A very popular upgrade for automatic transmissions is an upgraded line pressure boost valve and sleeve. The main boost valve in an automatic transmission controls the line pressure of the transmission, which in turn, affects how firm the transmission shifts and how firmly the clutches are held during operation. Increasing the line pressure can keep the transmission from burning up prematurely. This increase in life makes an upgraded boost valve relatively cheap insurance against costly repairs.

Sub Categories of Boost Valves

AMC
BMW
GEO
GMC
Kia