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

Mr. Gasket Engine Dress-Up Kits 9834BP

KIT, DRESS-UP SB CHEV FLAT BLK

Part Number: MRG-9834BP

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King HP-Series Main Bearings MB 557HP 011

Main Bearings, HP-Series, Silicon Aluminum, 0.011 in. Crankshaft Undersize, Chevy, Small Block, Set of 5

Part Number: KGB-MB557HP011

Not Yet Reviewed

Estimated Ship Date: May 21, 2026 if ordered today

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Estimated Ship Date: May 21, 2026 if ordered today

Pioneer Automotive Connecting Rod Bolts S-1035

CONN ROD BOLTS

Part Number: PIO-S-1035

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

Sealed Power Performance Piston Ring Sets E-217K 30

Sealed Power Performance Piston Ring Sets E-217K 30

Piston Rings, Moly, 3.905 in. Bore, 3/32 in., 3/32 in., 3/16 in. Thickness, L6, Set

Part Number: SLP-E-217K30

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Pioneer Timing Covers 500350S

Timing Cover, Steel, Natural, Chevrolet, Small Block, Each

Part Number: PIO-500350S

2.0 out of 5 stars ( 1 )

Estimated Ship Date: Mar 12, 2026 if ordered today

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Estimated Ship Date: Mar 12, 2026 if ordered today

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ATP Timing Covers 103120

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King HP-Series Rod Bearings CR 807HPND 001

Rod Bearings, HP-Series, Silicon Aluminum, 0.001 in. Crankshaft Undersize, Large Journal, Chevy, Set of 8

Part Number: KGB-CR807HPND001

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King HP-Series Rod Bearings CR 807HPN 030

Rod Bearings, HP-Series, .030 in. Crankshaft Undersize, Bi-metal, Silicon Aluminum, Large Journal, Chevy, Small Block, Set of 8

Part Number: KGB-CR807HPN030

Not Yet Reviewed

Estimated Ship Date: May 22, 2026 if ordered today

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Estimated Ship Date: May 22, 2026 if ordered today

Hastings Premium Ductile Ring Sets 2M5523035

Piston Rings, Premium Ductile Ring Sets, 0.035 in. Oversize, 4.035 in. Bore, Plasma-moly, 1/16 in., 1/16 in., 3/16 in. Thickness, L8, V8, Set of 8

Part Number: HSN-2M5523035

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Estimated Ship Date: Mar 10, 2026 if ordered today

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Estimated Ship Date: Mar 10, 2026 if ordered today

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Sealed Power File-Fit Plasma-Moly Piston Rings R977135

5 out of 5 stars ( 1 )

Estimated Ship Date: Tomorrow

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Milodon Oil Filter Adapters 21565

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

Part Number: MIL-21565

3.6 out of 5 stars ( 5 )

Estimated Ship Date: Tomorrow

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Cloyes Replacement Timing Chains 9-131-10

Replacement Timing Chain, True Roller, Chevy, Pontiac, 0.010 in. Reduced Center, Each

Part Number: CLO-9-131-10

Not Yet Reviewed

Estimated Ship Date: Mar 9, 2026 if ordered today

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Estimated Ship Date: Mar 9, 2026 if ordered today

Professional Products Restoration Harmonic Balancers 85001

Harmonic Balancer, Restoration Balancer, Internal Balance, Nodular Iron, 6.750 in. Diameter, Chevy Orange, Chevy, Small Block, Each

Part Number: PFS-85001

Not Yet Reviewed

Estimated Ship Date: Mar 16, 2026 if ordered today

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Estimated Ship Date: Mar 16, 2026 if ordered today

Hastings Premium Ductile Ring Sets 2M5523045

Piston Rings, Premium Ductile Ring Sets, 0.045 in. Oversize, 4.045 in. Bore, Plasma-moly, 1/16 in., 1/16 in., 3/16 in. Thickness, L8, V8, Set of 8

Part Number: HSN-2M5523045

Not Yet Reviewed

Estimated Ship Date: Mar 11, 2026 if ordered today

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Estimated Ship Date: Mar 11, 2026 if ordered today

