Engine for 2021 GMC Sierra 1500
No.
Part # / Description / Price
Price
N/A
RTV Silicone Sealant - 300 mL 2 
GM
GM Description: Genuine GM OEM RTV Silicone Sealant (MPN: 19369831) is a premium one-part, room-temperature vulcanizing liquid gasket engineered for high-performance sealing applications across GM trucks and specialty vehicles. This 300 mL tube of RTV silicone delivers re ...
Not For Sale
Not For Sale
N/A
Engine Oil Cooler Coolant Inlet Hose GM
GM Description: The Engine Oil Cooler Coolant Inlet Hose (MPN: 55496831) is a genuine GM OEM component engineered to regulate engine temperature in select diesel-powered GM trucks. This upper inlet hose connects the engine to the t-connector assembly and is specifically d ...
MSRP $15.02
$10.20
MSRP $15.02
$10.20
N/A
Engine Oil Cooler Coolant Inlet Hose GM
GM Description: The Engine Oil Cooler Coolant Inlet Hose (MPN: 55496832) is a genuine GM OEM component engineered to manage coolant flow in the oil cooling system of diesel-powered trucks. This authentic General Motors part is specifically designed for Chevrolet Silverado ...
MSRP $13.99
$9.50
MSRP $13.99
$9.50
N/A
Valve GM
GM Description: Genuine GM OEM Valve (MPN: 40009556) engineered for premium performance in Chevrolet Silverado, GMC Sierra, Chevrolet Suburban, Tahoe, Cadillac Escalade ESV, and GMC Yukon XL models equipped with 3.0L diesel engines. This authentic General Motors replaceme ...
MSRP $49.29
$32.01
MSRP $49.29
$32.01
N/A
Engine Oil Cooler Kit with Gasket GM
GM Description: The GM OEM Engine Oil Cooler Kit (MPN: 55509959) is a genuine General Motors replacement part engineered to maintain optimal engine oil temperatures in diesel-powered trucks. This complete cooler assembly with gasket is specifically designed for Chevrolet ...
MSRP $99.03
$65.84
MSRP $99.03
$65.84
N/A
By-Pass Hose GM
GM Description: Genuine GM OEM By-Pass Hose (MPN: 55514219) is engineered to regulate coolant flow in the engine cooling system for select 2020-2022 GM diesel trucks and SUVs. This outlet hose is specifically designed for vehicles equipped with the 3.0L Duramax LM2 diesel ...
MSRP $109.50
$60.66
MSRP $109.50
$60.66
N/A
Front Mount GM
GM Description: The GM OEM Front Mount (MPN: 85623481) is a genuine General Motors component designed for 4WD Silverado and Sierra trucks equipped with the 3.0L diesel engine. This left-side front mount provides essential structural support and alignment for your truck's ...
MSRP $154.97
$97.90
MSRP $154.97
$97.90
N/A
Engine 1 GM
GM Notes: Does Not Include: Exhaust Manifolds or Engine Electrical.
Description: # Product Description
Genuine GM OEM Engine (MPN: 40009412) designed for high-performance full-size SUVs including Escalade ESV, Suburban, Tahoe, and Yukon XL models. This authentic General Motors engine assembly delivers reliable power and durability for ...
MSRP $5,887.47
$5,775.62
MSRP $5,887.47
$5,775.62
N/A
Front Mount GM
GM Description: GM OEM Front Mount (MPN: 85623482) is engineered for premium performance on select Silverado and Sierra 4WD models equipped with the 3.0L Duramax diesel engine. This genuine General Motors component delivers reliable engine mounting support and vibration i ...
MSRP $154.97
$97.90
MSRP $154.97
$97.90
1
Cylinder Head GM
GM Notes: Includes: Valves & Valvetrain.
Description: The Genuine GM OEM Cylinder Head (MPN: 40009167) is a critical engine component designed to seal the combustion chamber and house valve mechanisms for reliable performance. This original equipment manufacturer part is engineered for Chevrolet Silverado, GM ...
MSRP $959.10
$595.88
MSRP $959.10
$595.88
2
Head Gasket GM
GM Description: Genuine GM OEM Head Gasket MPN 40009081 is engineered to seal your engine's cylinder head to the engine block, preventing coolant and oil leakage. This authentic General Motors replacement part is designed for Chevrolet Silverado, GMC Sierra, Cadillac Esca ...
