Sonnax 34910-03K Transmission Pressure Regulator Valve Kit TH400 3L80 71-98 Featured Products Servo Return Spring

Servo Return Spring

Tow&Go™ or competition

OE/OEM Part Number: 29545312

and Plymouth 604/41 TE

New matching spring reproduces OE function with the oversized valve

Sonnax 34910-03K Transmission Pressure Regulator Valve Kit TH400 3L80 71-98 Featured Products Servo Return SpringBrand: Sonnax Other Part Number: S34507PK Type: Pump Component Items Included: Pressure Regulator Manufacturer Part Number: 34910 03K Material: Steel Universal Fitment: Yes Vintage Part: No Performance Part: Yes 400, 425 Pressure Regulator Valve Kit Part No. 34910 03K Fits '71later units. High mileage vehicles with a GM 400 and 425 units often experience poor line pressure control due to a worn pressure regulator bore. This will result in high cooler