Chrysler 48RE Transmission Repair Manual. The 48RE four speed automatic transmission represents an evolution of the previous 47RE model and can be found mated to the Cummins Turbodiesel in Ram pickups from 2003 to 2007 model years. The transmission features a strength designation of “8” on a scale from 1 to 9. The 48RE is both heavier and stronger than the 47RE, although the two transmissions share identical ratios. Although the 48RE is considered a significant improvement over its predecessor, it quickly became dated as power ratings for the Cummins Turbodiesel surged to over 600 lb-ft by 2007, the last model year of the 5.9L Cummins ISB. Chrysler would ultimately replace the 48RE with its first diesel specific transmission platform, the 68RFE, following the introduction of the 6.7L Cummins.
Model Years/Applications: 2003 – 2007 Dodge Ram 2500/3500
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