MSRP $115.81
$73.15
MSRP $115.81
$73.15
2
Head Gasket GM
GM Description: Genuine GM OEM Head Gasket MPN 40009079 is engineered to seal the cylinder head to the engine block on select GM trucks and SUVs including Silverado, Sierra, Escalade, Suburban, Tahoe, and Yukon models. This critical engine gasket features a 1.30mm thickne ...
MSRP $120.33
$75.99
MSRP $120.33
$75.99
2
Head Gasket GM
GM Description: # Head Gasket - GM OEM Part 40009080
Genuine GM OEM Head Gasket (MPN: 40009080) is engineered to seal the cylinder head to the engine block on select full-size GM trucks and SUVs. This 1.40mm thick gasket is designed for premium engine performance and rel ...
MSRP $60.29
$39.15
MSRP $60.29
$39.15
3
Valve Cover GM
GM Description: Genuine GM OEM Valve Cover (MPN: 40009155) engineered for 3.0L diesel engines in full-size GM trucks and SUVs including Silverado, Sierra, Escalade ESV, Suburban, Tahoe, and Yukon XL models. This factory valve cover seals and protects critical engine compo ...
MSRP $312.54
$195.11
MSRP $312.54
$195.11
4
Valve Cover Gasket GM
GM Description: Genuine GM OEM Valve Cover Gasket (MPN: 55502647) engineered for 3.0L diesel engines in full-size GM trucks and SUVs including Silverado, Sierra, Suburban, Tahoe, Escalade ESV, and Yukon XL models. This OEM valve cover gasket prevents oil leaks and maintai ...
MSRP $61.66
$40.04
MSRP $61.66
$40.04
5
Intake Valve GM
GM Description: GM Genuine OEM Intake Valve (MPN: 55490237) is engineered for optimal engine performance in Chevrolet Silverado and GMC Sierra trucks. This factory-original part controls air intake timing and ensures precise fuel-air mixture combustion in your vehicle's e ...
MSRP $6.73
$4.57
MSRP $6.73
$4.57
6
Exhaust Valve GM
GM Description: # Genuine GM OEM Exhaust Valve (MPN: 55490236)
The GM Genuine OEM Exhaust Valve (MPN: 55490236) is engineered to deliver reliable engine performance in Silverado and Sierra models. This critical valve component manages exhaust gas flow during engine combu ...
MSRP $10.76
$7.32
MSRP $10.76
$7.32
7
Valve Seals GM
GM Description: Genuine GM OEM Valve Seals (MPN: 55484799) are precision engine components designed to prevent oil leakage and maintain proper combustion chamber sealing in your vehicle's cylinder head. These factory-original seals are engineered for Chevrolet Silverado, ...
MSRP $4.43
$2.99
MSRP $4.43
$2.99
8
Engine Valve Spring GM
GM Notes: Serviced With Cylinder Head.
Description: The Genuine GM OEM Engine Valve Spring (MPN: 24000389) is a critical engine component engineered to maintain proper valve timing and operation in Chevrolet Silverado, Sierra, Suburban, and GMC Yukon XL models. This authentic General Motors replacement part ...
MSRP $8.31
$5.64
MSRP $8.31
$5.64
9
Valve Spring Retainer GM
GM Description: The Valve Spring Retainer (MPN: 55484797) is a genuine GM OEM component engineered for precision engine performance in Silverado and Sierra trucks. This critical valve train part maintains proper spring tension and valve alignment, ensuring optimal engine ...
MSRP $4.08
$2.77
MSRP $4.08
$2.77
10
Valve Keeper (SOLD INDIVIDUALLY) GM
GM Description: # Valve Keeper (SOLD INDIVIDUALLY)
The GM OEM Valve Keeper (MPN: 90529533) is an essential engine component designed to secure valve springs in place on the valve stem, preventing valve float and maintaining proper engine performance across select GM vehi ...
