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Kit, Line Pressure, Booster, 45RFE, 545RFE, 65RFE, 68RFE, Dodge (99-UP)

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Electric Line Pressure Booster - Chrysler 45RFE/545RFE
Electric Line Pressure Booster - Chrysler 45RFE/545RFE45RFE Line Pressue Booster45RFE Electrical Line Pressure Booster
Price: $89.18
Part Number: TAT-S72741H-TS
15-30 PSI Increase over OE or Stock Pressure

*Pictured is the LB2 on the right with 3 black wires.  Also available on the site is the LB1 pictured left with 1 green wire and 2 black wires.

This family of transmissions uses a full range line pressure sensor mounted on the outside of the transmission for "closed loop" line pressure control. Due to this system, traditional methods of raising line pressure by changing the PR spring or valves have no effect. The Sonnax Line Pressure Booster alters the pressure signal sent to the computer causing the computer to raise line pressure. Part number 44957-LB1 (68RFE) has 10-15 psi increase, and 44957-LB2 (45/545RFE) has 15-30 psi increase. Higher line pressure increases clutch holding power and torque capacity but with these transmissions, the increase has a limited effect on shift feel. Changes in shift feel will be noticed mostly under aggressive driving or loaded conditions. This part is ideal for heavy duty and modified vehicles and even stock transmissions when a little extra pressure is desired. No other modifications are required. The Line Pressure Booster installs between the pressure sensor and vehicle harness using OEM style sealed connectors. Simply unplug the vehicle harness and reconnect with one of these parts.

Increased line pressure

Increased clutch clamping force and torque capacity

Installs on outside of transmission

Easy plug and play installation

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