Speedway Motors Mustang II Power Steering Flow Valve for GM Pump with 16mm O-Ring to 5/8” Inverted Flare Adapter, Reduces Fluid Flow to Improve Steering on Mustang II Rack Systems

Flow Valve It is common to use an early GM power steering pump with a Compatible with Mustang II power rack and pinion. Most who have tried it have found that the steering was twitchy or that it easily darts. This valve will replace the existing fitting in the back of the early GM power steering pump and reduces the fluid flow from three gallons-per-minute to two gallons-per-minute, which cures the problem. For applications using the O-ring style power steering hoses (use in conjunction with adapter insert # 910-32921 for inverted flare hose application). Installs in the back side of the pump (see above illustration pictures). If converting pump from modern 16mm o-ring to traditional 5/8" inverted flare style hoses and utilizing this pressure reducer adapter fitting, use this fitting in conjunction with the following adapter insert and order (1) Adapter Insert 910-32921. Fitting thread size Information: Pump Side: 3/4-16 Male (O-Ring Seal) Hose Side: 16mm-1.5 Female (O-Ring Seal) Inverted Flare If you have a power steering pump using late model style O-ring sealed hoses that you need to adapt to traditional inverted flare hoses, this inverted flare adapter is a simple fix. Simply insert the adapter into the flow control fitting and then install your inverted flare hose. Use to convert from 16mm o-ring to 5/8" inverted flare style.

• Corrects Oversensitive Steering – Designed to resolve twitchy or overly quick steering when using a GM Type I power steering pump with a Compatible with Mustang II power rack and pinion.
• Reduces Fluid Flow Output – Lowers pump flow from 3 GPM to 2 GPM, providing smoother and more controlled steering response in custom or retrofit applications.
• Adapter for Hose Conversion – Converts 16mm O-ring hose connections to traditional 5/8-inch inverted flare, simplifying integration with different hose styles.
• Compatible With O-Ring Style Systems – Intended for use with pumps and hoses utilizing O-ring seals; can be paired with the recommended adapter insert for expanded compatibility.
• Direct GM Pump Installation – Installs in the rear of early GM power steering pumps to regulate pressure and flow, improving drivability when combined with Compatible with Mustang II steering setups.