1981 CHEVROLET K20 Engines & Components - In Stock Filter Options - Vendor In Stock Filter Options

Continental OE Technology Series V-belts 15485

Belt, Elite, V-Belt, 7/16 in. Width, 48.00 in. Length, Each

Part Number: CEL-15485

Not Yet Reviewed

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

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

Proform Harmonic Balancer Covers 66517BKC

Harmonic Balancer Cover, Aluminum, Black, 6 3/4 in. Diameter, Degree Markings, Chevy, Small Block, Each

Part Number: PRO-66517BKC

5.0 out of 5 stars ( 4 )

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

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

Continental OE Technology Series V-belts 13465

Belt, Elite, V-Belt, 3/8 in. Width, 46.50 in. Length, Each

Part Number: CEL-13465

5.0 out of 5 stars ( 2 )

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

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

Hastings Piston Ring Sets 139S

Piston Rings, Piston Ring Sets, Phosphate Coated, 4.000 in. Bore, 5/64 in., 5/64 in., 3/16 in. Thickness, for Single Piston, Set

Part Number: HSN-139S

Not Yet Reviewed

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

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

Sealed Power CP-Series Rod Bearings 8-2555CP 1

Sealed Power CP-Series Rod Bearings 8-2555CP 1

Rod Bearings, CP-Series, Tri Metal, 0.001 in. Crankshaft Undersize, Chevy, Small Block, Set of 8

Part Number: SLP-8-2555CP1

4.33 out of 5 stars ( 3 )

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

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

Proform Harmonic Balancer Covers 66518CC

Harmonic Balancer Cover, Aluminum, Chrome, 8 in. Diameter, Degree Markings, Chevy, Small Block, Each

Part Number: PRO-66518CC

4.0 out of 5 stars ( 3 )

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

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

Mr. Gasket Cam Locking Plate and Bolt Kits 948G

Camshaft Bolt and Lock Plate, Steel, Black Oxide, Chevy, Kit

Part Number: MRG-948G

5.0 out of 5 stars ( 1 )

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

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

Continental OE Technology Series V-belts 15530

Belt, Elite, V-Belt, 7/16 in. Width, 52.50 in. Length, Each

Part Number: CEL-15530

5.0 out of 5 stars ( 3 )

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

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

Sealed Power MA Series Main Bearings 4663MA 20

Main Bearing Set;

Part Number: SLP-4663MA20

5.0 out of 5 stars ( 1 )

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

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

Mahle Original Standard Piston Ring Sets 50564CP.020

Piston Rings, Standard Piston Ring Sets, Cast Iron, 4.020 in. Bore, 5/64 in., 5/64 in., 3/16 in. Thickness, V8, Set

Part Number: MAH-50564CP020

Not Yet Reviewed

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

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

Proform Harmonic Balancer Covers 66517CC

Harmonic Balancer Cover, Aluminum, Chrome, 6 3/4 in. Diameter, Degree Markings, Chevy, Small Block, Each

Part Number: PRO-66517CC

4.0 out of 5 stars ( 4 )

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

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

Sealed Power A-Series Rod Bearings 8-2555A X2

Connecting Rod Bearing Set

Part Number: SLP-82555AX2

Not Yet Reviewed

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

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

Hastings Piston Ring Sets 139010

Piston Rings, Phosphate Coated, 4.010 in. Bore, 5/64 in., 5/64 in., 3/16 in. Thickness, 8-Cylinder, Set

Part Number: HSN-139010

Not Yet Reviewed

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

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

Continental OE Technology Series V-belts 15561

Belt, Elite, V-Belt, 7/16 in. Width, 55.50 in. Length, Each

Part Number: CEL-15561

5.0 out of 5 stars ( 2 )

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

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

Pioneer Performance Freeze Plugs PE-100-BR

Freeze Plug Kit, Brass, Chevy, Small Block, Kit

Part Number: PIO-PE100BR

Not Yet Reviewed

Estimated Ship Date: Mar 12, 2026 if ordered today

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Estimated Ship Date: Mar 12, 2026 if ordered today

Hastings Premium Ductile Ring Sets 2M139S

Piston Rings, Premium Ductile Ring Sets, Plasma-moly, 4.000 in. Bore, 5/64 in., 5/64 in., 3/16 in. Thickness, for Single Piston, Set

Part Number: HSN-2M139S

Not Yet Reviewed

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

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

Mr. Gasket Alternator Brackets 4954

Bracket, Alternator, Steel, Chrome, Lower, Chevy, Small Block, Each

Part Number: MRG-4954

5.0 out of 5 stars ( 2 )

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

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

Cloyes Timing Camshaft Sprockets 2526

Camshaft Sprocket, Aluminum, 54-Tooth, Chevy, GMC, Oldsmobile, Pontiac, 230, 250, 292, Each

Part Number: CLO-2526

Not Yet Reviewed

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

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

Proform Harmonic Balancer Covers 141-725

Harmonic Balancer Cover, Aluminum, Chrome, 6 3/4 in. Diameter, Degree Markings, Chevy, Small Block, Each

Part Number: PRO-141-725

4.5 out of 5 stars ( 2 )

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

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

Hastings Premium Ductile Ring Sets 2M139S040

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

Part Number: HSN-2M139S040

Not Yet Reviewed

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

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

Mahle Original OE Replacement Pistons S224-3543.030

Single Piston

Part Number: MAH-S2243543030

Not Yet Reviewed

Estimated Ship Date: Mar 25, 2026 if ordered today

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Estimated Ship Date: Mar 25, 2026 if ordered today

Hastings Claimer Series Performance Piston Ring Sets CM5532S030

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

Part Number: HSN-CM5532S030

Not Yet Reviewed

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

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

Continental OE Technology Series V-belts 15591

Belt, Elite, V-Belt, 7/16 in. Width, 58.50 in. Length, Each

Part Number: CEL-15591

Not Yet Reviewed

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

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

ACDelco V-Ribbed Accessory Belts 88934360

Accessory Belts, V-Ribbed, V-groove, 0.410 in. Width, 56.08 in. Length, Cadillac, Chevy, Chrysler, Dodge, GMC, International, Plymouth, Pontiac, Each

Part Number: ADO-15555

Not Yet Reviewed

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

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

ACDelco V-Ribbed Accessory Belts 88934310

Accessory Belt, V-ribbed, Serpentine, 37.98 in. Length, 0.410 in. Width, Each

Part Number: ADO-15380

Not Yet Reviewed

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

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