68RFE Planetary 2013, used and ready to install. Fits the 68RFE. Ships fast from the USA.
If your 2010-2018 Ram 2500 or 3500 with the 6.7L Cummins backs up with a grind or howl, or the teardown turned up a reverse planet with damaged pinions, this is the replacement gearset. It is a used 68RFE reverse planetary gear set taken from a 2013 Ram diesel 68RFE that was parted out. It is in good used condition, and the photos show the exact assembly that ships, so you can compare it against the one on your bench before you order.
The 68RFE has no bands. It makes every gear by applying two clutches at a time across three simple planetary gearsets. In Reverse, ATSG's clutch chart shows the reverse clutch and the low/reverse clutch applied for a 4.44:1 ratio - deeper than first gear at 3.23:1. The reverse clutch is the one element in this transmission that no solenoid controls; it is applied by the manual valve and line pressure. The reverse gearset is the member that turns that clutch application into backward rotation of the output shaft, and it does it with six-pinion carriers that ATSG says Chrysler used in all three 68RFE gearsets to cope with diesel torque. Backing a loaded trailer up a ramp puts some of the highest torque this transmission ever sees through the reverse power path.
Most 68RFE reverse complaints are hydraulic, not mechanical: a leaking reverse circuit, a worn low/reverse switch valve bore, or burned reverse clutches. Rule those out first. A scan tool helps: log input and output shaft speed while backing at a steady crawl. With 200 rpm on the output, a healthy unit shows about 890 rpm input. A big mismatch with good pressure, plus steel debris, points at the hard parts. Make sure the speed sensors are reading correctly before you trust that math - our 68RFE speed sensor guide explains how a bad sensor fakes a ratio code. For the hydraulic side, the 68RFE valve body testing guide covers the low/reverse switch valve and circuit checks.
This gearset came out of a 2013 diesel 68RFE, so it is a match for the 2007.5-2018 Ram 2500, 3500 and cab chassis trucks with the 6.7L Cummins. The 68RFE saw several running changes, including a 2010 solenoid change and a larger update for 2019, so lay this part next to your original and compare the spline and tooth counts, the carrier, and the pinion layout before installing. If you are not sure, send us your year and VIN when you order. All other parts for this unit are in the 68RFE parts collection.
Clean the case and every bore before the new gearset goes in, because broken pinion material travels everywhere, including the cooler, which must be flushed or replaced. Inspect the reverse clutch hub splines and the input clutch housing that drives the reverse clutch, and set the selective thrust washers and bearings to spec. Replace worn thrust bearings rather than reusing them. A 68RFE clutch module is the right add-on when the reverse or low/reverse frictions show heat, and a 68RFE input drum replaces a housing with worn splines or cracked fingers. Fill with Mopar ATF+4 and set the level with the fluid at operating temperature. If the truck lost reverse because of shock loading, also check the output shaft and transfer case input for damage.
| Fits | 68RFE 2013 |
| Part type | Planetary |
| Condition | Used |
| Brand | OEM |
| Ships | From the USA |
| Warranty | 1-year |
Doing this repair right usually means replacing these at the same time. Same transmission, ships together.
It is the reverse planetary gear set, pulled from a 2013 Ram 68RFE with the 6.7L Cummins. If you need the reaction set, see our 2007 68RFE reaction planetary listing.
Yes, if the gearset is slipping or stripped, input and output speed no longer match the 4.44 reverse ratio and the TCM sets P0736. Slipping reverse or low/reverse clutches and bad speed sensors cause the same code more often, so test those first.
It came from a 2013 unit and suits the 2007.5-2018 Cummins 68RFE. Compare it to your original part, or send your VIN and we will confirm fitment.
Thrust bearings and washers that show wear, the filter, all seals and gaskets, and any reverse or low/reverse frictions that are burned. Flush the cooler too.
Mopar ATF+4. Set the level with the transmission at normal operating temperature.
