Engine for 2012 GMC Sierra 3500 HD
No.
Part # / Description / Price
Price
N/A
Valve Cover Gasket 
GM
GM Description: Genuine GM OEM Valve Cover Gasket (MPN: 12628569) seals the valve cover to prevent oil leaks on your heavy-duty truck or van. This upper gasket fits 2015-2016 Chevrolet Silverado and GMC Sierra 6.6L diesel engines, as well as 2015-2016 Chevrolet Express an ...
MSRP $54.89
$35.64
MSRP $54.89
$35.64
N/A
Driver Side Engine Mount GM
GM Description: The GM OEM Driver Side Engine Mount (MPN: 25814752) is a genuine left-side engine mount engineered for 2015-2016 Chevrolet Silverado and GMC Sierra pickup trucks equipped with 6.6L Duramax diesel engines. This factory replacement mount reduces vibration an ...
MSRP $248.89
$155.35
MSRP $248.89
$155.35
N/A
Automatic Transmission Mount GM
GM Description: Silverado, sierra. 2wd. 2015-16 6.6L diesel. 2wd. Secures transmission
Helps absorb drivetrain vibrations, helping to create a comfortable ride
Designed to function with surrounding components
N/A
Automatic Transmission Mount GM
GM Description: Upgrade your Silverado or Sierra's drivetrain stability with this Genuine GM OEM Automatic Transmission Mount (MPN: 22739529), engineered for 2015-2016 4WD models equipped with the 6.6L diesel engine. This critical transmission mount secures the transmissi ...
MSRP $168.32
$106.30
MSRP $168.32
$106.30
N/A
Passenger Side Engine Mount GM
GM Description: The Genuine GM OEM Passenger Side Engine Mount (MPN: 25814754) is engineered to provide superior vibration isolation and durability for your diesel-powered truck. This right-side engine mount is specifically designed for 2015-2016 Chevrolet Silverado and G ...
MSRP $266.14
$166.11
MSRP $266.14
$166.11
N/A
6.6L 8-Cylinder Engine Assembly 1 GM
GM Notes: Does Not Include: Water Pump, Torsional Damper, Intake And Exhaust Manifolds, Distributor, Flywheel And Clutch Housing.
Description: Upgrade your heavy-duty truck's performance with this Genuine GM OEM 6.6L 8-Cylinder Engine Assembly (MPN: 12695793), engineered for Chevrolet Silverado, GMC Sierra, Chevrolet Express, and GMC Savana models. This complete engine block delivers reliable pow ...
MSRP $22,188.69
$21,767.10
MSRP $22,188.69
$21,767.10
N/A
Lower Valve Cover Gasket GM
GM Description: Genuine GM OEM Lower Valve Cover Gasket (MPN: 97321295) for 6.6L diesel engines in select Sierra, Silverado, Express, and Savana models (2015-2016). This sealed gasket prevents oil leaks between the valve cover and cylinder head, maintaining engine integri ...
MSRP $136.73
$86.36
MSRP $136.73
$86.36
1
Cylinder Head GM
GM Description: Upgrade your engine performance with the Genuine GM OEM Cylinder Head (MPN: 12690607), engineered for Silverado, Sierra, Express, and Savana trucks and vans. This critical engine component ensures proper combustion chamber sealing and valve operation, deli ...
MSRP $2,538.78
$1,577.35
MSRP $2,538.78
$1,577.35
2
Cylinder Head Gasket (1 mm) GM
GM Description: # Product Description
The GM Cylinder Head Gasket (1 mm), OEM part number 12637789, is a precision-engineered engine seal designed to maintain compression and prevent fluid leakage between the cylinder head and engine block on select GM vehicles including ...
MSRP $111.77
$70.59
MSRP $111.77
$70.59
2
Cylinder Head Gasket (1.05 mm) GM
GM Description: The Genuine GM OEM Cylinder Head Gasket (MPN: 12637785) is a critical engine sealing component engineered to prevent coolant and oil leakage between the cylinder head and engine block on select GM vehicles including the Express, Savana, Sierra, and Silvera ...