MSRP $8.32
$5.65
MSRP $8.32
$5.65
11
Turbocharger 1 GM
GM Description: Upgrade your diesel engine's performance with the Genuine GM OEM Turbocharger (MPN: 40009289), engineered to deliver superior boost and efficiency for select GM vehicles equipped with 3.0L diesel engines. This authentic General Motors turbocharger is desig ...
MSRP $1,330.08
$826.37
MSRP $1,330.08
$826.37
12
Valve Lifter GM
GM Description: 🔧 GM Part #26473210 — what it is
GM Genuine Parts 26473210 Front Brake Pad Wear Sensor
Official name: Front Disc Brake Pad Wear Sensor
Type: OEM GM / ACDelco sensor
Position: Front brakes (usually 1 per side → often need 2 total)
⚙️ ...
MSRP $5.74
$3.90
MSRP $5.74
$3.90
13
Engine Camshaft GM
GM Description: The GM OEM Engine Camshaft (MPN: 55508605) is a genuine factory replacement part engineered to restore proper valve timing and engine performance in Chevrolet Silverado and GMC Sierra trucks. This authentic General Motors component controls the opening and ...
MSRP $139.04
$87.83
MSRP $139.04
$87.83
13
Engine Camshaft GM
GM Description: # Product Description
The GM OEM Engine Camshaft (MPN: 55508606) is a genuine intake camshaft engineered to precise factory specifications for Chevrolet Silverado and GMC Sierra pickup trucks. This critical engine component controls valve timing and lift ...
MSRP $148.75
$93.97
MSRP $148.75
$93.97
14
Front Crankshaft Engine Oil Seal GM
GM Notes: Includes: Front Crankshaft Seal.
Description: GM part number 55509254 is a genuine GM front crankshaft oil seal assembly (also called “Seal Assembly, Cr/Shf Frt Oil” or “Front Crankshaft Engine Oil Seal”). It supersedes GM part 55493233.
Common details:
Used on GM 3.0L Duramax diesel engine ...
MSRP $14.16
$9.62
MSRP $14.16
$9.62
15
Secondary Timing Chain GM
GM Description: The GM OEM Secondary Timing Chain (MPN: 55515943) is a critical engine component designed to synchronize crankshaft and camshaft rotation in diesel injection pump systems, ensuring precise valve timing during intake and exhaust strokes. This genuine Genera ...
MSRP $48.50
$31.49
MSRP $48.50
$31.49
15
Timing Chain GM
GM Description: Genuine GM OEM Timing Chain (MPN: 55489211) precisely synchronizes crankshaft and camshaft rotation to ensure proper valve timing during engine operation. This critical engine component maintains optimal intake and exhaust stroke performance for Chevrolet ...
MSRP $24.51
$16.65
MSRP $24.51
$16.65
16
Timing Belt GM
GM Description: Genuine GM OEM Timing Belt (MPN: 55493234) is engineered to deliver reliable engine performance on Chevrolet Silverado and GMC Sierra trucks. This original equipment manufacturer part controls precise valve timing and oil pump operation, ensuring optimal e ...
MSRP $35.93
$23.33
MSRP $35.93
$23.33
17
Engine Timing Camshaft Sprocket GM
GM Description: The GM OEM Engine Timing Camshaft Sprocket (MPN: 55489218) is a critical engine component engineered to precisely control camshaft timing and valve operation in Chevrolet Silverado and GMC Sierra trucks. This genuine General Motors part delivers reliable p ...
MSRP $9.81
$6.66
MSRP $9.81
$6.66
18
Timing Chain Tensioner GM
GM Description: Genuine GM OEM Timing Chain Tensioner (MPN: 55508005) for Chevrolet Silverado and GMC Sierra models equipped with diesel injection pump systems. This OEM replacement part maintains precise engine timing by applying consistent hydraulic pressure to the timi ...
MSRP $23.72
$16.12
MSRP $23.72
$16.12
18
Timing Chain Tensioner GM
GM Description: The GM OEM Timing Chain Tensioner (MPN: 55489220) is a genuine General Motors engine component engineered to maintain optimal camshaft chain tension in select GM vehicles including Silverado and Sierra models. This authentic factory part ensures precise va ...
