47RE Sun Shell, used and ready to install. Fits the 47RE. Ships fast from the USA.
If you are searching for a 47RE sun shell, you probably have the case apart and are looking at a driving shell with cracked or hammered drive slots, or a sun gear with worn bushings that let the gearset wobble. This is a used Mopar sun gear driving shell from a Ram 2500/3500 Cummins A618, shown in the photo with the sun gear installed in the shell. The listing covers the 46RE, 47RE and 48RE family in 1998-2007 trucks. You get the item as pictured.
The main case of the 47RE is a Simpson gear train: front and rear planetary sets that share one sun gear. The sun gear is held in a stamped steel bell called the driving shell, retained by a thrust plate and snap rings. The front clutch drive lugs drop into the slots around the rim of the shell. When the front clutch applies, in third and in Reverse, it turns the shell and the sun gear with the input. In second, the front (kickdown) band clamps the front clutch retainer, which holds the shell and sun gear still so the front gearset can multiply torque. That means every second-gear launch and every 2-3 shift on a heavy diesel truck loads those slots, and a slipping kickdown band or a front clutch that drags and grabs hits the shell hard.
From the driver's seat a bad shell feels just like a slipping band or clutch, so do the road test and pressure checks first. A kickdown band that is out of adjustment, a bent band strut and a governor pressure problem all cause shift complaints on these trucks; our 47RE Ram 2500 shift problems guide and the 47RE valve body testing guide cover those checks. The shell itself is judged on the bench. The factory rule is to replace the driving shell if it is distorted, cracked or damaged in any way, and to replace the sun gear as an assembly if its teeth are chipped or its bushings are scored, because the bushings are not serviced separately.
Listed for the 46RE, 47RE and 48RE in 1998-2007 Dodge Ram 2500 and 3500 trucks with the 5.9L Cummins, under the A618 designation, which is also the listing reference. The RE gear train was revised over the years, so compare the drive slots, the sun gear spline and the tabbed washer slots with your old shell before you install it, or send us your year and VIN and we will check the match. More hard parts for this unit are on the 47RE parts page.
Since the shell sits between the two planetary sets, check them at the same time; we carry the 47RE rear planetary and ring gear and the 47RE front ring gear. A worn front clutch is what usually damages the shell, so the 47RE friction kit is a sensible add.
| Fits | 47RE |
| Part type | Sun Shell |
| Condition | Used |
| Brand | OEM |
| Reference | A618 |
| Ships | From the USA |
| Warranty | 1-year |
Doing this repair right usually means replacing these at the same time. Same transmission, ships together.
Yes. Chrysler calls it the sun gear driving shell. Parts catalogs also call it the sun shell or reaction shell. It holds the sun gear and is driven by the front clutch lugs.
The photo shows the shell with the sun gear installed. You receive the item as pictured. If you only need the shell, you can transfer your own good sun gear into it.
It is listed for 1998-2007 46RE, 47RE and 48RE units. For an earlier transmission, compare the sun gear spline and drive slots with your old shell or send us your year and VIN first.
Usually a slipping front clutch or a kickdown band out of adjustment, which lets the shell take shock loads on shifts. Fix the clutch and band at the same time or the new shell will fail too.
No. The factory manual says the sun gear bushings are not serviceable; replace the sun gear as an assembly if they are scored or worn.