MSRP $129.50
$81.79
MSRP $129.50
$81.79
2
Cylinder Head Gasket (1 mm) GM
GM Description: The GM OEM Cylinder Head Gasket (1 mm), MPN 12637786, is a precision-engineered engine seal designed to prevent coolant and oil leakage between the cylinder head and engine block on select GM vehicles including the Express, Savana, Sierra, and Silverado mo ...
MSRP $74.85
$48.60
MSRP $74.85
$48.60
2
Cylinder Head Gasket (1.05 mm) GM
GM Description: The GM Genuine Cylinder Head Gasket (1.05 mm), MPN 12637788, is an authentic OEM replacement designed to seal the critical junction between your engine block and cylinder head. This factory-engineered gasket maintains proper compression and prevents coolan ...
MSRP $136.75
$86.37
MSRP $136.75
$86.37
2
Cylinder Head Gasket (.95 mm) GM
GM Description: The Genuine GM OEM Cylinder Head Gasket (MPN: 12637787) is a precision-engineered sealing component designed to prevent coolant and oil leakage between the engine block and cylinder head on select GM vehicles including the Express, Savana, Sierra, and Silv ...
MSRP $83.62
$54.28
MSRP $83.62
$54.28
2
Cylinder Head Gasket (.95 mm) GM
GM Description: The GM OEM Cylinder Head Gasket (MPN: 12637790) is a genuine .95 mm engine seal engineered to prevent coolant and oil leaks on select GM vehicles including Express, Savana, Sierra, and Silverado models. This authentic General Motors replacement part delive ...
MSRP $71.96
$46.72
MSRP $71.96
$46.72
3
Rocker Arm Lower Cover GM
GM Description: Genuine GM OEM Rocker Arm Lower Cover (MPN: 12640380) for Chevrolet Silverado, GMC Sierra, Chevrolet Express, and GMC Savana pickup trucks and vans equipped with 6.6L diesel engines. This right-side lower cover protects critical engine components and maint ...
MSRP $206.62
$128.97
MSRP $206.62
$128.97
3
Passenger Side Valve Rocker Arm Upper Cover GM
GM Description: The Passenger Side Valve Rocker Arm Upper Cover (MPN: 12642771) is a genuine GM OEM engine component engineered to protect and seal the rocker arm assembly on your vehicle's cylinder head. This authentic General Motors part is specifically designed for 201 ...
MSRP $145.93
$92.16
MSRP $145.93
$92.16
3
Driver Side Rocker Arm Cover GM
GM Description: The GM OEM Driver Side Rocker Arm Cover (MPN: 12638153) is a genuine upper engine component engineered to protect rocker arm assemblies on select GM trucks and vans. This authentic General Motors part delivers factory-quality performance and durability for ...
MSRP $141.40
$127.26
MSRP $141.40
$127.26
4
Engine Intake Valve GM
GM Description: The GM Genuine Engine Intake Valve (MPN: 12638805) is an authentic OEM replacement part engineered to restore proper air intake flow in your vehicle's engine. This original equipment manufacturer valve is specifically designed for select GM trucks and vans ...
MSRP $48.05
$31.20
MSRP $48.05
$31.20
4
Engine Exhaust Valve GM
GM Description: # Product Description
The Genuine GM OEM Engine Exhaust Valve (MPN: 97366946) is a critical engine component engineered to manage exhaust gas flow and maintain optimal engine performance across select GM vehicles including the Express, Savana, Sierra, and ...
MSRP $87.77
$55.43
MSRP $87.77
$55.43
6
Valve Spring Seat GM
GM Description: Genuine GM OEM Valve Spring Seat (MPN: 97188750) is an authentic lower valve spring seat component engineered for Sierra, Silverado, Express, and Savana models. This precision-manufactured GM part maintains proper valve spring tension and alignment within ...