Professional Products Restoration Harmonic Balancers 85002

Harmonic Balancer, Restoration Balancer, Internal Balance, Nodular Iron, 8.000 in. Diameter, Chevy Orange, Chevy, Small Block, Each

Part Number: PFS-85002

Not Yet Reviewed

Estimated Ship Date: Mar 16, 2026 if ordered today

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Estimated Ship Date: Mar 16, 2026 if ordered today

ATP Graywerks Harmonic Balancers 102036

Harmonic Balancer, Internal Balance, Nodular Iron, Chevy/GMC, Small Block, Each

Part Number: ATP-102036

Not Yet Reviewed

Estimated Ship Date: Mar 9, 2026 if ordered today

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Estimated Ship Date: Mar 9, 2026 if ordered today

PRW Main Girdle Stud Kits 1000203

CHEV 350 Stud Kit, Main Girdle, , Includes 10ea, 1/2" Longer Studs, 7/16" -14/20 x 5.00" Studs, PRW Fasteners & Hardware.

Part Number: PQX-1000203

Not Yet Reviewed

Estimated Ship Date: Apr 27, 2026 if ordered today

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Estimated Ship Date: Apr 27, 2026 if ordered today

Hastings Piston Ring Sets C5532040

Engine Piston Ring Set, 8-Cyl Ring Set; Phosphate

Part Number: HSN-C5532040

Not Yet Reviewed

Estimated Ship Date: Mar 10, 2026 if ordered today

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Estimated Ship Date: Mar 10, 2026 if ordered today

King HP-Series Rod Bearings CR 807HPND 011

Rod Bearings, HP-Series, Silicon Aluminum, 0.011 in. Crankshaft Undersize, Large Journal, Chevy, Set of 8

Part Number: KGB-CR807HPND011

Not Yet Reviewed

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King HP-Series Main Bearings MB 557HP 030

Main Bearings, HP-Series, Silicon Aluminum, 0.030 in. Crankshaft Undersize, Chevy, Small Block, Set of 5

Part Number: KGB-MB557HP030

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Flex-A-Lite Oil Filter Sandwich Adapters 108595

Adapter, Oil Filter, Sandwich, Aluminum, Natural, 13/16-16 in. Thread, Each

Part Number: FLX-108595

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Cloyes Replacement Timing Chains 9-131

Replacement Timing Chain, True Roller, Chevy, Pontiac, Each

Part Number: CLO-9-131

Not Yet Reviewed

Estimated Ship Date: Mar 9, 2026 if ordered today

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Estimated Ship Date: Mar 9, 2026 if ordered today

Sealed Power Cam Bearings 2100M

Cam Bearings, Performance, Steel Backed Babbit, Chevy, 4.6L, 5.0L, 5.4L, 5.7L, Set

Part Number: SLP-2100M

2.5 out of 5 stars ( 2 )

Estimated Ship Date: Tomorrow

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Mahle Original Standard Piston Ring Sets 50564CP.060

Piston Rings, Standard Piston Ring Sets, Cast Iron, 4.060 in. Bore, 5/64 in., 5/64 in., 3/16 in. Thickness, V8, Set

Part Number: MAH-50564CP060

Not Yet Reviewed

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PRW Power Plus Nitro-Carb Steel Rocker Arms 6028316

Rocker Arms, Stud Mount, Non-Roller, Stamped Steel, Nitro Carb, 1.6 Ratio, Fits 3/8 in. Stud, Long Slot, Chevy, Small Block, Set of 16

Part Number: PQX-6028316

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Sealed Power MA Series Main Bearings 4124MA 40

Main Bearing Set;

Part Number: SLP-4124MA40

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

Dorman Harmonic Balancers 594-006

Harmonic Balancer, Internal Balance, Nodular Iron, Natural, Chevy/GMC Small Block, Each

Part Number: RNB-594-006

2.0 out of 5 stars ( 1 )

Estimated Ship Date: Tomorrow

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