1999 GMC Sierra 2500 Engine Coolant Thermostat
Browse our online catalogue to find original replacement Engine Coolant Thermostats specifically designed to fit a 1999 GMC Sierra 2500.





1999 GMC Sierra 2500 Engine Coolant Thermostat
$34.04
10+ In Stock
Condition: New
Ships: Monday Apr. 13th
Pick-Up: Ready in 1 Hour Saturday Apr. 11th
Pick-Up: Ready in 1 Hour Saturday Apr. 11th
Required Per Vehicle: 1
Fits: 1999 GMC Sierra 2500
Equipped With:
Engine Base: 5.3L 5328cc 325ci V8 (3.78x3.62; 96.0x92.0);
Engine Base: 5.3L 5328cc 325ci V8 (3.78x3.62; 96.0x92.0);
Vehicle Fitment Notes:
with Replacement Late Model Water Pump Requiring Seperate Thermostat and Housing; Thermostat Only OE Specified Temperature Temperature 187F Includes seal
with Replacement Late Model Water Pump Requiring Seperate Thermostat and Housing; Thermostat Only OE Specified Temperature Temperature 187F Includes seal





1999 GMC Sierra 2500 Engine Coolant Thermostat
$34.04
10+ In Stock
Condition: New
Ships: Monday Apr. 13th
Pick-Up: Ready in 1 Hour Saturday Apr. 11th
Pick-Up: Ready in 1 Hour Saturday Apr. 11th
Required Per Vehicle: 1
Fits: 1999 GMC Sierra 2500
Equipped With:
Engine Base: 6.0L 5967cc 364ci V8 (4.00x3.62; 101.6x92.0);
Engine Base: 6.0L 5967cc 364ci V8 (4.00x3.62; 101.6x92.0);
Vehicle Fitment Notes:
with Replacement Late Model Water Pump Requiring Seperate Thermostat and Housing; Thermostat Only OE Specified Temperature Temperature 187F Includes seal
with Replacement Late Model Water Pump Requiring Seperate Thermostat and Housing; Thermostat Only OE Specified Temperature Temperature 187F Includes seal





1999 GMC Sierra 2500 Engine Coolant Thermostat
$21.12
In Stock
Condition: New
Ships: Monday Apr. 13th
Pick-Up: Ready in 1 Hour Saturday Apr. 11th
Pick-Up: Ready in 1 Hour Saturday Apr. 11th
Required Per Vehicle: 1
Fits: 1999 GMC Sierra 2500
Equipped With:
Engine Base: 5.3L 5328cc 325ci V8 (3.78x3.62; 96.0x92.0);
Engine Base: 5.3L 5328cc 325ci V8 (3.78x3.62; 96.0x92.0);
Vehicle Fitment Notes:
with Replacement Late Model Water Pump Requiring Seperate Thermostat and Housing; Thermostat Only OE Specified Temperature Temperature 187F Includes seal
with Replacement Late Model Water Pump Requiring Seperate Thermostat and Housing; Thermostat Only OE Specified Temperature Temperature 187F Includes seal





1999 GMC Sierra 2500 Engine Coolant Thermostat
$21.12
In Stock
Condition: New
Ships: Monday Apr. 13th
Pick-Up: Ready in 1 Hour Saturday Apr. 11th
Pick-Up: Ready in 1 Hour Saturday Apr. 11th
Required Per Vehicle: 1
Fits: 1999 GMC Sierra 2500
Equipped With:
Engine Base: 6.0L 5967cc 364ci V8 (4.00x3.62; 101.6x92.0);
Engine Base: 6.0L 5967cc 364ci V8 (4.00x3.62; 101.6x92.0);
Vehicle Fitment Notes:
with Replacement Late Model Water Pump Requiring Seperate Thermostat and Housing; Thermostat Only OE Specified Temperature Temperature 187F Includes seal
with Replacement Late Model Water Pump Requiring Seperate Thermostat and Housing; Thermostat Only OE Specified Temperature Temperature 187F Includes seal





