Made in USA. This power steering flow control valve for GM Saginawpower steering pumps reduces flow from 3.2 GPM to 2.1 GPM. A perfect partner for hydroboost applications, this 1" hex valve reduces the "twitchy" feel that sometimes occurs when a Ford rack and pinion is used with a GM power steering pump. Note when replacing your stock valve: this valve replaces OEM valves with 1" hex. Steel valve is coated with our proprietary Pure Stealth ceramic coating. While it is extremely durable, it is possible to scratch it. Care should be taken during installation to prevent damage.