2012 GMC SIERRA-1500 Engines & Components

Main Bearings, King SI-Series Main Bearings, Stock Size, Bi-Metal, Holden, Sold as a Set of 5

Part Number: KGB-MB5398SI

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Estimated Ship Date: Dec 29, 2025 if ordered today

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Piston, Rings, Flat Top, 4.065 in., 3.622 Stroke, Hypereutectic Aluminum, Chevy 6.2L, Set of 8

Part Number: MAH-2244035WR

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Estimated Ship Date: Nov 4, 2025 if ordered today

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Engine Piston Ring Set, Engine Piston Ring Set

Part Number: MAH-42154CP

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Estimated Ship Date: Nov 4, 2025 if ordered today

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Harmonic Balancer, Internal Balance, Nodular Iron, Buick, Cadillac, Chevy, GMC/Hummer/Isuzu, Small Block, Each

Part Number: ATP-102171

3.0 out of 5 stars ( 2 )

Estimated Ship Date: Oct 13, 2025 if ordered today

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TENSIONER

Part Number: NAL-12609719

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Estimated Ship Date: Jan 27, 2026 if ordered today

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Engine Oil Pump, Stock Replacement Oil P

Part Number: MEL-M295-395S

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Estimated Ship Date: Oct 28, 2025 if ordered today

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Piston With Rings, Hypereutectic, Flat Top, 4.8L, 5.3L, Set of 8

Part Number: MAH-2243887WR050

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Estimated Ship Date: Nov 4, 2025 if ordered today

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PISTON WITH RINGS GM 4.8/5.3L 10-14 (Reduced Compression)

Part Number: MAH-2243958WR

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Estimated Ship Date: Nov 3, 2025 if ordered today

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Pistons, Hypereutectic, Dish, 4.000 in. Bore, 1.5mm, 1.5mm, 3.0mm Ring Grooves, GM, Set of 6

Part Number: UEM-3451HC-STD

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Estimated Ship Date: Nov 7, 2025 if ordered today

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Pistons, Hypereutectic, Dish, 4.030 in. Bore, 1.5mm, 1.5mm, 3.0mm Ring Grooves, GM, Set of 6

Part Number: UEM-3451HC-030

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Estimated Ship Date: Nov 10, 2025 if ordered today

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Camshaft Phaser, Engine Variable Timing Sprocket, Steel, Cadillac, Chevy, GMC, Hummer, Each

Part Number: SMP-VVT590

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Estimated Ship Date: Today

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Belt, OE Technology Series, Multi-V Stretch, Serpentine, 4-Rib, 35.50 in. Length, Each

Part Number: CEL-4040355S

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Estimated Ship Date: Today

TUBE

Part Number: NAL-12609269

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Jan 26, 2026 if ordered today

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Oil Pump Driveshaft Locking Sleeves, Nylon, Buick, Chevrolet, Cadillac, GMC, Oldsmobile, Pontiac, Checker, Studebaker, V6/V8, Each

Part Number: FEL-72665

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

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CAMSHAFT ENGINE

Part Number: MEL-22326

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Estimated Ship Date: Oct 28, 2025 if ordered today

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OIL PAN

Part Number: RDR-3310639

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Estimated Ship Date: Oct 14, 2025 if ordered today

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Belt, OE Technology Series, Multi-V, Serpentine, 6-Rib, 87.80 in. Length, Each

Part Number: CEL-4060878F

4.0 out of 5 stars ( 1 )

Estimated Ship Date: Oct 20, 2025 if ordered today

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Timing Set, Single Roller Z Chain, Billet Steel Sprockets, Chevy, Center Distance Raised 0.390 in., 1-Bolt, Small Block LS2/LS3, 9 Key Way, Set

Part Number: CLO-9-3673TX9ZR

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Estimated Ship Date: Oct 16, 2025 if ordered today

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Main Bearings, SI-Series, Silicon Aluminum, 0.040 in. Crankshaft Undersize, Chevy, Set of 5

Part Number: KGB-MB5293SI040

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Estimated Ship Date: Dec 29, 2025 if ordered today

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Main Bearings, 1/2 Groove, .010 in. Crankshaft Undersize, Bi-metal, Silicon Aluminum, GM V6, Set of 5

Part Number: KGB-MB445SI010

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Estimated Ship Date: Today

Engine Piston Ring Set, Single Cyl Ring Set; Plasma Moly

Part Number: HSN-2M5170S030

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Estimated Ship Date: Today

CAMSHAFT ENGINE

Part Number: MEL-22206

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Estimated Ship Date: Oct 28, 2025 if ordered today

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Piston Rings, Premium Ductile Ring Sets, 0.030 in. Oversize, 4.030 in. Bore, Plasma-moly, 1.5mm, 1.5mm, 3.0mm Ring Thickness, H6, L6, V6, Set of 6

Part Number: HSN-2M4862030

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Oct 16, 2025 if ordered today

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Rocker Arm, Ultra Pro Magnum, Full Roller, 1.8 Ratio, Chromoly Steel, Black Oxide, Chevy, Rectangular Port LS, Each

Part Number: CCA-1678-1

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Estimated Ship Date: Nov 24, 2025 if ordered today

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CAMSHAFT

Part Number: MEL-MC1401

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Estimated Ship Date: Oct 28, 2025 if ordered today

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