Manley Intake Valves for Mopar 5.7L Hemi R/F 2.020in
If you're looking to boost your Mopar 5.7L Hemi’s performance, the Manley Intake Valves 11666-8 are a fantastic choice. Designed specifically for the Chrysler Hemi engines, these valves provide the perfect combination of durability and efficiency, making them ideal for both street and race applications.
Key Features
- Race Flo and Race Master Valves: Engineered for optimal airflow, these valves are perfect for high-performance setups.
- NK-842 Stainless Intake Material: This high-quality material ensures longevity and resistance to wear, even under extreme conditions.
- Chrome Stems and Hard Tips: The chrome finish not only enhances durability but also prevents corrosion, ensuring your valves perform at their best.
- Swirl Polished and Fully Machined: This meticulous machining process improves flow characteristics, giving your engine the edge it needs.
- Compatible with Chrysler Hemi 5.7L: Specifically designed for the 5.7L Hemi engine, featuring a triple groove for secure seating.
Specifications
- Part Number: 11666-8
- Diameter: 2.020 inches
- Material: NK-842 Stainless Steel
- Groove Type: Triple Groove
Fitment Information
The Manley Intake Valves are tailored for the Chrysler Hemi 5.7L engines, ensuring a perfect fit and optimal performance. Whether you're upgrading for better street performance or preparing for a race, these valves will meet your needs and exceed your expectations.
Customer Feedback
Users have praised the Manley Intake Valves for their excellent build quality and noticeable improvements in engine response. Many have reported smoother acceleration and enhanced power delivery, making these valves a popular choice among car enthusiasts and racers alike.
Why Choose Manley?
Manley Performance has a long-standing reputation for producing high-quality engine components. With the 11666-8 intake valves, you’re investing in a product that is designed to withstand the rigors of performance driving while providing reliable and consistent results.
Upgrade your Mopar 5.7L Hemi with the Manley Intake Valves 11666-8 and experience the difference that precision engineering can make!
⚠ 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.
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