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

PRW Pro Series Billet Aluminum Rocker Arms 0335005

ROCKER ARMS, 6061 BILLET ALUM, CHEV 262-400 1955-86, 1.6 x 3/8", self-align

Part Number: PQX-0335005

Not Yet Reviewed

Estimated Ship Date: Mar 3, 2026 if ordered today

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Estimated Ship Date: Mar 3, 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 )

Estimated Ship Date: Friday 1/2/2026

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Estimated Ship Date: Friday 1/2/2026

Sealed Power MA Series Main Bearings 4124MA

Main Bearing Set;

Part Number: SLP-4124MA

3.0 out of 5 stars ( 1 )

Estimated Ship Date: Friday 1/2/2026

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Estimated Ship Date: Friday 1/2/2026

Cloyes Quick Button Two-Piece Timing Covers 9-226

Cloyes Quick Button Two-Piece Timing Covers 9-226

Timing Cover, 2-Piece, Aluminum, Natural, Chevy, Rocket Small Block, Each

Part Number: CLO-9-226

Not Yet Reviewed

Estimated Ship Date: Friday 1/2/2026

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Estimated Ship Date: Friday 1/2/2026

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 )

Estimated Ship Date: Friday 1/2/2026

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Estimated Ship Date: Friday 1/2/2026

Melling Select Billet Aluminum Oil Pumps 10050ST-700CT

Oil Pump, Select Billet Aluminum, Wet Sump Style, High-volume, Standard-pressure, 7.00 in. Depth, Buick, Chevy, GMC, Olds, Chevy Small Block, Each

Part Number: MEL-10050ST700CT

Not Yet Reviewed

Estimated Ship Date: Friday 1/2/2026

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Estimated Ship Date: Friday 1/2/2026

PRW SFI-Rated Racing Dampers 2426540

Harmonic Balancer, SFI-Rated Racing Series, Internal Balance, Steel, Black, Chevy, Small Block, W-Engine, Each

Part Number: PQX-2426540

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Friday 1/2/2026

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Estimated Ship Date: Friday 1/2/2026

PRW Billet Rocker Arm Stud Girdles 1535003

Rocker Arm Stud Girdle, Solid Bar, Polylock, Aluminum, Natural, Chevrolet, Stock Heads, Kit

Part Number: PQX-1535003

2.0 out of 5 stars ( 1 )

Estimated Ship Date: Mar 2, 2026 if ordered today

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Estimated Ship Date: Mar 2, 2026 if ordered today

Continental OE Technology Series V-belts 15411

Belt, Elite, V-Belt, 7/16 in. Width, 40.50 in. Length, Each

Part Number: CEL-15411

5.0 out of 5 stars ( 3 )

Estimated Ship Date: Friday 1/2/2026

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Estimated Ship Date: Friday 1/2/2026

Clevite H-Series Main Bearings MS-909H-21

MAIN BEARING SET

Part Number: CLE-MS909H21

Not Yet Reviewed

Estimated Ship Date: Friday 1/2/2026

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Estimated Ship Date: Friday 1/2/2026

Dorman Expansion Plugs 555-030

Freeze Plugs, Steel, 1.625 in. Diameter, AMC, Buick, Cadillac, Chevy, GMC, Chrysler, Dodge, Jeep, Set of 10

Part Number: RNB-555-030

4.0 out of 5 stars ( 4 )

Estimated Ship Date: Friday 1/2/2026

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Estimated Ship Date: Friday 1/2/2026

Continental OE Technology Series V-belts 15450

Belt, Elite, V-Belt, 7/16 in. Width, 44.50 in. Length, Each

Part Number: CEL-15450

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Friday 1/2/2026

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Estimated Ship Date: Friday 1/2/2026

Perma-Cool Sandwich Oil Adapters 185

Adapter, Oil Filter, Sandwich, Aluminum, Natural, 13/16-16 in. Thread, 3/8 in. NPT Inlet/Outlet, Each

Part Number: PRM-185

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Friday 1/2/2026

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Estimated Ship Date: Friday 1/2/2026

Mr. Gasket Timing Tabs 4598

Timing Pointer, Steel, Chrome/Red, 8 in. Balancer, Chevy, Small Block, Each

Part Number: MRG-4598

4.0 out of 5 stars ( 4 )

Estimated Ship Date: Friday 1/2/2026

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Estimated Ship Date: Friday 1/2/2026

