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Manley NexTek Forced-Induction Valve Springs Ford 4.6/5.4L SOHC 2V
$365.21
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Manley NexTek Forced-Induction Valve Springs for Ford 4.6/5.4L SOHC 2V

If you're looking to boost the performance of your Ford 4.6L or 5.4L SOHC 2V engine, the Manley NexTek Forced-Induction Valve Springs (Part Number: 221437-16) are an excellent choice. These valve springs are designed specifically for these Ford engines, ensuring a perfect fit and top-notch functionality.

Why Choose Manley NexTek Valve Springs?

Manley Performance has a reputation for excellence, and their NexTek valve spring technology is no exception. Crafted from "super clean" Hi-tensile strength chrome silicon steel alloy, these springs provide remarkable performance and long-lasting reliability. You can trust that these springs will stand up to the demands of forced induction setups, making them a smart investment for your engine.

Key Features

  • Outer Diameter: 1.030/1.175"
  • Inner Diameter: .642/.787"
  • Installed Pressure: 125 @ 1.680"
  • Open Pressure: 265 @ 1.130"
  • Max Lift: .580"
  • Coil Bind: 1.080
  • Spring Rate: 255 lbs/in

Benefits of Using Manley NexTek Valve Springs

With a proprietary multi-step heat treatment process and shot peening, these valve springs minimize load loss and enhance fatigue life. The use of computer-aided modeling for application-specific designs means that you’re getting the best possible springs tailored for your Ford engine. The incorporation of ovate wire and conical designs results in lighter, more reliable springs that outperform the competition.

Fitment Information

The 221437-16 valve springs are specifically engineered for the Ford 4.6L and 5.4L SOHC 2V engines. Whether you’re upgrading your engine for racing or just want to ensure it runs smoothly under increased pressure, these springs are an ideal choice.

Customer Reviews

Many users have praised the Manley NexTek valve springs for their durability and performance. Here’s what some customers are saying:

  • "These springs have made a noticeable difference in my engine's responsiveness. Highly recommend!"
  • "I installed these on my 5.4L and they fit perfectly. The quality is top-notch!"
  • "Great performance upgrade for my forced induction setup. Worth every penny!"

Upgrade your Ford engine with the Manley NexTek Forced-Induction Valve Springs and experience the difference in performance and reliability. Your engine deserves the best, and with these springs, you’ll be taking a significant step towards enhancing your driving experience.

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Vehicle Make/Model
Ford Crown Victoria 1998 S
Ford Crown Victoria 1998 Base
Ford Crown Victoria 1998 LX
Ford Crown Victoria 1998 Police Interceptor
Ford Explorer 1995 XL
Ford Explorer 1995 Eddie Bauer
Ford Explorer 1995 Sport
Ford Explorer 1995 Expedition
Ford Explorer 1995 Limited
Ford Explorer 1995 XLT
Ford F-150 1997, 2004 XLT
Ford F-150 1997 Base
Ford F-150 1997, 2004 XL
Ford F-150 1997, 2004 Lariat
Ford F-150 2004 STX
Ford F-150 2004 FX4
Ford F-150 2004 Flotillera
Ford F-150 Heritage 2004 XLT
Ford F-150 Heritage 2004 SVT Lightning
Ford F-150 Heritage 2004 XL

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How did Manley Performance Start?

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 Space

Led 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 Racing

If 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.

Due to the intended usage of the products sold by Manley Performance Products, Inc., they are sold WITHOUT WARRANTY OR ANY IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS FOR THE INTENDED PURPOSE. Manley Performance Products, Inc. shall not, under any circumstances, be liable for any special, consequential or incidental damages, including but not limited to loss of profits or revenue, loss of other property or equipment, cost of purchased or replacement of goods, or claims by customers of the purchaser, which may arise and/or result from the sale, installation or use of these parts. Installation of parts intended for “off-highway” use could adversely affect the vehicle manufacturer’s warranty coverage. Subject to applicable state law. Some items may not be legal for use in California on pollution controlled vehicles. All weights specified are approximate and subject to manufacturing tolerances. Manley Performance Products, Inc. reserves the right to make changes in design, specifications, materials, or make product changes without incurring liability or obligation with respect to similar product previously manufactured. If technical advice is offered or given in connection with the use of any Products it will be as an accommodation to Buyer and without charge and Seller shall have no responsibilities or liabilities whatsoever for the content or use of such advice.

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