Sonnax 77898E-14K Boost Valve Kit 4L60E 4L65E 4L70E Late pump design, .421" dia Featured Products Combo kit fits all models

Combo kit fits all models 1993-2003

Allomatic filter (Deep-pan style)

fits all transmissions 1987-UP

Pin O-Rings (2) 1 extra

This pan features internal heat sinks and external cooling fins

Sonnax 77898E-14K Boost Valve Kit 4L60E 4L65E 4L70E Late pump design, .421" dia Featured Products Combo kit fits all modelsCountry Region of Manufacture: United States OE Spec or Performance Custom: Performance Custom Manufacturer Part Number: 77898E 14K Brand: Sonnax Manufacturer Warranty: No Warranty 4L60 E, 4L65 E, 4L70 E Boost Valve Kit Part No. 77898E 14K Late pump design, . 421" dia, O ring style with OE ratio GM 4L60 E, 4L65 E and 4L70 E transmissions frequently have poor line rise, which can result in 3 4 clutch, 2 4 band failure or poor shift quality. The duty