MSRP $27.74
$18.85
MSRP $27.74
$18.85
19
Engine Timing Chain Guide GM
GM Description: Genuine GM OEM Engine Timing Chain Guide (MPN: 55489216) for Silverado and Sierra models keeps your injection pump chain properly tensioned and aligned. This slack side timing chain guide is engineered to GM's exacting specifications and ensures optimal en ...
MSRP $5.85
$3.97
MSRP $5.85
$3.97
19
Timing Chain Guide GM
GM Description: The GM OEM Timing Chain Guide (MPN: 55489219) is a genuine camshaft chain component engineered to maintain proper slack side tension in your engine's timing system. This authentic General Motors part is designed for select Silverado and Sierra models, ensu ...
MSRP $15.95
$10.84
MSRP $15.95
$10.84
19
Engine Timing Chain Guide GM
GM Description: Genuine GM OEM Engine Timing Chain Guide (MPN: 55489213) maintains proper tension on the injection pump chain for optimal engine performance in Chevrolet Silverado and GMC Sierra trucks. This tension-side chain guide is engineered to GM's exacting specific ...
MSRP $7.20
$4.89
MSRP $7.20
$4.89
19
Timing Chain Guide GM
GM Description: The GM OEM Timing Chain Guide (MPN: 55489221) is a genuine camshaft chain component engineered to maintain proper tension and alignment on the tension side of your engine's timing chain system. This authentic General Motors part is specifically designed fo ...
MSRP $8.41
$5.72
MSRP $8.41
$5.72
20
Piston Ring Kit with Compression Rings and Oil Ring Rail GM
GM Notes: Includes: Standard Rings For One Piston.
Description: # Genuine GM OEM Piston Ring Kit (MPN: 55500618)
The GM Genuine Piston Ring Kit (MPN: 55500618) includes precision-engineered compression rings and oil ring rails designed for optimal engine performance and durability. This OEM replacement part is specifi ...
MSRP $61.70
$40.06
MSRP $61.70
$40.06
21
Piston GM
GM Notes: Includes: One Standard Piston W/Pin & Piston Rings.
Description: GM Genuine OEM Piston MPN 55510938 is engineered for Chevrolet Silverado and GMC Sierra engines, delivering precision-fit performance in critical combustion chamber applications. This authentic General Motors piston is manufactured to exacting specificatio ...
MSRP $105.22
$66.47
MSRP $105.22
$66.47
22
Connecting Rod GM
GM Description: # SEO-Optimized Product Description
The GM OEM Connecting Rod (MPN: 24000372) is a critical engine component that links the piston to the crankshaft, enabling smooth power transfer and engine performance in your vehicle. This genuine General Motors part i ...
MSRP $73.32
$47.60
MSRP $73.32
$47.60
23
Connecting Rod Lower Bearing GM
GM Description: Genuine GM OEM Connecting Rod Lower Bearing (MPN: 55490523) is a critical engine component engineered to maintain proper crankshaft and connecting rod alignment in your vehicle. This authentic General Motors part is designed to withstand extreme engine pre ...
MSRP $7.20
$4.89
MSRP $7.20
$4.89
23
F (S)Bearing GM
GM Description: # 1. Product Description Paragraph
The GM OEM F (S)Bearing (MPN: 40009490) is a genuine upper suspension component engineered for heavy-duty performance in full-size GM trucks and SUVs. This critical bearing assembly supports the steering and suspension s ...
MSRP $12.58
$8.53
MSRP $12.58
$8.53
24
Crankshaft GM
GM Description: Genuine GM OEM Crankshaft (MPN: 40009035) is the original equipment manufacturer replacement part designed for Chevrolet Silverado, GMC Sierra, Chevrolet Suburban, Chevrolet Tahoe, Cadillac Escalade ESV, and GMC Yukon XL models. This critical engine compon ...
MSRP $804.37
$499.86
MSRP $804.37
$499.86
25
Crankshaft Lower Bearing GM
GM Notes: Includes: Upper Is One Half Shell, Lower is a Complete Set Of 7 Half Shells.
Description: # Product Description
The GM OEM Crankshaft Lower Bearing (MPN: 55490473) is a genuine main bearing engineered for select Silverado and Sierra trucks, delivering reliable engine support and optimal performance. This critical engine component maintains pro ...