MSRP $7.11
$4.83
MSRP $7.11
$4.83
7
Engine Valve Spring GM
GM Description: # Product Description
This genuine GM OEM engine valve spring (MPN: 98025825) is engineered to maintain precise valve timing and engine performance across multiple General Motors truck and van models. Designed for Express, Savana, Sierra, and Silverado ve ...
MSRP $30.61
$20.81
MSRP $30.61
$20.81
8
Engine Exhaust Valve Seat GM
GM Description: Upgrade your Silverado or Sierra's exhaust system with the genuine GM OEM Engine Exhaust Valve Seat (MPN: 97212572), engineered to meet General Motors' exacting standards for optimal engine performance and longevity. This authentic factory part ensures pro ...
MSRP $7.62
$5.17
MSRP $7.62
$5.17
8
Engine Intake Valve Seat GM
GM Description: The GM OEM Engine Intake Valve Seat (MPN: 97212571) is a precision-engineered component designed to seal and support intake valves in your engine's cylinder head. This genuine General Motors part ensures optimal combustion chamber sealing and reliable valv ...
MSRP $9.72
$6.60
MSRP $9.72
$6.60
9
Valve Stem Key GM
GM Description: The GM Genuine Valve Stem Key (MPN: 94239501) is an essential engine component engineered to precision OEM specifications for reliable valve operation across multiple GM vehicle lines. This authentic General Motors part delivers exact factory fitment for E ...
MSRP $2.68
$1.82
MSRP $2.68
$1.82
10
Engine Rocker Arm GM
GM Description: The Engine Rocker Arm (MPN: 97365293) is a genuine GM OEM component engineered to deliver reliable valve actuation in your vehicle's intake system. This authentic General Motors part is precision-manufactured for Chevrolet Express, GMC Savana, GMC Sierra, ...
MSRP $162.59
$102.69
MSRP $162.59
$102.69
10
Engine Rocker Arm GM
GM Description: The GM OEM Engine Rocker Arm (MPN: 98004537) is a genuine General Motors component engineered for precise valve operation in select GM vehicles including Express, Savana, Sierra, and Silverado models. This critical engine part controls exhaust valve timing ...
MSRP $174.02
$109.90
MSRP $174.02
$109.90
11
Rocker Arm Shaft GM
GM Description: The GM OEM Rocker Arm Shaft (MPN: 97224903) is a genuine factory replacement part engineered to restore proper valve train operation in your vehicle. This authentic General Motors component is designed for Express, Savana, Sierra, and Silverado models, ens ...
MSRP $337.43
$210.61
MSRP $337.43
$210.61
12
Valve Push Rod GM
GM Description: The Genuine GM OEM Valve Push Rod (MPN: 97240416) is a critical engine component that transfers motion from the camshaft to the rocker arms, ensuring proper valve operation in your vehicle. This authentic General Motors part is engineered to original speci ...
MSRP $16.33
$11.10
MSRP $16.33
$11.10
13
Engine Hydraulic Valve Adjuster/Valve Lifter GM
GM Description: The GM Engine Hydraulic Valve Adjuster/Valve Lifter (MPN: 97325546) is a genuine OEM component engineered to maintain precise valve clearance and optimize engine performance across multiple GM truck and van models including Express, Savana, Sierra, and Sil ...
MSRP $70.30
$45.64
MSRP $70.30
$45.64
13
14
Engine Camshaft GM
GM Description: # Product Description
Upgrade your engine performance with the Genuine GM OEM Engine Camshaft (MPN: 12638804), engineered to precise specifications for optimal valve timing and engine efficiency. This authentic General Motors replacement part is designed ...
MSRP $396.63
$247.56
MSRP $396.63
$247.56
15
Engine Camshaft Bearing GM
GM Description: The GM OEM Engine Camshaft Bearing (MPN: 97239518) is a critical engine component designed for precise valve timing and optimal engine performance in General Motors vehicles. This genuine GM camshaft bearing ensures proper lubrication and support for your ...
MSRP $77.54
$50.34
MSRP $77.54
$50.34
15
Engine Camshaft Bearing GM
GM Description: #
OEM Genuine GM Engine Camshaft Bearing (MPN: 97239516) engineered for critical valve train support in select GM trucks and vans including Chevrolet Express, Savana, Sierra, and Silverado models. This factory original bearing manages camshaft rotation a ...
