CHEVROLET Manley Engines & Components

Valve, Race, NK-842 Stainless Steel, Intake, 2.165 in. Diameter, 4.900 in. Length, Each

Part Number: MAN-11620-1

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Valve, Race, XH-426 Stainless Steel, Exhaust, 1.590 in. Diameter, 4.923 in. Length, Each

Part Number: MAN-11621-1

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Valve Spring, Nex Tek, Dual, 1.335 in. Outside Diameter, 780 lbs/in., Each

Part Number: MAN-221422-1

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Valve Spring, Nex Tek, Dual, 1.324 in. Outside Diameter, 435 lbs/in., Each

Part Number: MAN-221421-1

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Valves, Intake, Stainless Steel, 2.205 in. Diameter, 0.313 in. Stem, 5.200 in. Length, Chevy, Set of 8

Part Number: MAN-11688-1

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Valve, Intake, Stainless Steel, 2.165 in. Diameter, .313 in. Stem, 4.900 in. Length, Each

Part Number: MAN-11686-1

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Estimated Ship Date: Mar 6, 2026 if ordered today

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Valves, Exhaust, Stainless Steel, 1.600 in. Diameter, .3136 in. Stem, 5.215 in. Length, Chevy, LS3, LS99, Each

Part Number: MAN-12353-1

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Estimated Ship Date: Mar 9, 2026 if ordered today

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Valve, Race, XH-426 Stainless Steel, Exhaust, 1.590 in. Diameter, 4.923 in. Length, Set of 8

Part Number: MAN-11661-1

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Estimated Ship Date: Mar 9, 2026 if ordered today

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SINGLE VALVE SPRING

Part Number: MAN-221435-1

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Estimated Ship Date: Mar 9, 2026 if ordered today

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Valve Springs, Single, 1.311 in. Outside Diameter, 353 lbs./in. Rate, 1.100 in. Coil Bind Height, Each

Part Number: MAN-221438-1

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Estimated Ship Date: Mar 9, 2026 if ordered today

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