Perma-Cool Bolt-On Oil Filter Adapters 113

Adapter, Oil Filter Bypass, Bolt-On, Aluminum, Natural, 1/2 in. Inlet/Outlet, Kit

Part Number: PRM-113

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Friday 1/2/2026

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Estimated Ship Date: Friday 1/2/2026

ATI Super Damper Standard Harmonic Balancers ATI917782

Harmonic Balancer, Super Damper, Internal Balance, Steel, Black, Chevy Small Block, Pontiac 2.5L, L4, Each

Part Number: ATI-917782

Not Yet Reviewed

Estimated Ship Date: Jan 19, 2026 if ordered today

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Estimated Ship Date: Jan 19, 2026 if ordered today

Need It Sooner? We recommend these similar substitute parts:

Fluidampr Harmonic Dampers 720101

5 out of 5 stars ( 7 )

Estimated Ship Date: Friday 1/2/2026

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Melling Pushrod Guideplates MGP1034

Pushrod Guide Plates, Steel, Raised, 5/16 in. Pushrods, Chevy, Small Block, Each

Part Number: MEL-MGP1034

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Friday 1/2/2026

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Estimated Ship Date: Friday 1/2/2026

King XP-Series Main Bearings MB 557XP 020

Main Bearing, XP-Series, Copper/Lead/Nickel, 0.020 in. Crankshaft Undersize, Chevy, Small Block, Set of 5

Part Number: KGB-MB557XP020

1.0 out of 5 stars ( 1 )

Estimated Ship Date: Friday 1/2/2026

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Estimated Ship Date: Friday 1/2/2026

Hastings Premium Ductile Ring Sets 2M5523040

Piston Rings, Premium Ductile Ring Sets, 0.040 in. Oversize, 4.039 in. Bore, Plasma-moly, 1/16 in., 1/16 in., 3/16 in. Thickness, L8, V8, Set of 8

Part Number: HSN-2M5523040

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Friday 1/2/2026

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Estimated Ship Date: Friday 1/2/2026

Holley LS Swap 4WD Truck Off-Road Oil Pan Baffles 302-33

Oil Pan Baffles, Replacement, LS Swap, Off-Road Oil Pan, Aluminum, Satin Finish, for Holley 302-4, 4BK, Chevy, 4.8L, 5.3L, 5.7L, 6.0L, 6.2L, 7.0L, Kit

Part Number: HLY-302-33

Not Yet Reviewed

Estimated Ship Date: Friday 1/2/2026

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Estimated Ship Date: Friday 1/2/2026

Bosch Premium Oil Filters 3510

Oil Filter, 13/16-16 in Thread Size, GMC, Chevy, Pontiac, Checker, Am General, Hummer, Each

Part Number: BCH-3510

5.0 out of 5 stars ( 3 )

Estimated Ship Date: Friday 1/2/2026

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Estimated Ship Date: Friday 1/2/2026

Pioneer Timing Cover Fasteners S-1105

Timing Cover Fasteners, Ten 1/4 in.-20 x 7/16 in. Bolts with Lock Washers, Natural, Fits Stamped Steel Covers, Chevrolet, V8, Set of 10

Part Number: PIO-S-1105

Not Yet Reviewed

Estimated Ship Date: Friday 1/2/2026

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Estimated Ship Date: Friday 1/2/2026

Sealed Power Cam Bearings 1557M

Cam Bearings, Direct Replacement, Steel Backed Babbit, Buick, Checker, Chevy, GMC, Oldsmobile, Pontiac, L6, 250, 292, Set

Part Number: SLP-1557M

Not Yet Reviewed

Estimated Ship Date: Friday 1/2/2026

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Estimated Ship Date: Friday 1/2/2026

Pioneer Street Performance Balancers 872002

Harmonic Balancer, Street Performance, Internal Balance, Nodular Iron, Black, Chevy, Small Block, 4.3L V6

Part Number: PIO-872002

4.73 out of 5 stars ( 11 )

Estimated Ship Date: Jan 19, 2026 if ordered today

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Estimated Ship Date: Jan 19, 2026 if ordered today

Hastings Claimer Series Performance Piston Ring Sets CM5532020

Engine Piston Ring Set, 8-Cyl Ring Set; Plasma Moly

Part Number: HSN-CM5532020

Not Yet Reviewed

Estimated Ship Date: Friday 1/2/2026

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Estimated Ship Date: Friday 1/2/2026