Product Description
Michigan Motorsports 45RFE / 545RFE Transmission Line Pressure Booster Kit
Fits Dodge, Chrysler & Jeep Gas and Diesel with 45RFE / 545RFE | Plug-and-Play Line Pressure Upgrade
This Michigan Motorsports 45RFE / 545RFE Transmission Line Pressure Booster Kit is a simple, plug-and-play way to add performance and durability to your Dodge, Chrysler, or Jeep automatic transmission. By modifying the pressure signal sent to the TCM, this module safely raises line pressure 15–30 psi to increase clutch holding power and torque capacity. Ideal for tuned trucks, towing, heavy-duty use, or spirited driving, it installs externally on the transmission with no internal modifications required. Cross-references to Sonnax 44957-LB2 for 45RFE/545RFE applications.
Key Features
- Increased Line Pressure: Raises transmission line pressure approximately 15–30 psi, helping the 45RFE/545RFE handle higher torque loads and improved performance.
- Improved Clutch Holding Power: Higher clamping force on internal clutches reduces slip, enhances durability, and supports power-adders, towing, and heavy use.
- True Plug-and-Play Install: Installs on the outside of the transmission—no valve body removal or internal modifications required for most installations.
- Proven Design: Functionally cross-references to Sonnax 44957-LB2 (45/545RFE) line pressure booster for trusted operation and results enthusiasts expect.
- Performance-Oriented Use: Excellent for modified trucks and SUVs, off-road rigs, and work vehicles that demand firmer, more consistent shifting.
Key Fitments
- Engines: Compatible with both gas and diesel engines equipped with 45RFE or 545RFE automatic transmissions.
- Platforms: Fits most 1990s–2000s Dodge, Chrysler, and Jeep trucks, SUVs, and vans using the 45RFE / 545RFE units (including many Cummins-equipped models).
- Notes: For 45RFE and 545RFE transmissions only. External plug-and-play module; verify transmission model before purchase. Disclaimer: For off-road use only.
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Did the job
Does raise line pressure
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05 Dodge line pressure booster
I order this because it was cheaper than the sonnax one. It seems to be exactly the same for a much lower cost. Thanks Michigan Motorsports!
