The Manley Valve - Exhaust, Valve-R/M 1.625,+.300 is a top-notch component designed for performance enthusiasts looking to enhance their engine's efficiency. This exhaust valve is engineered to fit a range of domestic vehicles, making it a versatile choice for various applications.
This exhaust valve is crafted for optimal performance, providing a reliable fit and enhancing exhaust flow. With its precise dimensions and robust construction, it ensures that your engine runs smoothly and efficiently. Whether you’re upgrading your existing setup or replacing worn-out parts, the Manley exhaust valve is an ideal choice for maintaining engine health.
This valve is designed with a universal fitment in mind, making it compatible with a variety of vehicles. However, it's always a good idea to double-check your specific vehicle's requirements to ensure a perfect match. Doing a bit of research can save you time and ensure that you get the right part for your engine.
Customers have praised the Manley 11333-8 exhaust valve for its durability and performance. Many have noted significant improvements in engine responsiveness and efficiency after installation. Here’s what some users have said:
The Manley Valve - Exhaust, Valve-R/M 1.625,+.300 is a fantastic addition for anyone serious about optimizing their vehicle's performance. With its high-quality construction and proven results, this valve is sure to meet your needs and exceed your expectations.
This product contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. For more information, please refer to the Prop 65 warning label.
⚠ 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.