GMC 2500 SERIES Melling Engines & Components

Oil Pump, Wet Sump Style, Standard-volume, Standard-pressure, Chevrolet, GMC, 3.8L L6, 3.9L L6, 4.3L L6, Each

Part Number: MEL-M-45

5.0 out of 5 stars ( 1 )

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

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Oil Pump, Shark Tooth, High-volume, Standard-pressure, Driveshaft, 7.500 in. Pan Depth, Buick, Cadillac, Chevrolet, GMC, Oldsmobile, Pontiac, Each

Part Number: MEL-10050ST750SS

3.67 out of 5 stars ( 3 )

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

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Camshaft, M-Select Class 1, Hydraulic Flat Tappet, Advertised Duration 278/288, Lift .420/.433, Buick, Chevy, GMC, Olds, Chevy Small Block Gen I, Each

Part Number: MEL-MTC-1

3.2 out of 5 stars ( 5 )

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

Valve Locks, Replacement, 1-groove, Steel, for 0.341 in. Valve Stem Diameter, AMC, Buick, Cadillac, Chevy, Edsel, Ford, GMC, Jeep, Olds, Mercury, Pair

Part Number: MEL-VL-200

5.0 out of 5 stars ( 1 )

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

Valve, Exhaust, Dished, Steel, 1.500 in. Diameter, 0.341 in. Stem, 4.928 in. Overall Length, Chevrolet, GMC, Pontiac, Studebaker, Each

Part Number: MEL-V0400

5.0 out of 5 stars ( 1 )

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

Oil Pump, Shark Tooth, Standard-volume, High-pressure, 6.875 in.- 7.00 in. Pan Depth, Buick, Chevy, GMC, Olds, Pontiac, Chevy Small Block Gen I, Each

Part Number: MEL-10554ST

3.71 out of 5 stars ( 7 )

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

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Pushrod, PRO-Line, Assembled, Chromoly, 5/16 in. Diameter, 7.894 in. Overall Length, Ball Tips, Each

Part Number: MEL-500614

Not Yet Reviewed

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

Oil Pump, Shark Tooth, High-volume, Pickup, Driveshaft, 8.250 in. Pan Depth, Buick, Cadillac, Chevy, GMC, Olds, Pontiac, Chevy Small Block Gen I, Each

Part Number: MEL-10050ST825SS

5.0 out of 5 stars ( 2 )

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

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Oil Pump Springs, High-Pressure, Steel, Includes Five Pink 70 psi Springs and Five Pins, Cadillac, Chevy, GMC, Pontiac, Chevy Small Block Gen I, Kit

Part Number: MEL-55070

5.0 out of 5 stars ( 1 )

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

Lifter, Mechanical Flat Tappet, 0.990 in. O.D., Chevrolet, GMC, Each

Part Number: MEL-JB-874

5.0 out of 5 stars ( 1 )

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

Valve Lock, Replacement, 0.326 in. Stem Diameter, 1-groove, Steel, Buick, Cadillac, Chevrolet, Ford, GMC, Lincoln, Mercury, Oldsmobile, Pontiac, Each

Part Number: MEL-476104

5.0 out of 5 stars ( 1 )

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

Oil Pump Pickup, Street/Strip, Bolt-in, 8.00 in. Oil Pan Depth, Buick, Cadillac, Chevy, GMC, Olds, Pontiac, Chevy Small Block Gen I, Each

Part Number: MEL-12559

5.0 out of 5 stars ( 4 )

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

Oil Pump, Wet Sump Style, Standard-volume, Standard-pressure, Buick, Chevrolet, GMC, Oldsmobile, Pontiac, Studebaker, Each

Part Number: MEL-M62

4.0 out of 5 stars ( 3 )

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

Pushrod, Assembled, Steel, 5/16 in. Diameter, Ball Bottom Tip, Cup Top Tip, 11.108 in. Overall Length, Chevrolet, GMC, Each

Part Number: MEL-MPR-32

4.0 out of 5 stars ( 1 )

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

OIL PUMP

Part Number: MEL-10055ST750SS

1.0 out of 5 stars ( 1 )

Estimated Ship Date: May 18, 2026 if ordered today

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• Special Order

Oil Pump Driveshaft, Heavy-Duty Intermediate, Chromoly Shaft Designed for Use with Melling Billet Pumps, Buick, Cadillac, Chevy, GMC, Olds, Each

Part Number: MEL-12550

5.0 out of 5 stars ( 5 )

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

Timing Chain Set, Single Roller, Iron Cam Gear, Steel Crank Gear, for Use In Engines without Factory Roller Cam, Buick, Cadillac, Chevrolet, GMC, Set

Part Number: MEL-40500

Not Yet Reviewed

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

Timing Chain and Gear Set, Double Roller, Cast Iron Cam Gear, Billet Steel Crankshaft Gear, Chevrolet, Set

Part Number: MEL-48574T-9

Not Yet Reviewed

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

Rocker Arm, Non-roller, Stud Mount, 1.5 Ratio, Fits 3/8 in. Stud, Steel, Natural, Cadillac, Chevy, GMC, Pontiac, Chevy Small Block Gen I, Each

Part Number: MEL-498404

5.0 out of 5 stars ( 1 )

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

Timing Gears, Aluminum Cam Gear, Steel Crank Gear, 54-tooth Cam Sprocket and 27-tooth Crank Sprocket, Chevrolet, GMC, 3.5L/3.8L/3.9L/4.3L L6, Set

Part Number: MEL-2516S

5.0 out of 5 stars ( 2 )

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

KIT-ENGINE CAMSHAFT/LIFTER

Part Number: MEL-CL-CCS-18

Not Yet Reviewed

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

• Free Shipping

Oil Pump Pickup, Street/Strip, Bolt-in, 7.500 in. Oil Pan Depth, Buick, Cadillac, Chevy, GMC, Olds, Pontiac, Chevy Small Block Gen I, Each

Part Number: MEL-12558

5.0 out of 5 stars ( 3 )

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

Oil Pump Springs, High-Pressure, Steel, Includes Five Green 78 psi Springs and Five Pins, Cadillac, Chevy, GMC, Pontiac, Chevy Small Block Gen I, Kit

Part Number: MEL-55078

5.0 out of 5 stars ( 1 )

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

Oil Pump Pickup, Press Fit, Stock Pan Style, 0.625 in. Tube Diameter, Chevrolet, GMC, Each

Part Number: MEL-55-S

5.0 out of 5 stars ( 1 )

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

Pushrod, PRO-Line, Assembled, Chromoly, 5/16 in. Diameter, 7.800 in. Overall Length, Ball Tips, Each

Part Number: MEL-500314

Not Yet Reviewed

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