2012 GMC SIERRA-1500 Engines & Components

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: Dec 8, 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: Jan 12, 2026 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: Dec 3, 2025 if ordered today

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TIMING COVER

Part Number: PIO-500323RSH

1.0 out of 5 stars ( 1 )

Estimated Ship Date: Dec 8, 2025 if ordered today

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Piston Rings, GM Genuine Parts Piston Rings, 4.00 in. Bore, 5/64 in. 5/64. 3/16 in. Thickness, Chevy, GMC, Sold as a Single Set

Part Number: ADO-12522848

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Estimated Ship Date: Today

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TENSIONER

Part Number: NAL-12609719

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Estimated Ship Date: Mar 18, 2026 if ordered today

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Rod Bearings, HP-Series, Silicon Aluminum, 0.010 in. Crankshaft Undersize, Large Journal, Chevy, Set of 8

Part Number: KGB-CR807HPND010

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Feb 16, 2026 if ordered today

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Engine Piston Ring Set, 6-Cyl Ring Set; Phosphate

Part Number: HSN-4862030

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Estimated Ship Date: Dec 5, 2025 if ordered today

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Piston Rings, Premium Ductile Ring Sets, 0.020 in. Oversize, 4.020 in. Bore, Plasma-moly, 1.5mm, 1.5mm, 3.0mm Ring Thickness, H6, L6, V6, Set of 6

Part Number: HSN-2M4862020

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Estimated Ship Date: Dec 8, 2025 if ordered today

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Rocker Arms, Fits 3/8 in. Stud, Full Roller, Steel, 1.8 Ratio, Chevy, V8, LS, Each

Part Number: CCA-1675-1

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Estimated Ship Date: Jan 12, 2026 if ordered today

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Rocker Arms, Ultra Pro Magnum, Full Roller, Chromoly Steel, Black Oxide, 1.8 Ratio, 3/8 in. Stud Mount, Rectangle Port Heads Only, Chevy, 6.2L, Each

Part Number: CCA-1676-1

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Estimated Ship Date: Jan 12, 2026 if ordered today

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Harmonic Balancer, Internal Balance, Nodular Iron, Chevy, GMC, Isuzu, Oldsmobile, V6, Each

Part Number: ATP-102156

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Estimated Ship Date: Dec 3, 2025 if ordered today

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Chevrolet V8, 294-325-346-365, 1997-07

Part Number: CLE-MS2199A20

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Estimated Ship Date: Jan 5, 2026 if ordered today

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Engine Piston Ring Set, 6-Cyl Ring Set; Phosphate

Part Number: HSN-4862060

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Estimated Ship Date: Dec 4, 2025 if ordered today

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LS VALVE COVER

Part Number: NAL-12642655

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Estimated Ship Date: Mar 17, 2026 if ordered today

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Single Piston

Part Number: MAH-S0116

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Estimated Ship Date: Dec 23, 2025 if ordered today

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Single Piston

Part Number: MAH-S0183

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Estimated Ship Date: Dec 23, 2025 if ordered today

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PISTON

Part Number: MAH-S1726

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Estimated Ship Date: Dec 23, 2025 if ordered today

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PISTON

Part Number: MAH-S1727

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Estimated Ship Date: Dec 23, 2025 if ordered today

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PISTON

Part Number: MAH-S1728

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Estimated Ship Date: Dec 23, 2025 if ordered today

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Crankshaft Main Bearings

Part Number: KGB-MB5398SI010

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Estimated Ship Date: Feb 13, 2026 if ordered today

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Crankshaft Main Bearings

Part Number: KGB-MB5398SI030

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Estimated Ship Date: Feb 13, 2026 if ordered today

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Rod Bearings, HP-Series, Silicon Aluminum, 0.021 in. Crankshaft Undersize, Large Journal, Chevy, Set of 8

Part Number: KGB-CR807HPND021

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Estimated Ship Date: Feb 13, 2026 if ordered today

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ENGINE TIMING GEAR SET

Part Number: CLO-2555S

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Estimated Ship Date: Dec 4, 2025 if ordered today

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Engine Piston Ring Set, 6-Cyl Ring Set; Phosphate

Part Number: HSN-4862020

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Estimated Ship Date: Dec 5, 2025 if ordered today

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