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

PRW Billet Rocker Arm Stud Girdles 1535002

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

Part Number: PQX-1535002

Not Yet Reviewed

Estimated Ship Date: Feb 27, 2026 if ordered today

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Estimated Ship Date: Feb 27, 2026 if ordered today

Melling Rocker Arm Pivot Balls MRM-1731

Melling Rocker Arm Pivot Balls MRM-1731

Rocker Arm Pivot Ball, Steel, 3/8 in., Chevy, Small Block, Each

Part Number: MEL-MRM-1731

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 872001

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

Part Number: PIO-872001

4.0 out of 5 stars ( 6 )

Estimated Ship Date: Friday 1/2/2026

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Estimated Ship Date: Friday 1/2/2026

Dorman Oil Pan Drain Plugs 65147

Oil Pan Drain Plug, 1/2-20 in. Thread Size, Seal, Buick, Cadillac, Chevy, GMC, Chrysler, Dodge, Plymouth, Jeep, Each

Part Number: RNB-65147

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

Timken Harmonic Balancer Repair Sleeves 88176

Repair Sleeve, Harmonic Balancer, Steel, Each

Part Number: TMK-88176

4.17 out of 5 stars ( 6 )

Estimated Ship Date: Friday 1/2/2026

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Estimated Ship Date: Friday 1/2/2026

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: Friday 1/2/2026

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Estimated Ship Date: Friday 1/2/2026

PRW Pro Series Stainless Steel Rocker Arms 0235011

Rocker Arms, Pro Series, Stud Mount, Full Roller, Stainless Steel, Natural, 1.55 Ratio, Fits 7/16 in. Stud, Chevy, Small Block, Set of 16

Part Number: PQX-0235011

Not Yet Reviewed

Estimated Ship Date: Mar 4, 2026 if ordered today

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Estimated Ship Date: Mar 4, 2026 if ordered today

Need It Sooner? We recommend these similar substitute parts:

PRW Elite Series Stainless Steel Full Roller Rocker Arms 62350716

Not Yet Reviewed

Estimated Ship Date: Friday 1/2/2026

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King HP-Series Rod Bearings CR 807HPN 011

Rod Bearings, HP-Series, .011 in. Crankshaft Undersize, Bi-metal, Silicon Aluminum, Large Journal, Chevy, Small Block, Set of 8

Part Number: KGB-CR807HPN011

Not Yet Reviewed

Estimated Ship Date: Friday 1/2/2026

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Estimated Ship Date: Friday 1/2/2026

Melling M-Select Class 4 Camshafts 22410

CAMSHAFT-ENGINE

Part Number: MEL-22410

Not Yet Reviewed

Estimated Ship Date: Jan 26, 2026 if ordered today

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Estimated Ship Date: Jan 26, 2026 if ordered today

Melling M-Select Class 2 Camshafts 22232

Camshaft, Hydraulic Flat Tappet, 304/287 Advertised Duration, .468/.480 in. Lift, Chevy, Small Block, Each

Part Number: MEL-22232

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Jan 26, 2026 if ordered today

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Estimated Ship Date: Jan 26, 2026 if ordered today

Mr. Gasket Advance and Retard Camshaft Bushing Sets 85

Bushing Kit, Cam Advance/Retard, 0/2/4/6/8 Degree, Chevy/Mopar, Small/Big Block, Kit

Part Number: MRG-85

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 060

Rod Bearings, .060 in Crankshaft Undersize, Bi-metal, Silicon Aluminum, Large Journal, Chevy, Small Block, Set of 8

Part Number: KGB-CR807SI060

Not Yet Reviewed

Estimated Ship Date: Friday 1/2/2026

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Estimated Ship Date: Friday 1/2/2026

Melling M-Select Class 1 Camshafts 22110

Camshaft, Hydraulic Flat Tappet, 278/288 Advertised Duration, .421/.443 in. Lift, Chevy, Small Block, Each

Part Number: MEL-22110

Not Yet Reviewed

Estimated Ship Date: Jan 26, 2026 if ordered today

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Estimated Ship Date: Jan 26, 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: Mar 3, 2026 if ordered today

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Estimated Ship Date: Mar 3, 2026 if ordered today

Pioneer Automotive Valve Locks SS-555-HD

Valve Locks

Part Number: PIO-SS-555-HD

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

Cloyes Race Billet True Roller Timing Sets 9-3600WX9

Timing Chain and Gears, Double Roller, Billet Steel Sprockets, Chevy, Set

Part Number: CLO-9-3600WX9

Not Yet Reviewed

Estimated Ship Date: Jan 12, 2026 if ordered today

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Estimated Ship Date: Jan 12, 2026 if ordered today

COMP Cams Xtreme Turbo Camshafts 12-253-4

Camshaft, Hydraulic Flat Tappet, Advertised Duration 262/269, Lift .462/.455, Chevy, Small Block, Each

Part Number: CCA-12-253-4

Not Yet Reviewed

Estimated Ship Date: Feb 23, 2026 if ordered today

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Estimated Ship Date: Feb 23, 2026 if ordered today

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: Friday 1/2/2026

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Estimated Ship Date: Friday 1/2/2026

Mahle Original OE Replacement Pistons S224-3543.030

Single Piston

Part Number: MAH-S2243543030

Not Yet Reviewed

Estimated Ship Date: Feb 2, 2026 if ordered today

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Estimated Ship Date: Feb 2, 2026 if ordered today

Hastings Premium Ductile Ring Sets 2M5523020

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

Part Number: HSN-2M5523020

Not Yet Reviewed

Estimated Ship Date: Jan 15, 2026 if ordered today

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Estimated Ship Date: Jan 15, 2026 if ordered today

Perma-Cool Sandwich Oil Adapters 184

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

Part Number: PRM-184

3.0 out of 5 stars ( 2 )

Estimated Ship Date: Friday 1/2/2026

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Estimated Ship Date: Friday 1/2/2026

MAHLE Original Valves 211-1280

Intake Valve - GMC Pass. & Truck 153, 194, 215, 230, 250, 262, 265, 267, 283, 292, 305,

Part Number: MAH-2111280

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

Powermaster Alternator Brackets 2898

Bracket Polish Low Mount [SBC] for CS121/130 6.14 Mtg Alt

Part Number: PWM-2898

Not Yet Reviewed

Estimated Ship Date: Jan 20, 2026 if ordered today

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Estimated Ship Date: Jan 20, 2026 if ordered today

Hastings Steel Series Performance Ring Sets SM8556035

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

Part Number: HSN-SM8556035

Not Yet Reviewed

Estimated Ship Date: Jan 15, 2026 if ordered today

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Estimated Ship Date: Jan 15, 2026 if ordered today

Hastings Steel Series Performance Ring Sets SM8556065

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

Part Number: HSN-SM8556065

Not Yet Reviewed

Estimated Ship Date: Jan 16, 2026 if ordered today

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Estimated Ship Date: Jan 16, 2026 if ordered today