Sonnax K77898 Transmission Reverse Boost Valve Kit (Large Ratio, O-Ring Style) Featured Products Includes everything pictured (cool box

Includes everything pictured (cool box too

6R80 transmissions include torque converter clutch slip

Seal Large

035" Thick

with Inner and Outer Races

Sonnax K77898 Transmission Reverse Boost Valve Kit (Large Ratio, O-Ring Style) Featured Products Includes everything pictured (cool boxBrand: Sonnax Other Part Number: S74507RDK Type: Pump Component Items Included: Reverse Boost Valve and Sleeve with O Rings Manufacturer Part Number: K77898 Material: Steel Universal Fitment: Yes Vintage Part: No Performance Part: Yes 200 4R, 4L60, 700R4 Reverse Boost Valve Kit Part No. K77898 Large Ratio, O Ring Style Vehicles with GM 200 4R and 4L60 transmissions often have problems with poor Reverse boost or upshifts in manual low. These are