MSRP $86.48
$56.14
MSRP $86.48
$56.14
16
Crankshaft Front Oil Seal GM
GM Description: # Product Description
Upgrade your diesel engine's reliability with the Genuine GM OEM Crankshaft Front Oil Seal (MPN: 97209341), engineered specifically for 2015-2019 Chevrolet Silverado and GMC Sierra HD trucks with 6.6L Duramax diesel engines, as well ...
MSRP $71.22
$46.23
MSRP $71.22
$46.23
17
Front Engine Cover GM
GM Description: Replace your worn engine cover with the genuine GM OEM Front Engine Cover (MPN: 12624280), engineered to factory specifications for Chevrolet Silverado, GMC Sierra, Chevrolet Express, and GMC Savana models with 6.6L engines from 2015-2016. This authentic G ...
MSRP $828.03
$514.46
MSRP $828.03
$514.46
18
Engine Timing Camshaft Gear GM
GM Description: The GM OEM Engine Timing Camshaft Gear (MPN: 97377545) is a genuine primary camshaft gear engineered to precise General Motors specifications for reliable valve timing control. This authentic GM part is compatible with Express, Savana, Sierra, and Silverad ...
MSRP $308.02
$192.25
MSRP $308.02
$192.25
19
Engine Oil Pump Drive Gear GM
GM Description: Replace your worn engine oil pump drive gear with this Genuine GM OEM part (MPN: 97226137), engineered to meet General Motors' strict quality standards. This critical drivetrain component is designed to transmit power to your oil pump, ensuring proper engi ...
MSRP $100.70
$63.60
MSRP $100.70
$63.60
20
Engine Piston Ring Kit GM
GM Notes: Includes: One Standard Ring Set For One Piston.
Description: GM Genuine OEM Engine Piston Ring Kit (MPN: 97386951) is engineered to restore compression and oil control in your engine with precision-fit rings designed for select GM vehicles including Express, Savana, Sierra, and Silverado models. This standard-size p ...
MSRP $272.44
$170.04
MSRP $272.44
$170.04
21
Engine Piston GM
GM Notes: Includes: One Standard Piston W/Pin.
Description: The Genuine GM OEM Engine Piston (MPN: 19433164) is a precision-engineered replacement component designed to restore engine performance in select Chevrolet and GMC models including the Express, Savana, Silverado, and Sierra. This original equipment manufac ...
MSRP $175.20
$110.63
MSRP $175.20
$110.63
22
Engine Connecting Rod GM
GM Description: The GM OEM Engine Connecting Rod (MPN: 12636253) is a genuine factory replacement component engineered to transfer combustion force from the piston to the crankshaft with precision performance. This authentic General Motors part comes complete with the pis ...
MSRP $149.35
$94.31
MSRP $149.35
$94.31
23
Engine Connecting Rod Bearing GM
GM Notes: Includes: One Standard Upper & Lower Bearing For One Rod. Order By Color.
Description: # Product Description
This Genuine GM OEM Engine Connecting Rod Bearing (MPN: 97250338) is engineered to deliver reliable performance in your vehicle's engine assembly. Built to original manufacturer specifications, this yellow-colored bearing maintains p ...
MSRP $25.68
$17.45
MSRP $25.68
$17.45
24
Engine Crankshaft Main Bearing GM
GM Notes: Includes: One Standard Upper & Lower Bearing. Order By Color.
Description: Upgrade your engine's performance with the Genuine GM OEM Engine Crankshaft Main Bearing (MPN: 19256552), a precision-engineered bearing kit designed to ensure smooth crankshaft rotation and optimal engine reliability. This original equipment manufacturer ...
MSRP $22.03
$14.97
MSRP $22.03
$14.97
24
Crankshaft Bearing GM
GM Notes: Includes: One Standard Upper & Lower Bearing. Order By Color.
