GMC SIERRA 2500 HD CLASSIC Engines & Components

Innovators West Power Steering Pulleys 979

Innovators West Power Steering Pulleys 979

Power Steering Pulley, Serpentine, 8-Groove, Press Fit, 6.260 in. Outside Diameter, Billet Aluminum, Natural, Chevy, GMC, Truck, LS, Each

Part Number: INW-979

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Sealed Power A-Series Rod Bearings 2555A 2

Rod Bearing, 0.002 in. Crankshaft Undersize, Bi Metal, AM General, Avanti, Buick, Chevy, GMC, Hummer, Oldsmobile, L6, V8

Part Number: SLP-2555A2

5.0 out of 5 stars ( 1 )

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Pacific Performance Engineering Oil Pan Drain Plugs 114052001

Oil Pan Drain Plug, Magnetic, 14mm x 1.50, Includes Gasket, Chevrolet, GMC, 6.6L Duramax, Each

Part Number: PPE-114052001

4.5 out of 5 stars ( 2 )

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Summit Racing™ Standard Timing Sets SUM-TS73162

Timing Chain Kit, Single Roller Style, Cadillac, Chevy, GMC, Hummer, Isuzu, Pontiac, Saab, V8, Kit

Part Number: SUM-TS73162

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Jun 22, 2026 if ordered today

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Estimated Ship Date: Jun 22, 2026 if ordered today

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Cloyes Heavy-Duty Timing Sets C-3220

4 out of 5 stars ( 10 )

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Earl's Performance Cylinder Head Bolt Kits TBS-002ERL

Cylinder Head Fasteners, Cylinder Head Bolt Kits, 12-point Head, Chromoly, Black, Flat Washers, Chevrolet, Small Block LS, Kit

Part Number: EAR-TBS-002ERL

Not Yet Reviewed

Estimated Ship Date: Jun 15, 2026 if ordered today

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Estimated Ship Date: Jun 15, 2026 if ordered today

ATI Super Damper Diesel Harmonic Balancers ATI917378

Harmonic Balancer, Super Damper Diesel, Internal Balance, Steel, Elastomer, SFI 18.1, Each

Part Number: ATI-917378

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King SI-Series Rod Bearings CR 807SI 040

Rod Bearings, .040 in Crankshaft Undersize, Bi-metal, Silicon Aluminum, Large Journal, Chevy, Small Block, Set of 8

Part Number: KGB-CR807SI040

4.0 out of 5 stars ( 1 )

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ATK High Performance Chevy LQ4 6.0L 505 HP Long Block Crate Engines HP109

Crate Engine, Chevy LQ4 6.0L, Long Block, Internal Engine Balance, Aluminum Heads, Each

Part Number: HPE-HP109

3.0 out of 5 stars ( 2 )

Estimated Ship Date: Jul 27, 2026 if ordered today

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Estimated Ship Date: Jul 27, 2026 if ordered today

King SI-Series Rod Bearings CR 865SI 010

Rod Bearings, 0.010 in. Crankshaft Undersize, Bi-metal, Silicon Aluminum, Set of 8

Part Number: KGB-CR865SI010

5.0 out of 5 stars ( 2 )

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Pacific Performance Engineering Crankcase Breathers 114020000

Crankcase Breathers, Aluminum, Natural, Tubing Sold Separately, Chevrolet, GMC, Pair

Part Number: PPE-114020000

Not Yet Reviewed

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Dayco Demanding Drive Kits D60930K1

Accessory Belt Drive Service Kits, Demanding Drive Kits, Belt, 6-groove, Idler, Tensioner, Cadillac, Chevrolet, GMC, Small Block LS, Kit

Part Number: DAC-D60930K1

3.4 out of 5 stars ( 5 )

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Hastings Premium Ductile Ring Sets 2D4845

Piston Rings, Gas Nitrided, 4.055 in. Bore, 3.0mm, 2.0mm, 3.0mm Thickness, 8-Cylinder, Set

Part Number: HSN-2D4845

Not Yet Reviewed

Estimated Ship Date: May 14, 2026 if ordered today

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Estimated Ship Date: May 14, 2026 if ordered today

Melling Pushrods MPR-638

Pushrod, Steel, 3/8 in. Diameter, 8.190 in. Length, Ball/Ball Ends, Each

Part Number: MEL-MPR-638

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Mahle Original Valve Cover Grommets GS33466

Valve Cover Grommet, Rubber, Buick, Cadillac, Chevy, GMC, Hummer, Saab, Set of 8

Part Number: MAH-GS33466

Not Yet Reviewed

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Chevrolet Performance Valve Springs 12706568

Valve Spring, L76/L92 Style,.520 Max lift, Single Beehive, 1.290 in. o.d., 1.230 in. Coil Bind, 1.800 in. Installed Height, Each

Part Number: NAL-12706568

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ATP Graywerks Harmonic Balancers 102171

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: May 12, 2026 if ordered today

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Estimated Ship Date: May 12, 2026 if ordered today

Dura-Bond High Performance Cam Bearings CH-25-2

Cam Bearings, Direct Replacement, Bi-metal, Lead-Based Micro Babbitt, Chevy, Small Block LS, Position 2 or 4, Each

Part Number: DUR-CH-25-2

Not Yet Reviewed

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Hastings Piston Ring Sets 2M5170020

Piston Rings, Plasma-moly, 4.020 in. Bore, 1.2mm, 1.5mm, 2.5mm Thickness, 8-Cylinder, Set

Part Number: HSN-2M5170020

1.0 out of 5 stars ( 1 )

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PRW Billet Steel Timing Sets 5034611

Timing Chain and Gear Set, Roller, Single Roller, Billet Steel Sprockets, Chevy, GMC, Small Block LS, Set

Part Number: PQX-5034611

Not Yet Reviewed

Estimated Ship Date: Jul 1, 2026 if ordered today

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Estimated Ship Date: Jul 1, 2026 if ordered today

Cloyes Replacement Timing Chains 9-131-5

Replacement Timing Chain, True Roller, Chevy, Pontiac, 0.005 in. Reduced Center, Each

Part Number: CLO-9-131-5

Not Yet Reviewed

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Fluidampr Harmonic Dampers 760131

Harmonic Balancer, Chevy, GMC, 6.6L Duramax, Internal Balance, Steel, Black, Each

Part Number: FLU-760131

Not Yet Reviewed

Estimated Ship Date: May 28, 2026 if ordered today

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Estimated Ship Date: May 28, 2026 if ordered today

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ATI Super Damper Diesel Harmonic Balancers ATI917378

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Melling Pushrods MPR-639

Pushrod, Steel, 3/8 in. Diameter, 9.132 in. Length, Ball/Ball Ends, Each

Part Number: MEL-MPR-639

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Pacific Performance Engineering Aluminum Oil Pans 114052020

Oil Pan, Aluminum, Black, 5 qt., Chevrolet, GMC, 6.6L, Diesel, Each

Part Number: PPE-114052020

5.0 out of 5 stars ( 2 )

Estimated Ship Date: May 22, 2026 if ordered today

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Estimated Ship Date: May 22, 2026 if ordered today

Melling Rocker Arms MR-954

Rocker Arm, Non-roller, Stud Mounting Style, Steel, Natural, Chevy, 8.1L, Each

Part Number: MEL-MR-954

5.0 out of 5 stars ( 2 )

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Melling Oil Pumps M307

Oil Pump, Standard-Volume, Standard-Pressure, Chev, Big Block, 7.4L, Each

Part Number: MEL-M307

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