Ferrea E11147 Titanium Valve Spring Retainers - Intake

The Ferrea E11147 Pro CNC Series Titanium Retainers are precision-engineered valvetrain components designed for high-performance Toyota B58 3.0L turbocharged engines. These retainers are CNC-machined from aerospace quality titanium, fully heat-treated and finished to exact tolerances, offering a 40% weight reduction over conventional steel retainers. This significant weight savings reduces valvetrain mass, allowing for higher RPM operation and improved engine response.

Key Features:

• Precision CNC-machined from aerospace-grade titanium alloy
• 40% lighter than conventional steel retainers for reduced valvetrain mass
• Fully heat-treated for maximum strength and durability
• Finished to exact tolerances for perfect fitment and reliability
• Designed specifically for intake valve applications on B58 engines
• Prevents valve float in high-RPM and high-performance applications

These titanium retainers are essential components for engine builders and enthusiasts upgrading their valvetrain system. When combined with upgraded valve springs, they provide superior valve control and stability even under extreme racing conditions. The reduced reciprocating mass allows the valvetrain to follow aggressive camshaft profiles more accurately, maximizing performance potential while maintaining reliability. Ideal for street performance, road racing, drag racing, and high-boost turbo applications.

Application Note: This retainer is designed for use with Ferrea valve springs on Toyota B58 engines (GR Supra A90, BMW B58 applications). Requires compatible Ferrea spring seat locators for proper installation.