Get a Boost with Sonnax Line Pressure Booster Kits
The larger boost valves and stronger PR springs in Sonnax booster kits raise line pressure the SMART way by controlling pressure increase progressively with the demand of driving conditions.
Simple, affordable, drop-in parts
require no special tools or reaming to install and offer big performance without a big price tag.Larger boost valves
are engineered for exceptional line rise precision, intelligently controlling low- and high-end line pressure increases.Springs are about 10% stronger than OE.
Unlike other, stronger aftermarket springs, Sonnax springs won't overload the pump at idle, produce harsh, low-speed shifts or engagements.
How Progressive Boost Works:
The combination of Sonnax booster kit valves and springs gives you the best of both worlds: a modest pressure increase at the low end, with a high-end pressure that is equal to or greater than that of other aftermarket kit springs.
The combination of boost valves and springs is the ONLY way to progressively increase line pressure.
Increasing Line Pressure in Chrysler's RFE Applications:
Sonnax electronic line pressure booster kits modify the sensor signal which causes the computer to create a pressure increase. The booster kits 44957-LB1 (10-15 psi increase) and 44957-LB2 (15-30 psi increase) are installed between the pressure sensor and vehicle harness using OE-style sealed connectors and do not require any modification or changes to the transmission. Simply unplug the vehicle harness and reconnect with one of these kits in line.
Sonnax Industries is an Employee-Owned Company
1 Automatic Drive · Bellows Falls, VT ·
05101-0440 · U.S.A.
800-843-2600 ·
802-463-9722