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The Ferrea dual valve spring set for Mitsubishi 4G63/4G63T engines is rated at 254 lbs/in and supplied as a 16-piece kit. These springs are tailored for that engine family to deliver the specified seat and open rates in dual-spring valvetrain configurations, working with inner springs and retainers to maintain consistent valve control. Sold as a matched set for full valvetrain service.
Ferrea Mitsubishi 4G63/4G63T 254lbs Rate Inch Dual Valve Spring - Set of 16
