It is common to use an early GM power steering pump with a 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 # 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 .

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1. For applications using the O-ring style power steering hoses. Installs in the back side of the pump (see above illustration pictures).
2. If converting the pump from modern 16mm O-ring to traditional 5/8" inverted flare style hoses and utilizing this pressure reducing flow valve, use this valve in conjunction with the adapter insert .