Gaskets & Sealing Systems for 2025 GMC Sierra 2500 HD
No.
Part # / Description / Price
Price
1
Acdelco™ Engine Water Pump 
GM
GM Description: Silverado, Sierra 2500 HD. Silverado, Sierra 3500 HD. Silverado, sierra. 6.6l.
2
Water Pump Gasket GM
GM Notes: PARTS: Part included with water pump.
Description: 6.6L diesel. Silverado, sierra. 6.6l. Silverado, Sierra 2500 HD. O-ring. Silverado, Sierra 3500 HD.
MSRP $18.13 CAD
$15.98 CAD
MSRP $18.13 CAD
$15.98 CAD
4
MSRP $25.31 CAD
$22.31 CAD
5
MSRP $7.29 CAD
$6.45 CAD
7
Thermostat Housing GM
GM Description: 6.6L diesel. Silverado, sierra. 6.6l. Silverado, Sierra 2500 HD. Silverado, Sierra 3500 HD.
MSRP $297.12 CAD
$190.90 CAD
MSRP $297.12 CAD
$190.90 CAD
7
Acdelco™ Thermostat Housing GM
GM Description: 6.6L diesel. Silverado, sierra. 6.6l. Silverado, Sierra 2500 HD. Silverado, Sierra 3500 HD.
8
MSRP $12.19 CAD
$9.23 CAD
9
Thermostat Housing Bolt GM
GM Description: 6.6L diesel. Threads Into Side of Bearing Cap. 8 x 1.25 x 25mm.
MSRP $14.71 CAD
$12.96 CAD
MSRP $14.71 CAD
$12.96 CAD
10
MSRP $8.80 CAD
$7.77 CAD
11
MSRP $5.44 CAD
$4.80 CAD
12
By-Pass Hose GM
GM Description: Silverado, Sierra 2500 HD. Silverado, Sierra 3500 HD.
MSRP $87.82 CAD
$61.96 CAD
MSRP $87.82 CAD
$61.96 CAD
13
By-Pass Pipe Seal GM
GM Notes: PARTS: Part included with by-pass pipe.
Description: 6.6L diesel.
MSRP $5.70 CAD
$5.03 CAD
MSRP $5.70 CAD
$5.03 CAD
14
By-Pass Pipe Gasket GM
GM Description: 6.6L diesel. Bypass Pipe to Water Pump.
MSRP $5.70 CAD
$5.03 CAD
MSRP $5.70 CAD
$5.03 CAD
15
Thermostat GM
GM Description: 6.6L diesel, 180 deg. Silverado, Sierra 2500 HD. 180 degrees. Silverado, Sierra 3500 HD. 180 degrees. Silverado, sierra. 6.6l. 180 degrees.
MSRP $115.18 CAD
$69.07 CAD
MSRP $115.18 CAD
$69.07 CAD
15
Acdelco™ Thermostat GM
GM Description: 6.6L diesel, 180 deg. Silverado, Sierra 2500 HD. 180 degrees. Silverado, Sierra 3500 HD. 180 degrees. 180 Degrees F. Optional. Silverado, sierra. 6.6l. 180 degrees.
16
Acdelco™ Thermostat GM
GM Description: 6.6L diesel, 185 deg. Silverado, Sierra 2500 HD. 185 degrees. Silverado, Sierra 3500 HD. 185 degrees. 185 Degrees F. Optional. Silverado, sierra. 6.6l. 185 degrees.
16
Thermostat GM
GM Description: 6.6L diesel, 185 deg. Silverado, Sierra 2500 HD. 185 degrees. Silverado, Sierra 3500 HD. 185 degrees. Silverado, sierra. 6.6l. 185 degrees.
MSRP $66.22 CAD
$41.39 CAD
MSRP $66.22 CAD
$41.39 CAD
18
Thermostat Seal GM
GM Description: 6.6L turbo diesel. Silverado, sierra. 6.6l. Silverado, Sierra 2500 HD. Silverado, Sierra 3500 HD. 6.6L diesel, 180 deg therm. 6.6L diesel, 185 deg.
MSRP $17.66 CAD
$15.62 CAD
MSRP $17.66 CAD
$15.62 CAD
20
Water Outlet GM
GM Description: 6.6L diesel. Silverado, Sierra 2500 HD. Silverado, Sierra 3500 HD.
MSRP $107.16 CAD
$69.43 CAD
MSRP $107.16 CAD
$69.43 CAD
21
MSRP $110.97 CAD
$71.90 CAD
22
Gasket GM
GM Notes: PARTS: Part included with outlet pipe.
Description: 6.6L diesel. Silverado, Sierra 2500 HD. Gasket. Silverado, Sierra 3500 HD. 2017-19.
MSRP $10.57 CAD
$9.30 CAD
MSRP $10.57 CAD
$9.30 CAD
23
Engine Coolant Pipe O-Ring GM
GM Description: Pipe to Oil Cooler. 2017-19. 6.6L turbo diesel.
MSRP $61.30 CAD
$38.31 CAD
MSRP $61.30 CAD
$38.31 CAD
23
Acdelco™ Engine Coolant Pipe O-Ring GM
GM Description: Pipe to Oil Cooler. Outlet pipe,seal. 2017-19 6.6L diesel. 6.6L turbo diesel.
Related Parts
Part # / Description / Price
Price
Engine Oil Cooler Gasket GM
GM Description: Oil Cooler Assy.to Relief Valve. Round Seal.
MSRP $45.89 CAD
$31.45 CAD
MSRP $45.89 CAD
$31.45 CAD
Engine Oil Cooler Gasket GM
GM Positions: Left
Description: Cooler to Oil Filter Adapter.
MSRP $19.89 CAD
$17.54 CAD
MSRP $19.89 CAD
$17.54 CAD
Engine Oil Cooler Gasket GM
GM Positions: Right
Description: Cooler to Oil Filter Adapter.
MSRP $19.63 CAD
$17.36 CAD
MSRP $19.63 CAD
$17.36 CAD
MSRP $13.11 CAD
$11.58 CAD
Engine Oil Cooler Gasket GM
GM Description: Oil Cooler Housing to Oil Filter Adapter.
MSRP $16.57 CAD
$14.64 CAD
MSRP $16.57 CAD
$14.64 CAD
Engine Oil Cooler Gasket GM
GM Description: Oil Cooler Assy.to Block. O-Ring.
MSRP $13.97 CAD
$12.35 CAD
MSRP $13.97 CAD
$12.35 CAD
Acdelco™ Engine Coolant Pipe O-Ring GM
GM Description: Pipe to Oil Cooler. Outlet pipe,seal. 2017-19 6.6L diesel. 6.6L turbo diesel.