Sonnax 34200-14K Lube Regulated Pressure Regulator Valve for 4L80-E 4L85-E Transmissions

The Sonnax 34200-14K lube regulated pressure regulator valve is a performance upgrade designed to address common overheating and idle surge issues in GM 4L80-E and 4L85-E automatic transmissions. This replacement valve solves problems caused by the original equipment design that restricts adequate cooler flow at low RPM and high-pressure conditions.

Key Features:

• Features an encapsulated check valve that allows regulated flow to the converter charge/lube circuit at vehicle idle
• Significantly increases cooler flow under low RPM and high-pressure conditions
• Prevents converter or pump drainback for improved reliability
• Improves converter release pressure for smoother operation
• Eliminates engine surge at idle in 1999 and later vehicles with high EPC pressure
• Eliminates the need for reprogramming in 1999-later vehicles

Application:

• Fits GM 4L80-E and 4L85-E automatic transmissions
• Direct replacement for OE pressure regulator valve
• Made from high-quality steel construction

This Sonnax pressure regulator valve is an essential upgrade for transmission rebuilders and performance enthusiasts looking to prevent overheating issues and improve transmission longevity. The improved design provides better lubrication flow where the OE valve falls short, particularly benefiting vehicles operating under demanding conditions.