Upgrade your 2008-2010 Ford 6.4L Powerstroke diesel with the Swag Performance Parts 16-piece forged rocker arm valve bridge set, engineered to outperform the stock valve bridges and deliver serious durability for performance builds.
? Direct Replacement for OEM 8C3Z-6564-A
This set is a high-quality direct fit replacement for Ford OEM part number 8C3Z-6564-A, covering all 16 bridges required for a total valvetrain refresh.
? Forged 4140 Chromoly Steel — Built for Strength
Each bridge is precision forged from 4140 chromoly steel, offering exceptional tensile strength and fatigue resistance over cast or stamped stock pieces — ideal for trucks with increased power, tuning, or heavy duty use.
? Performance-Ready Construction
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Forged 4140 chromoly for maximum durability
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Precision machined for consistent fit and valve control
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Designed to resist flex and wear under increased valve train load
? Why Upgrade?
The stock rocker arm bridges are engineered for factory torque and power. When you push your 6.4L to higher performance levels — whether through tuning, turbo upgrades, or other mods — the stock components can become a weak link. High-strength forged bridges help maintain valvetrain geometry and support reliable operation under stress.
? Ideal For:
✔ High-performance diesel builds
✔ Heavy towing or sustained load conditions
✔ Replacing worn or fatigued OEM bridges
✔ Anyone seeking increased durability in the valvetrain
