Collapsible content

Caution - Please Read

Remember, transmissions have variations based on year, make, model and engine size, as well as for 2WD, AWD, 4x4, gas, diesel or hybrid and in some situations half years.  We encourage you to chat or call toll free with one of our knowledgeable staff members that will assist you in finding the correct part the first time and answer any questions you may have regarding parts for your build. Our goal simply put, is to get you moving with one order.

(877) 782-558

sales@ptptrans.com

Skip to product information
1 of 2

Sonnax

45RFE 5-45RFE 68RFE Transmission Sonnax Line Pressure Booster Kit RFE-LB1

Regular price $69.95 USD
Regular price Sale price $69.95 USD
Sale Sold out
Shipping calculated at checkout.
img{max-width:100%}45RFE 5-45RFE Sonnax Line Pressure Booster Kit RFE-LB1Features:Pressure Regulator SpringWiring Harness with ConnectorsInstallation InstructionsDescription: RFE transmissions have a unique, full range pressure transducer and real time adaptive closed loop pressure control system. Because of this, it is not possible to raise pressure in an RFE the same way you would in other transmissions. The typical method of installing a stronger pressure regulator spring or larger boost valve will not work because the RFE control module will simply adapt and return pressure to OE specification. An electrical booster option is the only way to raise pressure on an RFE.This kit is an improved design over a simple resistor circuit. Featuring an integrated chip (IC) circuit and a stronger pressure regulator spring, this new kit delivers 10 psi increase at lower pressure and 25 psi increase at higher pressure ranges. Only Sonnax line pressure booster kits provide progressive pressure increase which gives you smooth engagements and lower load on the pump at idle, but a greater increase in pressure as the transmission works harder.¬†This kit is ideal for heavy duty and modified vehicles and even stock transmissions when a little extra pressure is desired.Achieve shorter shifts and increased torque capacity without creating low speed harshnessImproved clutch holding capacity for increased durabilityProgressive pressure increase as driving conditions become more demandingOne kit fits both gas and diesel applicationsAlso works for 68RFE, 65RFE, and 66RFE applications¬†APPLICATIONSDodge Dakota, Durango 2000-2006 V8 4.7LRam 1500 2002-2006 V6 3.7L V8 4.7L 5.7LRam 2500 ST/SLT 2004-2006 V6 3.7LRam 2500 ST/SLT 2004-2011 V8 4.7L 5.7LRam 3500 ST/SLT 2004-2007 V8 4.7L 5.7LRam 3500 ST/SLT 2004-2006 V6 3.7LJeep Grand Cherokee, Laredo 1999-2000 V8 4.7LLiberty 2002-2004 V6 3.7L¬†Parts ship daily from our distribution center.FREE SHIPPING on US OrdersGOT QUESTIONS on your specific Year/Make/Model?Send us a message √ā¬ŅHabla espa√ɬĪol? Escr√ɬ≠banos con el a√ɬĪo, la marca, y el modelo de su veh√ɬ≠culo. This item is packaged for Wholesale Distribution¬†WARRANTY requests need to be accompanied with the appropriate codeas diagnosed by a professional transmission shop.Vehicles must be professionally diagnosed for solenoid failure prior to purchase.We cannot guarantee any one item will fix all transmission problems.Solenoid failure is often accompanied by additional failures;for example valve body failures, internal wear or damaged hard partsVisit¬†our eBay Store: Phoenix Transmission Partsfor all of your Automatic Transmission Part needsCheck out my other items!Be sure to add me to your favorites list!