1999 GMC Sierra 2500 Engine Coolant Thermostat
$35.73
In Stock
Condition: New
Ships: Monday Apr. 13th
Pick-Up: Ready in 1 Hour Saturday Apr. 11th
Pick-Up: Ready in 1 Hour Saturday Apr. 11th
Required Per Vehicle: 1
Fits: 1999 GMC Sierra 2500
Equipped With:
Engine Base: 5.3L 5328cc 325ci V8 (3.78x3.62; 96.0x92.0);
Engine Base: 5.3L 5328cc 325ci V8 (3.78x3.62; 96.0x92.0);
Vehicle Fitment Notes:
with Replacement Late Model Water Pump Requiring Seperate Thermostat and Housing; Thermostat Only OE Specified Temperature "The patented Fail-Safe (R) thermostat is the only thermostat on the market designed to lock in the open position, allowing coolant to continue to flow in the event of overheating." Temperature 187F Includes seal
with Replacement Late Model Water Pump Requiring Seperate Thermostat and Housing; Thermostat Only OE Specified Temperature "The patented Fail-Safe (R) thermostat is the only thermostat on the market designed to lock in the open position, allowing coolant to continue to flow in the event of overheating." Temperature 187F Includes seal





1999 GMC Sierra 2500 Engine Coolant Thermostat
$35.73
In Stock
Condition: New
Ships: Monday Apr. 13th
Pick-Up: Ready in 1 Hour Saturday Apr. 11th
Pick-Up: Ready in 1 Hour Saturday Apr. 11th
Required Per Vehicle: 1
Fits: 1999 GMC Sierra 2500
Equipped With:
Engine Base: 6.0L 5967cc 364ci V8 (4.00x3.62; 101.6x92.0);
Engine Base: 6.0L 5967cc 364ci V8 (4.00x3.62; 101.6x92.0);
Vehicle Fitment Notes:
with Replacement Late Model Water Pump Requiring Seperate Thermostat and Housing; Thermostat Only OE Specified Temperature "The patented Fail-Safe (R) thermostat is the only thermostat on the market designed to lock in the open position, allowing coolant to continue to flow in the event of overheating." Temperature 187F Includes seal
with Replacement Late Model Water Pump Requiring Seperate Thermostat and Housing; Thermostat Only OE Specified Temperature "The patented Fail-Safe (R) thermostat is the only thermostat on the market designed to lock in the open position, allowing coolant to continue to flow in the event of overheating." Temperature 187F Includes seal





1999 GMC Sierra 2500 Engine Coolant Thermostat
$27.98
In Stock
Condition: New
Ships: Monday Apr. 13th
Pick-Up: Ready in 2-4 Hours Saturday Apr. 11th
Pick-Up: Ready in 2-4 Hours Saturday Apr. 11th
Required Per Vehicle: 1
Fits: 1999 GMC Sierra 2500
Equipped With:
Engine Base: 5.3L 5328cc 325ci V8 (3.78x3.62; 96.0x92.0);
Engine Base: 5.3L 5328cc 325ci V8 (3.78x3.62; 96.0x92.0);
Vehicle Fitment Notes:
with Replacement Late Model Water Pump Requiring Seperate Thermostat and Housing; Thermostat Only Alternate Temperature Option Temperature 160F Includes seal
with Replacement Late Model Water Pump Requiring Seperate Thermostat and Housing; Thermostat Only Alternate Temperature Option Temperature 160F Includes seal





1999 GMC Sierra 2500 Engine Coolant Thermostat
$27.98
In Stock
Condition: New
Ships: Monday Apr. 13th
Pick-Up: Ready in 2-4 Hours Saturday Apr. 11th
Pick-Up: Ready in 2-4 Hours Saturday Apr. 11th
Required Per Vehicle: 1
Fits: 1999 GMC Sierra 2500
Equipped With:
Engine Base: 6.0L 5967cc 364ci V8 (4.00x3.62; 101.6x92.0);
Engine Base: 6.0L 5967cc 364ci V8 (4.00x3.62; 101.6x92.0);
Vehicle Fitment Notes:
with Replacement Late Model Water Pump Requiring Seperate Thermostat and Housing; Thermostat Only Alternate Temperature Option Temperature 160F Includes seal
with Replacement Late Model Water Pump Requiring Seperate Thermostat and Housing; Thermostat Only Alternate Temperature Option Temperature 160F Includes seal





