDelco Engine Coolant Thermostat 12TP4E
5.55, Save 39%   NEW ITEM
OEM: 12TP4E, Item: 885127
  In Stock, Usually ships within 1 business day
Select year, make, model above to verify this part fits your vehicle

GMC R3500 Engine Coolant Thermostat, OEM: 7200-160/7200160Motorad
1987-1991 GMC R3500 Motorad Engine Coolant Thermostat 7200-160
5.75, Save 40%   NEW ITEM
OEM: 7200-160, Item: 1409345
  Only 3 left In Stock, Usually ships within 1 business day
Select year, make, model above to verify this part fits your vehicle

GMC R3500 Engine Coolant Thermostat, OEM: 7200-180/7200180Motorad
1987-1991 GMC R3500 Motorad Engine Coolant Thermostat 7200-180
5.75, Save 40%   NEW ITEM
OEM: 7200-180, Item: 1405138
  In Stock, Usually ships within 1 business day
Select year, make, model above to verify this part fits your vehicle

GMC R3500 Engine Coolant Thermostat, OEM: 7203-195/7203195Motorad
1991 GMC R3500 Motorad Engine Coolant Thermostat 7203-195
5.75, Save 40%   NEW ITEM
OEM: 7203-195, Item: 1405139
  Only 1 left In Stock, Usually ships within 1 business day
Select year, make, model above to verify this part fits your vehicle

GMC R3500 Engine Coolant Thermostat, OEM: 7200-195/7200195Motorad
1987-1991 GMC R3500 Motorad Engine Coolant Thermostat 7200-195
5.85, Save 39%   NEW ITEM
OEM: 7200-195, Item: 1409346
  In Stock, Usually ships within 1 business day
Select year, make, model above to verify this part fits your vehicle

GMC R3500 Engine Coolant Thermostat, OEM: 131-87/13187ACDelco
1987-1990 GMC R3500 ACDelco Engine Coolant Thermostat 131-87
8.05, Save 39%   NEW ITEM
OEM: 131-87, Item: 887746
  Only 9 left In Stock, Usually ships within 1 business day
Select year, make, model above to verify this part fits your vehicle

GMC R3500 Engine Coolant Thermostat, OEM: 132-55/13255ACDelco
1987-1991 GMC R3500 ACDelco Engine Coolant Thermostat 132-55
10.45, Save 40%   NEW ITEM
OEM: 132-55, Item: 887750
  Only 8 left In Stock, Usually ships within 1 business day
Select year, make, model above to verify this part fits your vehicle

GMC R3500 Engine Coolant Thermostat, OEM: 131-122/131122ACDelco
1991 GMC R3500 ACDelco Engine Coolant Thermostat 131-122
12.85, Save 40%   NEW ITEM
OEM: 131-122, Item: 887724
  Only 7 left In Stock, Usually ships within 1 business day
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Mr. Gasket
1987-1991 GMC R3500 Mr. Gasket Engine Coolant Thermostat 4363
Add for Price, Save 38%   NEW ITEM
OEM: 4363, Item: 1397837
  Only 4 left In Stock, Usually ships within 1 business day
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Mr. Gasket
1987-1991 GMC R3500 Mr. Gasket Engine Coolant Thermostat 4364
Add for Price, Save 38%   NEW ITEM
OEM: 4364, Item: 1397838
  Only 1 left In Stock, Usually ships within 1 business day
Select year, make, model above to verify this part fits your vehicle

GMC R3500 Engine Coolant Thermostat, OEM: 14429Stant
1987-1991 GMC R3500 Stant Engine Coolant Thermostat 14429
18.05, Save 39%   NEW ITEM
OEM: 14429, Item: 383624
  In Stock, Usually ships within 1 business day
Select year, make, model above to verify this part fits your vehicle

GMC R3500 Gates Engine Coolant Thermostat, OEM: 33924Gates
1987-1991 GMC R3500 Gates Engine Coolant Thermostat
19.85, Save 40%   NEW ITEM
OEM: 33924, Item: 242868
  Only 4 left In Stock, Usually ships within 1 business day
Select year, make, model above to verify this part fits your vehicle

GMC R3500 Engine Coolant Thermostat, OEM: MMTS-WRA-87L/MMTSWRA87LMishimoto
1987-1988, 1991 GMC R3500 Mishimoto Engine Coolant Thermostat MMTS-WRA-87L
Add for Price, Save 36%   NEW ITEM
OEM: MMTS-WRA-87L, Item: 1335663
  Only 8 left In Stock, Usually ships within 1-2 business days
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GMC R3500 Engine Coolant Thermostat, OEM: MMTS-MUS-86/MMTSMUS86Mishimoto
1987-1988, 1991 GMC R3500 Mishimoto Engine Coolant Thermostat MMTS-MUS-86
Add for Price, Save 36%   NEW ITEM
OEM: MMTS-MUS-86, Item: 1335775
  Only 1 left In Stock, Usually ships within 1-2 business days
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Mishimoto
1987-1988, 1991 GMC R3500 Mishimoto Engine Coolant Thermostat MMTS-MUS-86A
Add for Price, Save 36%   NEW ITEM
OEM: MMTS-MUS-86A, Item: 1359008
  Only 2 left In Stock, Usually ships within 1-2 business days
Select year, make, model above to verify this part fits your vehicle

GMC R3500 Engine Coolant Thermostat, OEM: 200-180/200180Motorad
1987-1991 GMC R3500 Motorad Engine Coolant Thermostat 200-180
2.45, Save 40%   NO STOCK
OEM: 200-180, Item: 1404894
  Restock date not known
Select year, make, model above to verify this part fits your vehicle

Motorad
1987-1991 GMC R3500 Motorad Engine Coolant Thermostat 200-205
2.65, Save 40%   NO STOCK
OEM: 200-205, Item: 1415829
  Restock date not known
Select year, make, model above to verify this part fits your vehicle

GMC R3500 Engine Coolant Thermostat, OEM: 131-73/13173ACDelco
1987-1991 GMC R3500 ACDelco Engine Coolant Thermostat 131-73
8.95, Save 39%   NO STOCK
OEM: 131-73, Item: 887742
  Restock date not known
Select year, make, model above to verify this part fits your vehicle