Sonnax Oversized Pressure Regulator Valve

The Sonnax Oversized Pressure Regulator Valve line is made for rebuilders who need to repair worn pressure regulator bores in automatic transmission valve bodies and pump covers. Pressure regulator valves move constantly, and that movement wears the bore over time. The wear lets line pressure leak to exhaust. Sonnax oversized valves restore tight valve-to-bore clearances so the pressure regulator can hold correct pressure again. They are also sold as oversized pressure regulator valve kits.

Key Features:

• Oversized design lets you recondition a worn bore and restore it to OE-like hydraulic integrity
• Hardcoat anodized aluminum valves resist premature wear
• Many designs have annular grooves that help center the valve in the bore and reduce side-load wear
• Helps correct erratic, high or low line pressure, harsh or soft shifts, poor torque converter clutch (TCC) apply, and clutch burn-out caused by bore wear
• Some kits add matched components such as sleeves, springs, boost valves or O-rings, depending on the application
• Installation uses Sonnax reaming or tooling kits and follows Sonnax instructions for each application

Sonnax is a well-known name in transmission aftermarket repair. It engineers its valve body and hydraulic circuit solutions to address common failure points, so rebuilders can fix the underlying wear instead of repeating a comeback repair.