MSRP $5.46
$3.71
MSRP $5.46
$3.71
25
Crankshaft Upper Bearing GM
GM Notes: Includes: Upper Is One Half Shell, Lower is a Complete Set Of 7 Half Shells.
Description: Upgrade your Silverado or Sierra with the genuine GM OEM crankshaft upper bearing (MPN: 55492646), engineered to meet strict manufacturer specifications for reliable engine performance. This journal bearing is precision-manufactured for Journal 1 or 7 posi ...
MSRP $6.18
$4.20
MSRP $6.18
$4.20
25
Crankshaft Lower Bearing GM
GM Notes: Includes: Upper Is One Half Shell, Lower is a Complete Set Of 7 Half Shells.
Description: The Genuine GM OEM Crankshaft Lower Bearing (MPN: 55490472) is a critical engine component engineered to support and reduce friction on your vehicle's crankshaft. This original equipment manufacturer part is specifically designed for GM Silverado and Sierr ...
MSRP $5.26
$3.58
MSRP $5.26
$3.58
25
Crankshaft Upper Bearing GM
GM Notes: Includes: Upper Is One Half Shell, Lower is a Complete Set Of 7 Half Shells.
Description: Upgrade your engine's performance with the Genuine GM OEM Crankshaft Upper Bearing (MPN: 55490519), engineered to deliver reliable crankshaft support in Silverado and Sierra models. This upper main bearing is precision-manufactured to exacting GM standards ...
MSRP $5.68
$3.86
MSRP $5.68
$3.86
25
Crankshaft Upper Bearing GM
GM Notes: Includes: Upper Is One Half Shell, Lower is a Complete Set Of 7 Half Shells.
Description: The GM Genuine Crankshaft Upper Bearing (MPN: 55490520) is an essential engine component engineered to support and stabilize the crankshaft during operation across select GM vehicles. This OEM bearing maintains precise tolerances and reduces friction betwe ...
MSRP $5.54
$3.77
MSRP $5.54
$3.77
25
Crankshaft Upper Bearing GM
GM Notes: Includes: Upper Is One Half Shell, Lower is a Complete Set Of 7 Half Shells.
Description: The GM Crankshaft Upper Bearing (MPN: 55490521) is a genuine OEM engine component engineered to precise manufacturer specifications for reliable crankshaft support and smooth engine operation. This authentic General Motors part ensures proper bearing clear ...
MSRP $5.46
$3.71
MSRP $5.46
$3.71
25
Crankshaft Upper Bearing GM
GM Notes: Includes: Upper Is One Half Shell, Lower is a Complete Set Of 7 Half Shells.
Description: Genuine GM OEM Crankshaft Upper Bearing (MPN: 55492647) for Silverado and Sierra trucks, engineered to precise GM specifications for reliable engine performance. This upper main bearing is designed for Journal 1 or 7 applications with exacting 2.479-2.485 ...
MSRP $5.86
$3.98
MSRP $5.86
$3.98
25
Crankshaft Upper Bearing GM
GM Notes: Includes: Upper Is One Half Shell, Lower is a Complete Set Of 7 Half Shells.
Description: Upgrade your engine's reliability with the Genuine GM OEM Crankshaft Upper Bearing (MPN: 55492648), engineered to deliver superior performance in Chevrolet Silverado and GMC Sierra trucks. This critical main bearing component supports Journal 1 or 7 with p ...
MSRP $5.10
$3.46
MSRP $5.10
$3.46
25
Crankshaft Upper Bearing GM
GM Notes: Includes: Upper Is One Half Shell, Lower is a Complete Set Of 7 Half Shells.
Description: # Product Description
Upgrade your engine's performance with this Genuine GM OEM Crankshaft Upper Bearing (MPN: 55495258), engineered to meet General Motors' strict quality standards. This critical engine component supports the crankshaft and reduces fric ...
MSRP $5.54
$3.77
MSRP $5.54
$3.77
25
Crankshaft Upper Bearing GM
GM Notes: Includes: Upper Is One Half Shell, Lower is a Complete Set Of 7 Half Shells.
Description: The Genuine GM OEM Crankshaft Upper Bearing (MPN: 55495259) is a critical engine component engineered to support and reduce friction on the crankshaft's main journal in select GM vehicles including Silverado and Sierra models. This precision-manufactured b ...
