Holley Engines & Components

Holley Mid-Mount Complete Accessory Systems 20-190BK

Accessory Drive Systems, LS Mid-Mount, Serpentine, Alternator, Power Steering, Water Pump, AC, Pulleys, 6-groove, Black Finish, Chevy, 4.8-7.0L, Kit

Part Number: HLY-20-190BK

Not Yet Reviewed

Estimated Ship Date: May 13, 2026 if ordered today

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Estimated Ship Date: May 13, 2026 if ordered today

Holley Aluminum LS Valve Covers 241-97

Valve Covers, Aluminum LS, Centerbolt, Tall, Plain Top, Cast Aluminum, Black Satin, Baffled, Chevy, LS, 4.8L, 5.3L, 5.7L, 6.0L, 6.2L, 7.0L, Pair

Part Number: HLY-241-97

Not Yet Reviewed

Estimated Ship Date: Monday 4/27/2026 if shipped by air

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Estimated Ship Date: Monday 4/27/2026 if shipped by air

Holley Dipstick Drill Guides 302-31

Drill Guides, Dipstick Drill Guide, Billet Steel, Black Finish, LS7, Dry Sump, Conversion, Each

Part Number: HLY-302-31

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Monday 4/27/2026 if shipped by air

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Estimated Ship Date: Monday 4/27/2026 if shipped by air

Holley Mid-Mount Complete Accessory Systems 20-291

Accessory Drive Systems, Gen III, Hemi VVT, Mid-Mount System, Natural Finish, Alternator, A/C, P/S, Water Pump, Chrysler, Dodge, 5.7L, 6.4L, Kit

Part Number: HLY-20-291

Not Yet Reviewed

Estimated Ship Date: May 13, 2026 if ordered today

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Estimated Ship Date: May 13, 2026 if ordered today

Holley Aluminum LS Valve Covers 241-403

Valve Covers, Aluminum LS, Centerbolt, Tall, Chevrolet Logo, Cast Aluminum, Orange Gloss, Baffled, Chevy, LS, 5.7L, 6.0L, 6.2L, 7.0L, Pair

Part Number: HLY-241-403

Not Yet Reviewed

Estimated Ship Date: Monday 4/27/2026 if shipped by air

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Estimated Ship Date: Monday 4/27/2026 if shipped by air

Holley LS Engine Accessory Drive Kits 20-131BK

Accessory Drive Bracket Kits, for R4 A/C Compressor, Aluminum, Black, Chevy, LS, Kit

Part Number: HLY-20-131BK

Not Yet Reviewed

Estimated Ship Date: Monday 4/27/2026 if shipped by air

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Estimated Ship Date: Monday 4/27/2026 if shipped by air

Holley Ford 7.3L Godzilla Rear Block Plug Kits 97-426

Plug Fittings, Rear Block Plug, Bolt-on, Steel Plug, Zinc Finish, Bracket, O-ring Seal, Internal Allen Retaining Bolt, Ford, 7.3L, Godzilla, Kit

Part Number: HLY-97-426

Not Yet Reviewed

Estimated Ship Date: Monday 4/27/2026 if shipped by air

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Estimated Ship Date: Monday 4/27/2026 if shipped by air

Holley Mid-Mount Complete Accessory Systems 20-221

Accessory Drive Systems, LT Mid-Mount, Dry Sump, Serpentine, Alternator, Water Pump, Power Steering, A/C, Satin Finish, Chevy, Gen V, 6.2L, Kit

Part Number: HLY-20-221

Not Yet Reviewed

Estimated Ship Date: May 13, 2026 if ordered today

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Estimated Ship Date: May 13, 2026 if ordered today

Holley Aluminum LS Valve Covers 241-404

Valve Covers, Tall -plus 0.54 in. Inside, Centerbolt, Chevrolet Logo, Cast Aluminum, Red Gloss Finish, Baffled, w/Grommets, Hardware, Chevy, LS, Pair

Part Number: HLY-241-404

4.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 4/27/2026 if shipped by air

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Estimated Ship Date: Monday 4/27/2026 if shipped by air

Holley Gen III Hemi Alternator Relocation Kits 97-368

Alternator Brackets, Relocation Bracket, Low Inward, Right Side, Steel, Black Powdercoat, for 197-302, 197-303 Holley Alternators, Gen III, Hemi, Each

Part Number: HLY-97-368

Not Yet Reviewed

Estimated Ship Date: Monday 4/27/2026 if shipped by air

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Estimated Ship Date: Monday 4/27/2026 if shipped by air

Holley Mid-Mount Complete Accessory Systems 20-186P

Accessory Drive Systems, LS Mid-mount, Serpentine, Alternator, Water Pump, Counterclockwise, Power Steering, GM 2, Polished, Chevy, 4.8-7.0L, Kit

Part Number: HLY-20-186P

Not Yet Reviewed

Estimated Ship Date: May 14, 2026 if ordered today

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Estimated Ship Date: May 14, 2026 if ordered today

Need It Sooner? We recommend these similar substitute parts:

March Performance Chevy LS Series Serpentine Kits 20085-08

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Estimated Ship Date: Monday 4/27/2026

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Holley Idler Pulleys 97-153

Idler Pulleys, Holley, Replacement, 6-groove, LS Serpentine, Black, Plastic, 2.323 in. Diameter, for Holley LS Accessory Drive, Passenger Side, Each

Part Number: HLY-97-153

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Monday 4/27/2026 if shipped by air

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Estimated Ship Date: Monday 4/27/2026 if shipped by air