1999 GMC Sierra 2500 Engine Coolant Thermostat
$34.04
Limited Stock
Condition: New
Ships: Next Business Day
Pick-Up: Next Business Day
Pick-Up: Next Business Day
Required Per Vehicle: 1
Fits: 1999 GMC Sierra 2500
Equipped With:
Engine Base: 5.3L 5328cc 325ci V8 (3.78x3.62; 96.0x92.0);
Engine Base: 5.3L 5328cc 325ci V8 (3.78x3.62; 96.0x92.0);
Vehicle Fitment Notes:
with Replacement Late Model Water Pump Requiring Seperate Thermostat and Housing; Thermostat Only Alternate Temperature Option Temperature 180F Includes seal
with Replacement Late Model Water Pump Requiring Seperate Thermostat and Housing; Thermostat Only Alternate Temperature Option Temperature 180F Includes seal





1999 GMC Sierra 2500 Engine Coolant Thermostat
$34.04
Limited Stock
Condition: New
Ships: Next Business Day
Pick-Up: Next Business Day
Pick-Up: Next Business Day
Required Per Vehicle: 1
Fits: 1999 GMC Sierra 2500
Equipped With:
Engine Base: 6.0L 5967cc 364ci V8 (4.00x3.62; 101.6x92.0);
Engine Base: 6.0L 5967cc 364ci V8 (4.00x3.62; 101.6x92.0);
Vehicle Fitment Notes:
with Replacement Late Model Water Pump Requiring Seperate Thermostat and Housing; Thermostat Only Alternate Temperature Option Temperature 180F Includes seal
with Replacement Late Model Water Pump Requiring Seperate Thermostat and Housing; Thermostat Only Alternate Temperature Option Temperature 180F Includes seal





1999 GMC Sierra 2500 Engine Coolant Thermostat
$33.34
Out of Stock
Condition: New
Required Per Vehicle: 1
Fits: 1999 GMC Sierra 2500
Equipped With:
Engine Base: 5.3L 5328cc 325ci V8 (3.78x3.62; 96.0x92.0);
Engine Base: 5.3L 5328cc 325ci V8 (3.78x3.62; 96.0x92.0);
Vehicle Fitment Notes:
with Replacement Late Model Water Pump Requiring Seperate Thermostat and Housing; Thermostat Only OE Specified Temperature
with Replacement Late Model Water Pump Requiring Seperate Thermostat and Housing; Thermostat Only OE Specified Temperature





1999 GMC Sierra 2500 Engine Coolant Thermostat
$33.34
Out of Stock
Condition: New
Required Per Vehicle: 1
Fits: 1999 GMC Sierra 2500
Equipped With:
Engine Base: 6.0L 5967cc 364ci V8 (4.00x3.62; 101.6x92.0);
Engine Base: 6.0L 5967cc 364ci V8 (4.00x3.62; 101.6x92.0);
Vehicle Fitment Notes:
with Replacement Late Model Water Pump Requiring Seperate Thermostat and Housing; Thermostat Only OE Specified Temperature
with Replacement Late Model Water Pump Requiring Seperate Thermostat and Housing; Thermostat Only OE Specified Temperature





1999 GMC Sierra 2500 Engine Coolant Thermostat
Call for Pricing
Out of Stock
Condition: New
Required Per Vehicle: 1
Fits: 1999 GMC Sierra 2500
Equipped With:
Engine Base: 5.3L 5328cc 325ci V8 (3.78x3.62; 96.0x92.0);
Engine Base: 5.3L 5328cc 325ci V8 (3.78x3.62; 96.0x92.0);
Vehicle Fitment Notes:
with Replacement Late Model Water Pump Requiring Seperate Thermostat and Housing; Thermostat Only Alternate Temperature Option
with Replacement Late Model Water Pump Requiring Seperate Thermostat and Housing; Thermostat Only Alternate Temperature Option





1999 GMC Sierra 2500 Engine Coolant Thermostat
Call for Pricing
Out of Stock
Condition: New
Required Per Vehicle: 1
Fits: 1999 GMC Sierra 2500
Equipped With:
Engine Base: 6.0L 5967cc 364ci V8 (4.00x3.62; 101.6x92.0);
Engine Base: 6.0L 5967cc 364ci V8 (4.00x3.62; 101.6x92.0);
Vehicle Fitment Notes:
with Replacement Late Model Water Pump Requiring Seperate Thermostat and Housing; Thermostat Only Alternate Temperature Option
with Replacement Late Model Water Pump Requiring Seperate Thermostat and Housing; Thermostat Only Alternate Temperature Option





