Manley 12331-1 Race Exhaust Valve 1.654" Triple Groove 6.4L HEMI

The Manley 12331-1 is a high-performance race exhaust valve engineered specifically for 2011 and newer Chrysler and Dodge 6.4L HEMI engines. Designed for serious racing applications, this valve features a 1.654-inch head diameter and Manley's triple groove stem design for enhanced valve stem sealing and improved heat dissipation.

Key Features:

• 1.654-inch valve head diameter for optimized exhaust flow
• Triple groove stem design improves valve seal retention and oil control
• Race-grade construction withstands extreme cylinder pressures and temperatures
• Precision-manufactured to OEM specifications with upgraded materials
• Direct replacement for 6.4L HEMI Apache engines (392 cubic inch)
• Compatible with 2011-2023 Dodge Challenger SRT, Charger SRT, and Chrysler 300 SRT models

Manley Performance valves are CNC-machined from high-strength stainless steel alloys and undergo rigorous quality control testing. The triple groove design allows for three valve locks instead of two, distributing load more evenly and reducing the risk of valve failure under high-RPM conditions. Ideal for naturally aspirated or forced induction racing builds requiring maximum durability and performance.