Sonnax 77898E-14K Boost Valve Kit 4L60E 4L65E 4L70E Late pump design, .421" dia release and apply

release and apply

Steel Clutch Plate Set

Combine with Sonnax line pressure booster kit RFE-LB1 for even higher levels of performance

Type: Pump Stator Shaft

the R code servo has remained the trick piece for C6 builders needing additional band apply force

Sonnax 77898E-14K Boost Valve Kit 4L60E 4L65E 4L70E Late pump design, .421" dia release and applyCountry 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