CHEVROLET 5.3L/327 Holley Engines & Components

Accessory Drive Systems, Mid-Mount, Serpentine, A/C, P/S, LT1 Style Alternator/Water Pump, Belt, Hardware, Black, Chevrolet, Small Block Gen I, Kit

Part Number: HLY-20-240BK

4.63 out of 5 stars ( 16 )

Estimated Ship Date: Monday 3/16/2026 if shipped by air

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Accessory Drive Systems, Mid-Mount, Serpentine, A/C, P/S, LT1 Style Alternator/Water Pump, Belt, Hardware, Natural, Chevrolet, Small Block Gen I, Kit

Part Number: HLY-20-240

4.5 out of 5 stars ( 10 )

Estimated Ship Date: Monday 3/16/2026 if shipped by air

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Valve Covers, Track Series, Perimeter Bolt, Tall, Chevrolet Logo, Fabricated Aluminum, Polished, Baffled, Chevy, Gen I, 283-400ci, Pair

Part Number: HLY-241-287

4.64 out of 5 stars ( 11 )

Estimated Ship Date: Monday 3/16/2026 if shipped by air

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Timing Covers, 1-Piece, Aluminum, Natural, Chevrolet, Small Block, With Crank Sensor, Each

Part Number: HLY-21-152

4.46 out of 5 stars ( 26 )

Estimated Ship Date: Monday 3/16/2026 if shipped by air

Valve Covers, Muscle Series, Perimeter Bolt, Stock Height, Finned, Cast Aluminum, Polished Finish, Chevy, 4.3-6.6L, Pair

Part Number: HLY-241-137

4.13 out of 5 stars ( 16 )

Estimated Ship Date: Monday 3/16/2026 if shipped by air

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Timing Covers, 1-Piece, Aluminum, Holley Logo, Natural, Chevrolet, Small Block, Without Crank Sensor, Each

Part Number: HLY-21-150

4.13 out of 5 stars ( 16 )

Estimated Ship Date: Monday 3/16/2026 if shipped by air

Valve Covers, Muscle Series, Perimeter Bolt, Stock Height, Finned, Cast Aluminum, Natural Finish, Chevy, 4.3-6.6L, Pair

Part Number: HLY-241-134

4.7 out of 5 stars ( 10 )

Estimated Ship Date: Monday 3/16/2026 if shipped by air

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Valve Covers, Track Series, Perimeter Bolt, Chevrolet Logo, Fabricated Aluminum, Black Gloss, Baffled, Chevy, Gen I, 283-400ci, Pair

Part Number: HLY-241-288

Not Yet Reviewed

Estimated Ship Date: Monday 3/16/2026 if shipped by air

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Valve Covers, Vintage Series. Perimeter Bolt, Tall, Finned, Cast Aluminum, Back Finish, Chevy, 4.3-6.6L, Pair

Part Number: HLY-241-108

3.25 out of 5 stars ( 4 )

Estimated Ship Date: Monday 3/16/2026 if shipped by air

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Valve Covers, Vintage Series. Perimeter Bolt, Tall, Finned, Cast Aluminum, Orange Powdercoat, Chevy, 4.3-6.6L, Pair

Part Number: HLY-241-109

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Monday 3/16/2026 if shipped by air

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Timing Covers, 1-Piece, Aluminum, Black, Chevrolet, Small Block, Without Crank Sensor, Each

Part Number: HLY-21-151

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Monday 3/16/2026 if shipped by air

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Valve Covers, Sniper EFI, Fabricated, Aluminum, Short, Baffled, Black Gloss, 1.25 in. Breather Holes, Hardware, Chevy, Small Block, 283-400ci, Pair

Part Number: SNE-890010B

5.0 out of 5 stars ( 4 )

Estimated Ship Date: Monday 3/16/2026 if shipped by air

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Valve Covers, Sniper EFI, Fabricated, Aluminum, Short, Baffled, Silver Gloss, 1.25 in. Breather Holes, Hardware, Chevy, Small Block, 283-400ci, Pair

Part Number: SNE-890010

3.6 out of 5 stars ( 5 )

Estimated Ship Date: Monday 3/16/2026 if shipped by air

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Timing Covers, 1-Piece, Aluminum, Black, Chevrolet, Small Block, With Crank Sensor, Each

Part Number: HLY-21-153

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Monday 3/16/2026 if shipped by air

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Harmonic Balancer Bolts, Replacement, Steel, Black E-Coat, 7/16 in.-20 Thread, 2.8 in. Long, 12-Point Head, Washer included, Chevy, 4.6-6.6L, Each

Part Number: HLY-97-320

4.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 3/16/2026 if shipped by air

Valve Covers, Muscle Series, Perimeter Bolt, Stock Height, Finned, Cast Aluminum, Orange Painted, Chevy, 4.3-6.6L, Pair

Part Number: HLY-241-136

4.67 out of 5 stars ( 3 )

Estimated Ship Date: Monday 3/16/2026 if shipped by air

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Valve Covers, Vintage Series. Perimeter Bolt, Tall, Finned, Cast Aluminum, Natural Finish, Chevy, 4.3-6.6L, Pair

Part Number: HLY-241-106

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 3/16/2026 if shipped by air

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Valve Covers, Muscle Series, Perimeter Bolt, Stock Height, Finned, Cast Aluminum, Black Powdercoat, Chevy, 4.3-6.6L, Pair

Part Number: HLY-241-135

2.33 out of 5 stars ( 3 )

Estimated Ship Date: Monday 3/16/2026 if shipped by air

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Crankshaft Pulleys, Replacement, Serpentine Style, 7.88 in. OD, 6-Groove, Steel, Black, for Mid-Mount Accessory Drive Only, Chevy, 4.3-6.6L, Each

Part Number: HLY-97-317

Not Yet Reviewed

Estimated Ship Date: Monday 3/16/2026 if shipped by air

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Valve Covers, Vintage Series. Perimeter Bolt, Tall, Finned, Cast Aluminum, Polished Finish, Chevy, 4.3-6.6L, Pair

Part Number: HLY-241-107

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Monday 3/16/2026 if shipped by air

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Valve Covers, Muscle Series, Centerbolt, Chevrolet Logo, Cast Aluminum, Natural Finish, Baffled, Chevy, Gen I, 283-400ci, Pair

Part Number: HLY-241-290

3.0 out of 5 stars ( 2 )

Estimated Ship Date: Mar 30, 2026 if ordered today

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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 3/16/2026 if shipped by air