EXCELENT CONDITION 4L80E GM PUMP COMPLETE REMAN 1997-03 SONNAX VALVE KIT BOOST WITH O RINGS ZIP VALVE INSTALLED
COMES WITH: INNER AND OUTER GEARS, NEW Pump Body Bushing , Seal , Gasket , Pump Cover to Case , "O" Ring Front Pump , Sealing Rings (2) AND SONNAX VALVE KIT BOOST W/O RINGS , ALL THE VALVES ARE INCLUDED
Common problems in vehicles with GM 4L80-E and 4L85-E transmissions include uncontrollable line rise (upward of 500 psi), high line pressure in Reverse, broken direct clutch drums and/or broken cases. These problems can be caused by excessive EPC torque signal pressure. Sonnax self-regulating boost valve kit 34200-10K eliminates these problems by limiting EPC pressure.
- Hardened steel boost valve has an encapsulated relief valve that will allow EPC pressure to exhaust if it exceeds 95-105 psi
- Boost valve with over 20% wider spools to provide better durability and increased sealing contact area
- Boost valve spools have annular grooves to reduce side-loading that causes wear
- Closely toleranced sleeve restores the hydraulic integrity between the valve and sleeve
- O-Rings have been added to the sleeve to provide a positive seal that compensates for pump bore wear
- Drop-in Zip Valve™ parts install quickly and easily
THE PUMP SUPPORT IS MACHINE FACE CUT AND THE PUMP BODY SURFACE AND POCKET IS MACHINE TO OEM TOLERANCES OR BETTER
*YOU HAVE TO ALIGN THE PUMP HALVES BEFORE TORQUING THE FASTENERS TO SPECIFICATION
*THE PUMP WILL ONLY COME WITH THE PARTS LISTED IN THE DESCRIPTION
*WARRANTY DOES NOT COVER INPROPER INSTALATION OF PUMP OR TORQUE CONVERTER
Includes everything you see in the picture.
*Please do not purchase before you fully understand the compatibility, description, condition, warranty, and return policy of the item*
Please send a message if you have any questions.
BUYER PAYS RETURN SHIPPING
We also carry a complete line of hard parts for cars and trucks including Allison, used, rebuilt, and new!
***FOR ALASKA , HAWAII PUERTO RICO AND INTERNATIONAL PLEASE CONTACT US FOR A SHIPPING QUOTE ***