Manley 42404-8 Valve Lash Caps, 0.080 in. Thick, 11/32 in. Valve Stems, Steel, Natural, Set of 8

• The ULTIMATE valve lock/wear cap assembly 
• Designed specifically for Fuel, Alcohol and Pro Mod Racers

First developed by our engineering team in the late 1990s for NASCAR applications, Manley’s LocCap system is designed to retain the wear cap on the tip of the valve by employing an external bead on the wear cap that—when the system is assembled—resides within an internal “retention channel” located on the I.D. of the valve locks. Manley’s valve train components group, headed by Manley GM Michael Tokarchik, refined the original designs combining a state-of the-art steel alloy and ultra-precise manufacturing techniques to achieve the goal of delivering a no-compromises valve lock/wear cap assembly for the supercharged classes

Manley’s LocCap systems are available in true 7° as well as 10° and Super 7° assemblies for 3/8”, 11/32”, and 5/16” stem valves in both Manley Bead Loc® and conventional square groove configurations. In addition, Manley’s LocCap system retrofits to competitors’ “Lash Keeper” assemblies, maintaining original valve spring installed height, valve overall length, valve tip length (0.250”), and retainer designs.

Both the LocCap valve locks and wear caps are precision machined using Manley’s TensileMax UHSS (ultra high strength steel). The wear caps are through-hardened to HRc 55 (harder than typical tool steel) to minimize wear due to aggressive rocker contact. Manley’s proprietary heat treatment processes minimize distortion, thereby improving the fit of the wear cap and valve locks to the valve stem.

Emissions Warning
Products sold on this website may not be legal for use on public roads or highways due to Environmental Protection Agency (EPA) restrictions or California Air Resources Board (CARB) emissions regulations. Federal and State regulations may restrict Product installation to pre-emissions regulation (Model Year 1974 or earlier) or to competition/racing vehicles used exclusively in
1) events organized by recognized bodies, authorizing permits for participating drivers.
2) racing event qualification, and 3) practice associated with events.
Installation of such products, including driving racing vehicles to and from the track, may be considered illegal “tampering” or as a “defeat device” and may result in federal and state penalties. It is the purchaser’s responsibility to ensure compliance with all applicable emissions laws, including California’s stricter standards.

Proposition 65 Warning:
This product may contain chemicals known to the state of California to cause cancer, birth defects, or other reproductive harm. For more information, visit www.P65Warnings.ca.gov.