1981 CHEVROLET K20 Engines & Components

Valve Cover Hold, Down Tabs, Steel, Chevy, Pontiac, V6/V8, Set of 4

Part Number: FEL-ES72676

4.5 out of 5 stars ( 4 )

Estimated Ship Date: Monday 2/23/2026 if shipped by air

Alternator Bracket, Steel, Chrome, Long Water Pump, Chevy, Small Block, Each

Part Number: MRG-5170

Not Yet Reviewed

Estimated Ship Date: Monday 2/23/2026 if shipped by air

Piston Rings, Cast Iron, 4.040 in. Bore, 5/64 in., 5/64 in., 3/16 in. Thickness, 8-Cylinder, Set

Part Number: SLP-E-251X40

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Monday 2/23/2026 if shipped by air

Main Bearing Set;

Part Number: SLP-4663MA

4.88 out of 5 stars ( 8 )

Estimated Ship Date: Monday 2/23/2026 if shipped by air

Alternator Bracket, Steel, Natural, Header Mount, Short Water Pump, Chevy, Small Block, Each

Part Number: BIG-10031FLT

3.94 out of 5 stars ( 18 )

Estimated Ship Date: Monday 2/23/2026 if shipped by air

Valve Covers, Stock Height, Steel, Chrome, Plain, Chevy, Small Block, Pair

Part Number: MRG-9800

4.0 out of 5 stars ( 2 )

Estimated Ship Date: Monday 2/23/2026 if shipped by air

Rocker Arm Nuts, Stamped Steel Rockers, 3/8 in.-24 Thread, .603 in. Outside Diameter, Set of 16

Part Number: MRG-920G

5.0 out of 5 stars ( 9 )

Estimated Ship Date: Monday 2/23/2026 if shipped by air

Oil Pump, Standard-Volume, GM/Studebaker, 153/194/215/230/250, L4-L6, Each

Part Number: MEL-M62

4.0 out of 5 stars ( 3 )

Estimated Ship Date: Monday 2/23/2026 if shipped by air

Piston Rings, Plasma-moly, 4.020 in. Bore, 5/64 in., 5/64 in., 3/16 in. Thickness, 8-Cylinder, Set

Part Number: HSN-2M139020

5.0 out of 5 stars ( 4 )

Estimated Ship Date: Monday 2/23/2026 if shipped by air

Freeze Plug, Brass, Small Block, Chevy, Kit

Part Number: MRG-6481

Not Yet Reviewed

Estimated Ship Date: Monday 2/23/2026 if shipped by air

Harmonic Balancer Bolt, 12-Point, Chromoly, 7/16-20 Thread Size, Chevy, Small Block, Each

Part Number: PQX-1042265

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Monday 2/23/2026 if shipped by air

Oil Filters, Canister Style, 13/16 -16 in. Thread Size, 3.60 in. O.D, 7.82 in. Height, Chevy, GMC, Each

Part Number: WIX-51794R

Not Yet Reviewed

Estimated Ship Date: Monday 2/23/2026 if shipped by air

Piston Rings, Plasma-moly, 4.059 in. Bore, 5/64 in., 5/64 in., 3/16 in. Thickness, 8-Cylinder, Set

Part Number: HSN-2M139060

Not Yet Reviewed

Estimated Ship Date: Monday 2/23/2026 if shipped by air

Piston Rings, Cast Iron, 4.060 in. Bore, 5/64 in., 5/64 in., 3/16 in. Thickness, 8-Cylinder, Set

Part Number: SLP-E-251X60

5.0 out of 5 stars ( 3 )

Estimated Ship Date: Monday 2/23/2026 if shipped by air

Adapter, Oil Filter Bypass, Bolt-On, Aluminum, Natural, 13/16-16 in. Thread, Each

Part Number: MRG-1272

3.33 out of 5 stars ( 6 )

Estimated Ship Date: Monday 2/23/2026 if shipped by air

Power Steering Pulley, V-belt Style, 2-groove, Press Fit, Steel, Chrome, 5.82 in. O.D., 0.750 in. Bore, Each

Part Number: LSC-157

4.5 out of 5 stars ( 2 )

Estimated Ship Date: Monday 2/23/2026 if shipped by air

Main Bearings, .020 in. Over Size, Tri Metal, 1/2 Groove, Chevrolet, Small Block, Set of 5

Part Number: SLP-4663M20

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 2/23/2026 if shipped by air

Oil Pickup, Bolt-In, Aftermarket Pan Style, 8.000 in. Pan Depth, Chevy, Small Block, 3/4 in. Tube, Each

Part Number: MEL-12559

5.0 out of 5 stars ( 4 )

Estimated Ship Date: Monday 2/23/2026 if shipped by air

Oil Filter, Chrome, 13/16-16 in. UNF Thread, 4.281 in. High, Each

Part Number: MOR-22300

5.0 out of 5 stars ( 9 )

Estimated Ship Date: Monday 2/23/2026 if shipped by air

Timing Chain and Gear Set, Heavy Duty, Double Roller, Iron/Billet Steel Sprockets, Chevy, V6/V8, Set

Part Number: CLO-C3023SP

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 2/23/2026 if shipped by air

Main Bearings, 1/2 Groove, .001 in. Crankshaft Undersize, Bi-metal, Silicon Aluminum, Chevy, Small Block, Set of 5

Part Number: KGB-MB557SI001

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Monday 2/23/2026 if shipped by air

Timing Chain and Gears, Double Roller, Steel Sprockets, Chevy, Small Block, Kit

Part Number: MAN-73163

4.0 out of 5 stars ( 4 )

Estimated Ship Date: Monday 2/23/2026 if shipped by air

Oil Pickup, Bolt-In, Aftermarket Pan Style, 7.500 in. Pan Depth, Chevy, Small Block, Each

Part Number: MEL-12558

5.0 out of 5 stars ( 3 )

Estimated Ship Date: Monday 2/23/2026 if shipped by air

Main Bearings, AL-Series, 1/2 Groove, Standard Size, AL-5, Chevrolet, Small Block, Set of 5

Part Number: CLE-MS909A

Not Yet Reviewed

Estimated Ship Date: Monday 2/23/2026 if shipped by air

Main Bearings, 1/2 Groove, .020 in. Crankshaft Undersize, Bi-metal, Silicon Aluminum, Chevy, Small Block, Set of 5

Part Number: KGB-MB557SI020

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 2/23/2026 if shipped by air