USE COUPON CODE "SUMMER26"
Part #: 12333B-8
The Manley Performance Race Master Exhaust Valve Set is engineered specifically for the Chrysler 6.4L 392 HEMI engines from 2012 to 2014. Designed to meet the demanding conditions of high-performance racing environments, these valves provide exceptional durability and reliability for engines operating at high RPMs up to 8000. Whether you are building a competitive bracket racer, drag car, or oval track machine, these exhaust valves deliver the strength and precision necessary to maximize exhaust flow and maintain engine efficiency under extreme conditions.
Built for racers and performance enthusiasts alike, the Race Master valves help ensure consistent valve stability and longevity, allowing your engine to sustain peak power output and reliability during intense track sessions.
Manley’s Race Master exhaust valves incorporate advanced engineering and premium materials to meet rigorous racing standards. Key features include:
Manley Race Master exhaust valves are crafted from premium-grade alloys selected for their superior strength and heat resistance. Each valve undergoes meticulous machining and stringent quality control to maintain precise tolerances and smooth surface finishes. This attention to detail promotes optimal valve seat sealing and extends component life under extreme operating conditions.
The 1.675-inch valve head diameter is specifically matched to the Chrysler 6.4L 392 HEMI cylinder heads, ensuring proper valve seat contact and combustion chamber sealing. This precision fitment helps maintain engine efficiency and power output while minimizing the risk of valve failure during high-RPM operation.
This set of exhaust valves is a direct replacement for the 2012–2014 Chrysler 6.4L 392 HEMI engines and requires no modifications. They are designed to work with factory valve guides and seats, simplifying installation for experienced engine builders and machinists. No cutting, drilling, or special tuning is necessary when installing these valves. Professional installation is recommended to ensure proper valve seating and optimal engine assembly.
This exhaust valve set is ideal for:
Manley Performance manufactures high-strength engine internals for serious builds—especially forged pistons, connecting rods, valves, and valvetrain components developed for racing and high-output street applications. If you’re building for boost, high compression, or sustained RPM, Manley is a common choice for parts engineered to take abuse and keep power reliable.
ETA stands for Estimated Time of Arrival. The date shown is calculated using our Available-to-Promise (ATP) system, which tracks real-time supplier commitments to determine when a product is expected to be available for delivery. Specifically, the date is calculated by adding 9 business days from the date a supplier has committed to ship the product, representing a worst-case scenario for when we can expect to receive inventory.
Please note: The ETA is an estimate, not a guarantee. While we work closely with our suppliers to keep dates as accurate as possible, delays due to shipping carriers, weather, customs, or supplier-side issues may occasionally push the actual arrival beyond the date shown. Likewise, inventory may arrive sooner than the ETA in many cases. If you would like to be notified for when this item arrives, sign up for our back in stock notifications!
12333B-8 Manley Performance 12-14 Chrysler 300 6.4L 392 Race Master 1.675" Bead Loc Groove Exhaust Valve Set. Manley Performance Race Master Exhaust Valves deliver exceptional durability and precision for high-performance Chrysler 6.4L HEMI engines. Designed for racing up to 8000 RPM, these valves enhance exhaust flow and reduce valve seat wear. Crafted from premium alloys, they ensure reliable sealing and longevity under extreme conditions. Ideal for bracket, drag, and oval track racing, this set of 8 valves supports complete cylinder bank rebuilds with direct fitment for easy installation.
FLAT RATE SHIPPING
MADE IN THE USA
Adding product to your cart
Part #: 12333B-8
The Manley Performance Race Master Exhaust Valve Set is engineered specifically for the Chrysler 6.4L 392 HEMI engines from 2012 to 2014. Designed to meet the demanding conditions of high-performance racing environments, these valves provide exceptional durability and reliability for engines operating at high RPMs up to 8000. Whether you are building a competitive bracket racer, drag car, or oval track machine, these exhaust valves deliver the strength and precision necessary to maximize exhaust flow and maintain engine efficiency under extreme conditions.
Built for racers and performance enthusiasts alike, the Race Master valves help ensure consistent valve stability and longevity, allowing your engine to sustain peak power output and reliability during intense track sessions.
Manley’s Race Master exhaust valves incorporate advanced engineering and premium materials to meet rigorous racing standards. Key features include:
Manley Race Master exhaust valves are crafted from premium-grade alloys selected for their superior strength and heat resistance. Each valve undergoes meticulous machining and stringent quality control to maintain precise tolerances and smooth surface finishes. This attention to detail promotes optimal valve seat sealing and extends component life under extreme operating conditions.
The 1.675-inch valve head diameter is specifically matched to the Chrysler 6.4L 392 HEMI cylinder heads, ensuring proper valve seat contact and combustion chamber sealing. This precision fitment helps maintain engine efficiency and power output while minimizing the risk of valve failure during high-RPM operation.
This set of exhaust valves is a direct replacement for the 2012–2014 Chrysler 6.4L 392 HEMI engines and requires no modifications. They are designed to work with factory valve guides and seats, simplifying installation for experienced engine builders and machinists. No cutting, drilling, or special tuning is necessary when installing these valves. Professional installation is recommended to ensure proper valve seating and optimal engine assembly.
This exhaust valve set is ideal for:
Manley Performance manufactures high-strength engine internals for serious builds—especially forged pistons, connecting rods, valves, and valvetrain components developed for racing and high-output street applications. If you’re building for boost, high compression, or sustained RPM, Manley is a common choice for parts engineered to take abuse and keep power reliable.
Free Standard Shipping on orders over $300. Select “Free Shipping” at checkout. *Exclusions apply on oversized and freight items.
Need to return an item? We make it easy. Email us and we'll send you a free return label with instructions on how to return.
Free Standard Shipping on orders over $300. Select “Free Shipping” at checkout. *Exclusions apply on oversized and freight items.
Need to return an item? We make it easy. Email us and we'll send you a free return label with instructions on how to return.
