45RFE Input Drum 1999, used and ready to install. Fits the 45RFE. Ships fast from the USA.
Stripped converter splines, a shaft that spins without moving the truck, or a rebuild that turned up a scored shaft: those are the reasons people search for a 45RFE input shaft. One thing to know up front. The product name says input drum, but what ships is a used genuine Chrysler input shaft, reference 4799537, a number Chrysler has since replaced with 5114582AA. The photo shows the bare splined shaft with its sealing ring grooves. If you need the drum that holds the clutches, see the retainer linked further down instead.
In the 45RFE and 545RFE the input shaft is the only path for engine torque into the geartrain. Its front splines ride in the torque converter turbine hub, and its rear end drives the input clutch retainer, the housing that carries the underdrive, overdrive and reverse clutch packs. The machined lands between the splines carry sealing rings that keep apply oil inside the shaft's circuits as it turns inside the pump's reaction shaft support. So the shaft has two jobs: carry torque, and hold oil pressure for the clutches it feeds.
Spline failure is usually found once the transmission is out, but you can narrow it down first. With fluid at the correct level, a complete loss of drive in every range, including reverse, points toward the input side rather than one clutch pack, because every gear in this unit begins at the input shaft. A slip limited to certain gears points more toward a clutch pack, seal ring or pressure issue. Our 45RFE 3-4 clutch failure guide covers the gear-by-gear clutch logic, and the pump failure guide explains no-drive problems caused by pressure loss rather than a broken part. On teardown, Chrysler's input shaft end play specification for the 45RFE/545RFE is 0.46-0.89 mm (0.018-0.035 in.), which is worth recording before disassembly.
This is the early number. The OEM catalog lists 4799537 for the 1999-2004 Grand Cherokee 4.7L, 2000-2004 Dakota 4.7L, 2000-2003 Durango 4.7L, 2002-2003 Ram 1500 with the 3.7L, 4.7L or 5.7L, the 2003 Ram 2500 and 3500 with the 5.7L, and the 2002-2004 Liberty 3.7L. The replacement number 5114582AA then carries on into later 45RFE and 545RFE applications. Because this is a used part and Chrysler made running changes over the years, compare the length, spline count and ring groove layout against your old shaft, or send us your year and VIN and we will check it before it ships. Every RFE part we carry is on the 45RFE and 545RFE collection page.
If the retainer is damaged too, pair this with the 45RFE input clutch retainer drum. Most shaft failures are found during a full overhaul, and the 1999-2005 master rebuild kit supplies the rings, seals and frictions to finish the job.
| Fits | 45RFE 1999 |
| Part type | Input Drum |
| Condition | Used |
| Brand | OEM |
| Reference | 4799537 |
| 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 input shaft. The product is filed as an input drum, but the part is a used genuine Chrysler input shaft, reference 4799537, replaced by Chrysler with 5114582AA. The clutch retainer drum is sold separately.
The OEM catalog lists it for the 1999-2004 Grand Cherokee 4.7L, 2000-2004 Dakota 4.7L, 2000-2003 Durango 4.7L, 2002-2003 Ram 1500 (3.7L, 4.7L, 5.7L), 2003 Ram 2500 and 3500 5.7L and 2002-2004 Liberty 3.7L. Send your year and VIN if you want us to confirm.
No, it is a used OEM shaft. Inspect the splines and ring lands when it arrives and compare it side by side with your original before installing.
New sealing rings at minimum. Check the converter hub splines and the input clutch retainer splines, since a worn mating part will strip a good shaft. If the unit is apart, a master rebuild kit covers the seals and frictions.
Mopar ATF+4. After clutch or seal work Chrysler calls for the Quick Learn procedure with a scan tool so the computer re-learns clutch volumes.
