Manley Performance

Manley Chevy LS/LT1/LT4 Valve Spring Kit

$795.32

SKU: M004 26351048KS

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Description

Part #: 26351048KS

Manley Performance LS & LT NexTek valve spring kits take the guess work out of making your valvetrain race-ready. Engineered for maximum durability, stability, and precision in high-performance and racing applications, these chrome-silicon alloy springs provide exceptional fatigue resistance and high-tensile strength, ensuring consistent valve control at extreme RPMs. Save time and money with these all-inclusive kits, featuring premium springs, retainers, I.D. locators, locks, and Viton seals.

Features:

    • Manley LS and LT Valve Spring Kits provide a complete, engineered solution, ensuring seamless compatibility for higher-lift camshafts and eliminating concerns with mismatched components.
    • NexTek? Valve Springs are manufactured from "super clean" Hi-Tensile Chrome Silicon steel and shot-peened to MIL spec for maximum fatigue life. Spring No. 221435-16
    • 7? Steel Retainer CNC machined to exacting tolerances and made of thru-hardened 4140 chromoly. Retainer No. 23610-16 (+.050" Installed Height)
    • I.D. Valve Spring Locator is CNC machined, heat treated, and black oxide finished. Locator No. 42348-16 (.505" ID)
    • 7? Machined Valve Locks use the highest quality steel alloy and are heat treated and black oxide finished. For 8mm (.3135") valve stem. Lock No. 13098-16
    • Viton Valve Stem Seals offer exceptional resistance to heat, chemicals, and oils. Seal No. 24042-16
    • Note: Max. lift figures above may vary depending upon the cylinder head and installed height.

Max Lift: 0.700" - 7? Steel Retainer (+.050") - I.D. Spring Locator (.505") - 7? Machined Valve Lock - Viton Valve Stem Seals

This product may expose you to chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm.

Fitment

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Specifications

BrandManley Performance
Part NumberM004 26351048KS

Buy with Confidence

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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