MSRP $5.26
$3.58
MSRP $5.26
$3.58
25
Crankshaft Upper Bearing GM
GM Notes: Includes: Upper Is One Half Shell, Lower is a Complete Set Of 7 Half Shells.
Description: # Product Description
The GM Genuine OEM Crankshaft Upper Bearing (MPN: 55495260) is a critical engine component engineered to deliver reliable performance in select GM vehicles. This authentic crankshaft bearing is precision-manufactured to exact OEM spe ...
MSRP $5.68
$3.86
MSRP $5.68
$3.86
25
Crankshaft Lower Bearing GM
GM Notes: Includes: Upper Is One Half Shell, Lower is a Complete Set Of 7 Half Shells.
Description: The Genuine GM OEM Crankshaft Lower Bearing (MPN: 55490471) is a precision engine component engineered to support and reduce friction on your vehicle's crankshaft. This main bearing is specifically designed for Chevrolet Silverado and GMC Sierra applicatio ...
MSRP $5.54
$3.77
MSRP $5.54
$3.77
26
Crankshaft Thrust Bearing GM
GM Description: GM Genuine OEM Crankshaft Thrust Bearing (MPN: 55490482) is a critical engine component engineered to manage crankshaft endplay and maintain proper shaft alignment in your vehicle's engine block. This factory-original thrust bearing is specifically designe ...
MSRP $4.65
$3.15
MSRP $4.65
$3.15
27
Rear Main Seal GM
GM Description: The Genuine GM OEM Rear Main Seal (MPN: 40009072) is engineered to prevent oil leakage from the engine block on select GM full-size trucks and SUVs. This critical engine seal maintains proper lubrication and prevents costly oil loss in vehicles like the Si ...
MSRP $19.52
$13.27
MSRP $19.52
$13.27
28
Rear Main Seal Retainer GM
GM Description: The GM OEM Rear Main Seal Retainer (MPN: 40009454) is an essential engine component designed to prevent oil leaks at the crankshaft. This genuine General Motors part fits Chevrolet Silverado, GMC Sierra, Chevrolet Suburban, Tahoe, Cadillac Escalade ESV, an ...
MSRP $113.36
$71.60
MSRP $113.36
$71.60
29
Crankshaft Pulley GM
GM Description: Genuine GM OEM Crankshaft Pulley (MPN: 55512109) engineered for Chevrolet Silverado and GMC Sierra trucks equipped with 3.0L diesel engines. This factory original crankshaft pulley maintains proper engine accessory drive system operation, delivering reliab ...
MSRP $148.64
$93.90
MSRP $148.64
$93.90
30
Lower Oil Pan GM
GM Description: The GM OEM Lower Oil Pan (MPN: 55506665) is a genuine replacement component engineered for Chevrolet Silverado and GMC Sierra trucks equipped with 3.0L diesel engines. This factory-original pan provides reliable oil containment and drainage, ensuring prope ...
MSRP $87.32
$56.71
MSRP $87.32
$56.71
30
Extension GM
GM Description: Silverado, sierra. Upper. Suburban. Tahoe. Escalade. Yukon.
MSRP $447.94
$279.64
MSRP $447.94
$279.64
31
Oil Pump GM
GM Description: Upgrade your diesel engine with the Genuine GM OEM Oil Pump (MPN: 40009011), engineered to deliver reliable oil circulation and engine protection for Chevrolet Silverado, Sierra, Suburban, Tahoe, and GMC Yukon XL models equipped with the 3.0L Duramax diese ...
MSRP $192.77
$120.34
MSRP $192.77
$120.34
32
Oil Pump Suction Pipe GM
GM Description: The GM OEM Oil Pump Suction Pipe (MPN: 55511445) is an essential engine component engineered to deliver precise fuel delivery and optimal oil circulation performance in your Silverado or Sierra equipped with a 3.0L diesel engine. This genuine General Motor ...
MSRP $11.24
$7.64
MSRP $11.24
$7.64
1 This price excludes a refundable manufacturer's core charge. Add the part to your cart to see the core charge.
2 This part contains hazardous materials. Extra shipping costs apply.