The 48RE is Chrysler's 4-speed behind the 5.9 Cummins. The achilles heel is the TCC apply system and the governor pressure solenoid. Solve those two and the rebuild lasts.
Years
2003-2007
Fits
Dodge Ram 2500/3500 Cummins diesel
Parts In Stock
Full catalog at Gearbox Insider
Ship Time
Same-day before 2pm ET
Common 48RE Failures & Fixes
Use this as a starting point for diagnosis. Click through to the specific part once you've narrowed it down.
| Symptom | Most Likely Fix |
|---|---|
| No TCC apply | TCC solenoid and apply valve |
| Erratic shift points | governor pressure solenoid |
| Burnt OD clutch | OD clutch pack |
| Pump failure | pump rebuild kit |
What's In the 48RE Catalog
The full Sonnax-grade aftermarket and OE-equivalent catalog for the 48RE family is on Gearbox Insider. That's where the inventory lives, ships from, and updates in real-time.
- Master rebuild kits (gaskets, seals, friction modules)
- Valve body kits (Sonnax)
- Solenoid sets (shift, EPC, TCC)
- Speed sensors (ISS & OSS)
- Clutch packs & bands
- Pumps, drums, planets, sprags
- Pressure regulator & boost valve kits
- Bushings, bearings, thrust washers
Why Buy From Us
Spec parts
not "compatible"
not "compatible"
Ship before
2pm Eastern
2pm Eastern
Shipping
no minimum
no minimum
Built by & for
transmission pros
transmission pros
Related Guides
Diagnostic and rebuild guides for the 48RE on Gearbox Insider:
Need It Today?
Same-day ship before 2pm Eastern. Order now, on your bench tomorrow.
Order 48RE Parts