1999 GMC Sierra 2500 Engine Coolant Thermostat
Call for Pricing
Out of Stock
Condition: New
Required Per Vehicle: 1
Fits: 1999 GMC Sierra 2500
Equipped With:
Engine Base: 5.3L 5328cc 325ci V8 (3.78x3.62; 96.0x92.0);
Engine Base: 5.3L 5328cc 325ci V8 (3.78x3.62; 96.0x92.0);
Vehicle Fitment Notes:
with Replacement Late Model Water Pump Requiring Seperate Thermostat and Housing; Thermostat Only Alternate Temperature Option
with Replacement Late Model Water Pump Requiring Seperate Thermostat and Housing; Thermostat Only Alternate Temperature Option





1999 GMC Sierra 2500 Engine Coolant Thermostat
Call for Pricing
Out of Stock
Condition: New
Required Per Vehicle: 1
Fits: 1999 GMC Sierra 2500
Equipped With:
Engine Base: 6.0L 5967cc 364ci V8 (4.00x3.62; 101.6x92.0);
Engine Base: 6.0L 5967cc 364ci V8 (4.00x3.62; 101.6x92.0);
Vehicle Fitment Notes:
with Replacement Late Model Water Pump Requiring Seperate Thermostat and Housing; Thermostat Only Alternate Temperature Option
with Replacement Late Model Water Pump Requiring Seperate Thermostat and Housing; Thermostat Only Alternate Temperature Option





1999 GMC Sierra 2500 Engine Coolant Thermostat
Call for Pricing
Out of Stock
Condition: New
Required Per Vehicle: 1
Fits: 1999 GMC Sierra 2500
Equipped With:
Engine Base: 5.3L 5328cc 325ci V8 (3.78x3.62; 96.0x92.0);
Engine Base: 5.3L 5328cc 325ci V8 (3.78x3.62; 96.0x92.0);
Vehicle Fitment Notes:
with Replacement Late Model Water Pump Requiring Seperate Thermostat and Housing; Thermostat Only OE Specified Temperature
with Replacement Late Model Water Pump Requiring Seperate Thermostat and Housing; Thermostat Only OE Specified Temperature





1999 GMC Sierra 2500 Engine Coolant Thermostat
Call for Pricing
Out of Stock
Condition: New
Required Per Vehicle: 1
Fits: 1999 GMC Sierra 2500
Equipped With:
Engine Base: 6.0L 5967cc 364ci V8 (4.00x3.62; 101.6x92.0);
Engine Base: 6.0L 5967cc 364ci V8 (4.00x3.62; 101.6x92.0);
Vehicle Fitment Notes:
with Replacement Late Model Water Pump Requiring Seperate Thermostat and Housing; Thermostat Only OE Specified Temperature
with Replacement Late Model Water Pump Requiring Seperate Thermostat and Housing; Thermostat Only OE Specified Temperature
1999 GMC Sierra 2500 Engine Coolant Thermostat
Call for Pricing
Out of Stock
Condition: New
Required Per Vehicle: 1
Fits: 1999 GMC Sierra 2500
Equipped With:
Engine Base: 5.3L 5328cc 325ci V8 (3.78x3.62; 96.0x92.0);
Engine Base: 5.3L 5328cc 325ci V8 (3.78x3.62; 96.0x92.0);
Vehicle Fitment Notes:
with Replacement Late Model Water Pump Requiring Seperate Thermostat and Housing; Thermostat Only OE Specified Temperature
with Replacement Late Model Water Pump Requiring Seperate Thermostat and Housing; Thermostat Only OE Specified Temperature
1999 GMC Sierra 2500 Engine Coolant Thermostat
Call for Pricing
Out of Stock
Condition: New
Required Per Vehicle: 1
Fits: 1999 GMC Sierra 2500
Equipped With:
Engine Base: 6.0L 5967cc 364ci V8 (4.00x3.62; 101.6x92.0);
Engine Base: 6.0L 5967cc 364ci V8 (4.00x3.62; 101.6x92.0);
Vehicle Fitment Notes:
with Replacement Late Model Water Pump Requiring Seperate Thermostat and Housing; Thermostat Only OE Specified Temperature
with Replacement Late Model Water Pump Requiring Seperate Thermostat and Housing; Thermostat Only OE Specified Temperature