2021 GMC SIERRA 1500 ACDelco Engines & Components

Lifters, GM Genuine Parts, Hydraulic Roller Style, Buick, Cadillac, Chevrolet, GMC, Hummer, Isuzu, Oldsmobile, Pontiac, Saab, Each

Part Number: ADO-12698945

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 4/20/2026 if shipped by air

Cylinder Head, Aluminum, Assembled, Intake Valve, Exhaust Valve, Chevrolet, Small Block, Gen V, Each

Part Number: ADO-12699617

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 4/20/2026 if shipped by air

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Camshaft Thrust Plates, GM Genuine Parts, Solid Type, Steel, Chevrolet, Each

Part Number: ADO-12589016

3.25 out of 5 stars ( 4 )

Estimated Ship Date: Monday 4/20/2026 if shipped by air

Harmonic Balancer Bolts, GM Genuine Parts, M16 x 2.0 Thread Size, Flanged Hex Head, Steel, 4.055 in. Underhead Length, Cadillac, Chevrolet, GMC, Each

Part Number: ADO-11547372

Not Yet Reviewed

Estimated Ship Date: Monday 4/20/2026 if shipped by air

Rocker Arms, GM Genuine Parts, Roller Fulcrum, Pedestal Mounting Style, 1.6 Ratio, Steel, Natural, Cadillac, Chevrolet, GMC, Each

Part Number: ADO-12619829

Not Yet Reviewed

Estimated Ship Date: Monday 4/20/2026 if shipped by air

Connecting Rods, GM Genuine Parts, I-beam Style, Steel, 6.098 in. Length Center To Center, Buick, Cadillac, Chevy, GMC, Hummer, Isuzu, Saab, Each

Part Number: ADO-12649190

Not Yet Reviewed

Estimated Ship Date: Monday 4/20/2026 if shipped by air

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ROD ASM-VLV PUSH

Part Number: ADO-12619828

Not Yet Reviewed

Estimated Ship Date: Monday 4/20/2026 if shipped by air

Tensioner, Timing Chain, Plastic, Cadillac, Chevrolet, GMC, Each

Part Number: ADO-12630107

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Monday 4/20/2026 if shipped by air

Camshaft Followers, GM Genuine Parts Valve Lifter Followers, Steel, Cadillac, Chevrolet, GMC, Each

Part Number: ADO-12642273

Not Yet Reviewed

Estimated Ship Date: Monday 4/20/2026 if shipped by air

Accessory Belts, Serpentine, 6-rib, 68.90 in. Length, Cadillac, Chevrolet, GMC, Each

Part Number: ADO-12669858

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Monday 4/20/2026 if shipped by air

Piston Oil Kits, Replacement, Billet Steel, Cadillac, Chevrolet, GMC, Each

Part Number: ADO-12678499

Not Yet Reviewed

Estimated Ship Date: Monday 4/20/2026 if shipped by air

Oil Filters, Ultraguard Gold Engine Oil Filters, Canister, Buick, Cadillac, Chevrolet, GMC, Each

Part Number: ADO-UPF66R

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 4/20/2026 if shipped by air

Valve Lifter Guide, Plastic, Hydraulic Roller, Front For AFM/DOD, Chevrolet, LS, Each

Part Number: ADO-12669184

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 4/20/2026 if shipped by air

Variable Cam Timing Solenoids, ACDelco GM Genuine Parts Engine Variable Valve Timing Solenoids, VVT Solenoid, Cadillac, Chevrolet, GMC, Each

Part Number: ADO-12731637

Not Yet Reviewed

Estimated Ship Date: Monday 4/20/2026 if shipped by air

Wiring Harnesses, ACDelco Wiring Harnesses, 2 Circuits, 9.65 in. Length, Cadillac, Chevy, GMC, Each

Part Number: ADO-12681015

Not Yet Reviewed

Estimated Ship Date: Monday 4/20/2026 if shipped by air

ROD ASM-CONN

Part Number: ADO-12714549

Not Yet Reviewed

Estimated Ship Date: Monday 4/20/2026 if shipped by air

Valve Lifter Guide, Plastic, Hydraulic Roller, Rear For AFM/DOD , Chevrolet, LS, Each

Part Number: ADO-12669185

Not Yet Reviewed

Estimated Ship Date: Monday 4/20/2026 if shipped by air

Valves, GM Genuine Parts Engine Valves, Exhaust, Steel, 2.890 in. Overall Length, Chevrolet, GMC, Each

Part Number: ADO-12678745

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 4/20/2026 if shipped by air

Connecting Rod Bolts, GM Genuine Parts Engine Connecting Rod Bolts, Steel, 9 mm. Diameter, Cadillac, Chevy, Each

Part Number: ADO-11548432

Not Yet Reviewed

Estimated Ship Date: Monday 4/20/2026 if shipped by air

Valves, GM Genuine Parts Engine Valves, Intake, Steel, 5.156 in. Overall Length, Chevrolet, GMC, Each

Part Number: ADO-12619825

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 4/20/2026 if shipped by air

Camshaft Bearings, OE Replacement, Standard Size, 2.328 in. O.D., 0.775 in. Width, Position 2 or 4, GM, LS, 3rd Design, Each

Part Number: ADO-19260875

1.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 4/20/2026 if shipped by air

Camshaft Bearings, OE Replacement, Standard Size, 2.308 in. O.D., 0.775 in. Width, Position 3, GM, LS, 3rd Design, Each

Part Number: ADO-19260876

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 4/20/2026 if shipped by air

Valves, GM Genuine Parts Engine Valves, Intake, Steel, 4.401 in. Overall Length, Cadillac, Chevrolet, GMC, Each

Part Number: ADO-12629513

Not Yet Reviewed

Estimated Ship Date: Monday 4/20/2026 if shipped by air

Engine Oil Filler Caps, GM Genuine Parts, Stock Top Style, Round, Plastic, Black, Chevrolet, GMC, Each

Part Number: ADO-FC279

Not Yet Reviewed

Estimated Ship Date: Monday 4/20/2026 if shipped by air

Valves, GM Genuine Parts Engine Valves, Exhaust, Steel, 2.910 in. Overall Length, Cadillac, Chevrolet, GMC, Each

Part Number: ADO-12678746

Not Yet Reviewed

Estimated Ship Date: Monday 4/20/2026 if shipped by air