Cylinder Heads For Air Oil Cooled18-22 Softail And 17-22 CVO Models Screamin Eagle

The Screamin’ Eagle cylinder heads for air/oil-cooled Milwaukee-Eight engines are high-performance components engineered by Screamin’ Eagle for modern Harley-Davidson motorcycles. These heads are designed specifically for **2018–2022 Harley-Davidson Softail models and 2017–2022 Harley-Davidson CVO models equipped with the air/oil-cooled Milwaukee-Eight engine platform. Built as part of Harley-Davidson’s factory performance upgrade program, these cylinder heads significantly enhance airflow, combustion efficiency, and overall engine output.

Cylinder Heads For Air Oil Cooled18-22 Softail And 17-22 CVO Models Screamin Eagle High-Performance Design

The cylinder heads are engineered as part of the Milwaukee-Eight Stage IV performance system, one of the most powerful factory upgrade packages available for Harley-Davidson engines. They are CNC-ported to improve the flow of air and fuel into the combustion chamber while also allowing exhaust gases to exit more efficiently. Extensive computer simulations and flow-bench testing were used during development to maximize airflow velocity through both intake and exhaust ports. (Harley-Davidson)

The CNC machining process ensures that every port and chamber is shaped with extreme precision. This creates a smoother path for the air-fuel mixture, improving cylinder filling and allowing the engine to generate stronger combustion. As a result, riders experience greater horsepower, increased torque, and faster throttle response compared with stock cylinder heads. Cylinder Heads For Air Oil Cooled18-22 Softail And 17-22 CVO Models Screamin Eagle

Larger Performance Valves

One of the key upgrades found in these Screamin’ Eagle heads is the use of larger valves compared with standard factory heads. These performance heads feature 40 mm intake valves and 32 mm exhaust valves, allowing a greater volume of air and fuel to enter the combustion chamber while improving the evacuation of exhaust gases. (Harley-Davidson) Cylinder Heads For Air Oil Cooled18-22 Softail And 17-22 CVO Models Screamin Eagle

The larger valves work together with the CNC-machined ports to improve engine breathing at both low and high RPM ranges. This improved airflow increases combustion efficiency, allowing the engine to deliver stronger performance throughout the entire powerband.

High-Performance Valve Springs

The heads also include heavy-duty performance valve springs designed to operate reliably with high-lift camshafts and higher engine speeds. These upgraded springs help prevent valve float during aggressive acceleration and high-RPM operation. (Harley-Davidson) Cylinder Heads For Air Oil Cooled18-22 Softail And 17-22 CVO Models Screamin Eagle

When paired with performance camshafts and larger throttle bodies, these cylinder heads allow the engine to reach its full potential. Many riders install them as part of a complete Stage IV engine build that includes cams, high-flow injectors, and upgraded intake components.

Designed for Air/Oil-Cooled Milwaukee-Eight Engines

These Screamin’ Eagle heads are specifically designed for air/oil-cooled Milwaukee-Eight 114 and 117 cubic-inch engines found in many Softail and CVO motorcycles. They are not compatible with the center-cooled versions of the engine, which use liquid cooling in the cylinder heads. (Harley-Davidson)

The air/oil-cooled configuration relies on a combination of airflow and oil circulation to maintain proper engine temperatures. The aluminum construction of the cylinder heads helps dissipate heat efficiently, ensuring stable performance during long rides or high-load conditions. Cylinder Heads For Air Oil Cooled18-22 Softail And 17-22 CVO Models Screamin Eagle

Compatibility and Fitment

These cylinder heads are designed to fit:

• 2018–2022 Softail models with Milwaukee-Eight engines
• 2017–2022 CVO motorcycles equipped with Milwaukee-Eight 114 or 117 engines
• Engines using the Screamin’ Eagle Stage IV performance upgrade kit

They are typically sold as a matched pair including both front and rear cylinder heads, ensuring balanced airflow and consistent engine performance. (Harley-Davidson)

For proper operation, installation requires an ECM calibration using the Screamin’ Eagle Pro Street Tuner, which adjusts fuel delivery and ignition timing to match the upgraded airflow characteristics of the engine. (Harley-Davidson)

Improved Power and Torque

When installed as part of a complete performance build, these cylinder heads contribute to substantial gains in engine output. Upgraded airflow and improved combustion allow the engine to produce stronger acceleration and increased rear-wheel torque compared with stock configurations. (Harley-Davidson)

Riders often notice quicker throttle response and a broader torque curve, which is especially beneficial for heavy cruiser motorcycles that rely on strong low- and mid-range power. Cylinder Heads For Air Oil Cooled18-22 Softail And 17-22 CVO Models Screamin Eagle

Durable Construction

Like most Harley-Davidson cylinder heads, Screamin’ Eagle versions are constructed from high-quality aluminum alloy. This material offers an excellent balance of strength, weight savings, and heat dissipation. The heads often feature a black finish with machined highlights, giving them a distinctive performance appearance that complements modern Milwaukee-Eight engines.

Performance Upgrade for Custom Builds

Because of their advanced airflow design and factory engineering, these Screamin’ Eagle cylinder heads are widely used by riders building high-performance Softail and CVO motorcycles. They are especially popular among enthusiasts who want to push their Milwaukee-Eight engines beyond stock power levels while maintaining OEM reliability. Cylinder Heads For Air Oil Cooled18-22 Softail And 17-22 CVO Models Screamin Eagle

Summary

The Screamin’ Eagle CNC-ported cylinder heads for air/oil-cooled Milwaukee-Eight engines are premium performance components designed for modern Harley-Davidson motorcycles. With precision CNC machining, larger valves, upgraded valve springs, and improved airflow design, they provide significant gains in horsepower, torque, and engine efficiency. Compatible with 2018–2022 Softail models and 2017–2022 CVO motorcycles, these cylinder heads remain a top choice for riders seeking factory-engineered performance upgrades for their Harley-Davidson engines. (Harley-Davidson) Cylinder Heads For Air Oil Cooled18-22 Softail And 17-22 CVO Models Screamin Eagle