Breakdown of Included Items

Sonnax 8L90SHIFTZIP Shift Zip Kit Features:

• Seals Critical Pressure Losses
• Eliminates oil pressure loss caused by worn components in critical oil circuits
• Prevents burnt clutches, delayed engagement, 3-4 bumps, inadequate lubrication, low pressure, and soft shifts 
• Removes torque converter clutch (TCC) trouble codes
• Does not require reaming or special tools for installation

Note: Later design valve bodies have updated the S4 valve to a single .531 in. diameter size. Sonnax clutch control valve included in this kit cannot be used in this location or shift complaints will occur.