09D Sun Shell 2002, used and ready to install. Fits the 09D. Ships fast from the USA.
Looking for a 09D sun shell because your VW Touareg, Porsche Cayenne or Audi Q7 slips or flares pulling away in Drive, or because the rear gearset came out of the case in pieces? This listing is the 09D (Aisin TR-60SN) rear planet kit with sprag, identified by its 33-tooth shell and 27-tooth input sun gear, interchange reference 235584K. It is a used original part, cleaned and checked, for 2002-up units.
The 09D is the rear-drive version of the Aisin six-speed family and uses the same clutch elements as the front-drive 09G: clutches K1, K2 and K3, brakes B1 and B2, and one one-way clutch, F1. Power comes through a simple planetary at the front into a compound rear gearset, and the rear planet assembly is where the sun gears, shell and carrier combine those inputs into six forward ratios and reverse. The sprag is the one-way clutch. In Drive first gear, Sonnax's application chart shows only K1 and F1 applied, so the sprag alone holds the gearset against the case when you pull away. When it slips, first gear goes with it.
Slip in first is not always the sprag. The 09D has pressure taps for every clutch, so a pressure check tells you whether K1 is getting full apply pressure before you blame hard parts; our pressure testing guide walks through it. Worn clutch control valve bores in the valve body also cause flares and are covered in Aisin slipping under load. If pressure is good and the slip is only in first, or the case is already open and the sprag freewheels in both directions or the sun gear splines are rounded, this is the assembly you need.
The kit is cataloged for 2002-up 09D/TR-60SN units in the Audi Q7, Porsche Cayenne and Volkswagen Touareg, and for related Aisin versions in some Toyota models sold outside the U.S. Aisin used more than one shell and sun gear version in this family, so count the teeth on your old shell (33) and input sun gear (27) and compare the photos before ordering. If you are unsure, send your year and VIN and we will check it. All 09D parts we carry are on the Aisin transmission parts page.
| Fits | 09D 2002 |
| Part type | Sun Shell |
| Condition | Used |
| Brand | OEM |
| Ships | From the USA |
| Warranty | 1-year |
No. It is cataloged as the 09D rear planet kit with sprag, identified by a 33-tooth shell and a 27-tooth input sun gear, reference 235584K. Check the photos to see exactly what is included.
2002-up 09D (TR-60SN) transmissions in the VW Touareg, Porsche Cayenne and Audi Q7, plus related Aisin units in some overseas Toyota models. Match tooth counts or send us your year and VIN.
The vehicle slips, flares or feels like neutral pulling away in Drive first, while the other gears feel normal, because first gear in Drive relies on the one-way clutch.
Yes. The 09D has pressure taps for every clutch. Confirm K1 apply pressure is correct before replacing hard parts, because valve body wear can cause similar flares.
Reset the transmission adaptations with a scan tool after the repair and drive the vehicle through all gears so shift timing relearns on the new parts.
