Looking for a reliable exhaust valve that enhances your engine's performance? The Manley Exhaust Valve - 11397-1 is designed specifically for automotive enthusiasts who demand quality and precision. With a head diameter of 1.625 inches and an overall length of 5.540 inches, this valve is engineered to fit seamlessly into your vehicle's engine, ensuring optimal exhaust flow and efficiency.
This exhaust valve is not just about specifications; it’s about performance. Engineered for durability and efficiency, it helps improve exhaust flow, allowing your engine to breathe better and perform at its peak. Whether you're upgrading your vehicle or replacing an old valve, the Manley 11397-1 is a fantastic choice for enhancing your engine's capabilities.
Universal Fitment: While this valve is designed to fit a wide range of vehicles, it's always a good idea to double-check compatibility with your specific engine model. Doing a bit of research can ensure that this valve will work perfectly with your setup.
Customers have praised the Manley Exhaust Valve for its reliability and performance. Many users report improved throttle response and enhanced power delivery after installation. Here’s what some satisfied customers have said:
"The Manley valve fit perfectly and made a noticeable difference in my engine's performance!" - John D.
"Great quality and easy to install. Highly recommend for anyone looking to upgrade their exhaust system." - Sarah T.
In summary, the Manley Exhaust Valve - 11397-1 is a top-notch choice for anyone looking to enhance their vehicle's exhaust system. With its impressive specifications and positive customer feedback, you can trust that this valve will deliver the performance you’re seeking.
⚠ 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.