Constant movement of the converter regulator valve wears the pump body bore in Ford 4F50N, AX4N, AX4S and AXODE transmissions. A worn bore causes high or low converter apply pressures depending on area and extent of wear. The most common is wear at the balance end, causing high converter pressure and internal converter damage. Severe wear in other areas of the bore allows large amount of converter oil to leak to exhaust, lowering converter and converter apply pressure and cooler/lube flow. Sonnax oversized converter regulator valve kit 96201-23K corrects these problems by resizing the pump body bore and restoring circuit integrity.

• Replaces both the original 4-spooled converter regulator valve and the original 2-spooled version
• Hardcoat anodized aluminum valve combats premature wear
• Annular grooves help center the valve in bore to reduce future side-load wear
• Two replacement springs are included to compensate for the oversized valve, to reduce the excessive spring force that accelerates bore wear and to work with either the original 2- or 4-spooled OE design
• Either 96201-TL3 or F-96201-TL23 can be used to enlarge the bore to accept the oversized valves, for all applications.