Manley 11608-8 Race Flo Intake Valves GM Duramax 6.6L Diesel 1.338" Head

The Manley 11608-8 Race Flo intake valve set delivers high-performance reliability for GM Duramax 6.6L diesel engines. Designed for bracket racing, oval track competition, and high-performance street applications, these precision-engineered valves provide the quality and durability that Manley Performance is known for.

Key Features:

• 1.338" head diameter with 0.274" stem diameter
• Stock height design for direct replacement applications
• Constructed from high-quality stainless steel for superior strength and corrosion resistance
• Chrome stems and hardened valve tips for extended service life
• Swirl polished and fully machined for optimal flow characteristics
• 0.050" margin width and 0.085" seat width for proper sealing
• 4.985" overall length with flat face top design

Manley's Race Flo series represents decades of racing experience and engineering excellence, providing performance enthusiasts with competition-grade components at competitive prices. These intake valves meet the demanding requirements of both racing and performance street engines while maintaining the strict quality standards Manley has upheld since 1966.