Description: Genuine GM OEM Crankshaft Bearing Set (MPN: 19256403) designed for Chevrolet Silverado, GMC Sierra, Chevrolet Express, and GMC Savana trucks and vans. This thrust bearing assembly supports critical engine operation by maintaining proper crankshaft alignmen ...
MSRP $95.91
$60.56
MSRP $95.91
$60.56
24
Engine Crankshaft Bearing Set GM
GM Notes: Includes: One Standard Upper & Lower Bearing. Order By Color.
Description: The GM OEM Engine Crankshaft Bearing Set (MPN: 19256553) is a precision-engineered bearing kit designed to maintain proper crankshaft alignment and engine performance in select GM vehicles including Silverado, Sierra, Express, and Savana models. This genui ...
MSRP $12.04
$8.19
MSRP $12.04
$8.19
24
Engine Crankshaft Bearing Set GM
GM Notes: Includes: One Standard Upper & Lower Bearing. Order By Color.
Description: This genuine GM OEM Engine Crankshaft Bearing Set (MPN: 19256554) is engineered to precise factory specifications for reliable engine performance in Chevrolet Silverado and GMC Sierra trucks. This complete bearing kit maintains proper crankshaft support an ...
MSRP $12.32
$8.37
MSRP $12.32
$8.37
25
Crankshaft GM
GM Description: Genuine GM OEM Crankshaft (MPN: 12680206) engineered to exact manufacturer specifications for reliable engine performance in Chevrolet Silverado and GMC Sierra pickup trucks, as well as Ford Express and Savana vans. This original equipment crankshaft conve ...
MSRP $4,129.80
$2,566.92
MSRP $4,129.80
$2,566.92
26
Rear Crankshaft Oil Seal GM
GM Description: Genuine GM OEM Rear Crankshaft Oil Seal (MPN: 97209342) engineered for Chevrolet Express, Savana, Silverado, and GMC Sierra 2500 HD/3500 HD models. This original equipment crankshaft seal prevents engine oil leaks by creating a tight, reliable barrier at b ...
MSRP $83.58
$54.26
MSRP $83.58
$54.26
27
Balancer GM
GM Description: The GM OEM Engine Harmonic Balancer (MPN: 19540389) is a genuine factory part designed for 6.6L diesel engines in select Silverado and Sierra trucks, as well as Express and Savana vans from 2015-2016 model years. This critical engine component reduces vibr ...
MSRP $519.09
$323.99
MSRP $519.09
$323.99
30
Engine Oil Pan GM
GM Description: The Genuine GM OEM Engine Oil Pan (MPN: 12669869) is engineered to safely contain and manage engine oil in your vehicle's lubrication system. This lower oil pan assembly is specifically designed for 2015-2016 Chevrolet Silverado and GMC Sierra trucks with ...
MSRP $167.15
$105.58
MSRP $167.15
$105.58
30
Upper Engine Oil Pan GM
GM Description: Genuine GM OEM Upper Engine Oil Pan (MPN: 12634972) for 2015-2016 Silverado, Sierra, Express, and Savana models equipped with 6.6L diesel engines. This authentic General Motors crankcase component maintains proper oil circulation and engine lubrication, en ...
MSRP $350.86
$218.99
MSRP $350.86
$218.99
31
Engine Oil Pump GM
GM Description: The GM OEM Engine Oil Pump (MPN: 12644591) is an essential engine component engineered to maintain proper oil circulation and lubrication throughout your vehicle's engine. This genuine General Motors part is specifically designed for Chevrolet Silverado, G ...
MSRP $271.86
$169.68
MSRP $271.86
$169.68
32
Oil Pump Screen GM
GM Description: The GM OEM Oil Pump Screen (MPN: 12639214) is a critical engine component that filters contaminants from engine oil before it reaches the pump, protecting your vehicle's lubrication system. This genuine General Motors part is engineered to meet factory spe ...
MSRP $89.74
$56.69
MSRP $89.74
$56.69
1 This price excludes a refundable manufacturer's core charge. Add the part to your cart to see the core charge.