Holley High-Mount Complete Accessory Systems 20-170

Accessory Drive Systems, Mid-Mount, Serpentine, Water Pump, Power Steering, A/C, Pulleys, with Hardware, Natural Finish, Chevy, LT, 5.3L, 6.2L, Kit

Part Number: HLY-20-170

Not Yet Reviewed

Estimated Ship Date: May 13, 2026 if ordered today

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Estimated Ship Date: May 13, 2026 if ordered today

Holley Replacement Accessory Drive Hardware 97-302

Engine Accessory Bracket Components, Replacement, Hardware, Steel, Nickel Finish, for Cooling Manifold, 20-240, Chevy, Small Black, Kit

Part Number: HLY-97-302

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 4/27/2026 if shipped by air

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Estimated Ship Date: Monday 4/27/2026 if shipped by air

Holley LS Engine Swap Accessory Drive Systems 20-138BK

Pulley Sets, Serpentine, LS Engine Swap Accessory Drive System, Sanden 7B10 A/C Only, Black Powdercoated, Chevy, GMC, V8, Kit

Part Number: HLY-20-138BK

5.0 out of 5 stars ( 1 )

Estimated Ship Date: May 13, 2026 if ordered today

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Estimated Ship Date: May 13, 2026 if ordered today

Holley LS Engine Swap Accessory Drive Systems 20-136

Pulley Kits, LS Swap, Serpentine, Alternator, Power Steering, A/C, GM Type 2, 130 Amp Alternator, Natural, Kit

Part Number: HLY-20-136

3.0 out of 5 stars ( 1 )

Estimated Ship Date: May 13, 2026 if ordered today

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Estimated Ship Date: May 13, 2026 if ordered today

Holley LS Engine Oil Fill Caps 241-224

Oil Fill Caps, LS Engine, Twist-in, Octagon Shape, Black, Plastic, Billet Aluminum Insert, Domed Holley Decal, Each

Part Number: HLY-241-224

Not Yet Reviewed

Estimated Ship Date: Monday 4/27/2026 if shipped by air

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Estimated Ship Date: Monday 4/27/2026 if shipped by air

Holley Vintage Series Valve Covers 241-249

Valve Covers, Vintage Series, Centerbolt, Finned, Holley Logo, Cast Aluminum, Orange Gloss Finish, Baffled, Chevy, 5.0L, 5.7L, Pair

Part Number: HLY-241-249

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Monday 4/27/2026 if shipped by air

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Estimated Ship Date: Monday 4/27/2026 if shipped by air

Holley Gen III Hemi Timing Covers 97-372

Timing Covers, Replacement, Natural Finish, for Mid-Mount Accessory Drive 20-290, 20-292, Gen III, Hemi, Non-VVT, Cast Aluminum, 5.7L, 6.1L, Each

Part Number: HLY-97-372

Not Yet Reviewed

Estimated Ship Date: May 13, 2026 if ordered today

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Estimated Ship Date: May 13, 2026 if ordered today

Holley LS Tensioner Assemblies 97-156

Accessory Belt Tensioners, Holley, LS Assembly, Serpentine, Smooth Pulley, with Low-Mount A/C, for Holley Accessory Drive Only, Chevy, 4.8-7.0L, Each

Part Number: HLY-97-156

4.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 4/27/2026 if shipped by air

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Estimated Ship Date: Monday 4/27/2026 if shipped by air

Holley Ford 7.3L Godzilla Oil Pan Baffles 302-105

Oil Pan Baffles, Replacement, Steel, Zinc Plated, Hinge Door Design, for Holley 20-320, 320BK, 20-340, 340BK, Ford 7.3L Godzilla, Each

Part Number: HLY-302-105

Not Yet Reviewed

Estimated Ship Date: May 13, 2026 if ordered today

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Estimated Ship Date: May 13, 2026 if ordered today

Holley LS Engine Accessory Drive Kits 21-2BK

Accessory Drive Bracket Spacer Kits, Aluminum, Black Finish, Middle Alignment, Chevy, Small Block LS, Each

Part Number: HLY-21-2BK

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 4/27/2026 if shipped by air

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Estimated Ship Date: Monday 4/27/2026 if shipped by air

Holley Block-Off Kit for T4 Wet Cooler Feed Ports for 2017-2024 CAMARO, 2015-2019 CORVETTE - 97-209

Oil Cooler Block-Off , Mechanical, Holley, LT4 Wet Cooler, Feed Port, Aluminum, Red Anodized, Each

Part Number: HLY-97-209

Not Yet Reviewed

Estimated Ship Date: Monday 4/27/2026 if shipped by air

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Estimated Ship Date: Monday 4/27/2026 if shipped by air

Holley LS Engine Swap Accessory Drive Systems 20-142

Pulley Sets, Serpentine, LS Engine Swap Accessory Drive System, Sanden 7 A/C Only, Chevy, V8, Kit

Part Number: HLY-20-142

4.83 out of 5 stars ( 6 )

Estimated Ship Date: Monday 4/27/2026 if shipped by air

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Estimated Ship Date: Monday 4/27/2026 if shipped by air

Holley LS Engine Swap Accessory Drive Systems 20-140

Accessory Drive Systems, LS Engine Swap, Serpentine, Black Air Conditioning Pulley, Compressor, Tensioner, Chevrolet, Small Block LS, Kit

Part Number: HLY-20-140

Not Yet Reviewed

Estimated Ship Date: May 13, 2026 if ordered today

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Estimated Ship Date: May 13, 2026 if ordered today