Looking to boost the reliability and performance of your engine? The Manley 8mm Lash Caps (Part Number 42125-8) are designed to fit seamlessly into your vehicle's valve train, ensuring optimal function and longevity. With these lash caps, you can expect enhanced durability and reduced wear on your engine components.
These lash caps are engineered to provide a snug fit, which minimizes valve tip erosion and extends the life of your engine components. The high-quality 4140 alloy steel construction ensures that they can withstand the rigors of high-performance applications, making them a reliable choice for enthusiasts and professionals alike.
The 42125-8 lash caps are specifically tailored for various engine applications, ensuring compatibility and optimal performance. Their robust design and precise dimensions make them an essential addition to any valve train setup.
These lash caps are ideal for a range of vehicles that require 8mm valve stems, providing a perfect fit for many performance engines. Whether you're rebuilding your engine or upgrading components, the Manley 42125-8 lash caps will integrate seamlessly into your setup.
Customers have praised the Manley 8mm Lash Caps for their durability and performance. Many users report a noticeable improvement in valve train stability and reduced wear over time. Here’s what some customers are saying:
Investing in Manley 8mm Lash Caps (42125-8) means choosing a product known for quality and performance. Upgrade your engine's components today and experience the difference!
⚠ WARNING:
Cancer and Reproductive Harm
https://www.P65Warnings.ca.gov

Manley Performance, formerly called Manley Speed Equipment, was established in 1966 by Hank Manley shortly after his graduation from Brown University. His interest in the performance and racing traced back to 1960 when, at age 17, he rebuilt a 312 CID Ford V8 engine, installed a camshaft and three two-barrel carbs, and raced a ’56 Thunderbird on New Jersey’s streets. Initially, the company’s product lineup included stainless valves, lifters, camshafts, forged pistons, vanadium valve springs, pushrods, and timing chain kits. By 1998, Manley had outgrown its first Bloomfield, New Jersey facility and bought several acres in Lakewood, New Jersey. It was around this time that the brand’s name formally changed to Manley Performance. Nearly a decade later, the production space doubled in size.
Evolving in the Automotive SpaceLed by GM Michael Tokarchik in 2002, Manley entered the high-performance passenger car market as an OEM supplier of connecting rods for the 2003/2004 Ford SVT Mustang Cobra. Production reached 2500 rods per week without missing a single delivery date. Ford awarded Manley its highest ever supplier rating. Manley’s presence in the OEM market continued from there as a supplier for the Ford GT. After nearly 50 years since its inception, Manley continues to be globally recognized as the leading manufacturer of performance valves, connecting rods, cylinder head components, pushrods, drive and oil systems, and several other engine parts.
What is Manley’s Specialty?Manley Performance specializes in high-performance engine internals that range from stock replacements to full-on race applications. They have been the standard of the industry since their inception; a fact that still remains true now as they have ventured into new markets. Today, Manley Performance continues to re-define itself in a high-performance aftermarket industry that is constantly evolving. The brand has developed a wide range of new products for growing markets that include sport compact, Ford modular, and Chevy LS. Manley also maintains its leadership role with the traditional V8 engine business.
Get Manley Performance at Vivid RacingIf you are in need of a serious upgrade to your engine, then Manley Performance parts should be on your list. Like all of our suggested manufacturers, Manley uses the best materials available to ensure a quality part for your engine. We carry Manley connecting rods, crankshafts, pistons, and valve components. The large lineup of domestic parts includes sport compact vehicles, Ford modular engines, GM’s LS series internals, and HEMI product upgrades for Chrysler.
If you can’t find what you’re looking for or need help choosing the right part for your car, call our sales team at (480) 966-3040. We are here to make your buying experience a breeze.