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Replacement Parts for HLY-300-123

Holley EFI LS Hi-Ram Intake Manifolds 300-123

4 out of 5 stars ( 5 )

Part Number: HLY-300-123

Estimated Ship Date: Monday 10/26/2026

$1,199.95

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Gaskets, Intake Manifold, O-ring Seals, Viton®, Stock Ports, 8-piece, Chevy, LS, 5.7L, 6.0L, Set

Part Number: HLY-508-23

4.86 out of 5 stars ( 7 )

Estimated Ship Date: Monday 10/26/2026 if shipped by air

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Estimated Ship Date: Monday 10/26/2026 if shipped by air

Gaskets, Plenum O-Ring Cord, 4.5 ft. Long, 3/32 in. Diameter, Hi-Ram, Chevy, LS, Each

Part Number: HLY-508-21

4.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 10/26/2026 if shipped by air

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Estimated Ship Date: Monday 10/26/2026 if shipped by air

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