U151E Clutch Drum 2001, remanufactured and ready to install. Fits the U151E. Ships fast from the USA.
A V6 Camry, Sienna, Highlander, RAV4 or Lexus RX that slips or flares in the upper gears, smells burnt, or came back from a rebuild with no fourth or fifth is very often a burnt clutch pack inside the rear of the Toyota/Aisin U151E five-speed. This listing is the complete direct and overdrive clutch drum assembly for the U151E, its all-wheel-drive twin the U151F, and the related U150E. It is a remanufactured unit: the drum is cleaned, tested and inspected, then built up with new molded pistons for the direct and overdrive packs, a new overdrive piston retainer, four new overdrive clutch discs and three new direct clutch discs. The steel plates are good used originals.
In the U151E the direct clutch drum rides on the intermediate shaft at the back of the unit and is fed with oil through the transaxle rear cover. One drum carries two packs. Toyota's service manual lists four discs and four plates for the overdrive direct clutch and three discs, three plates plus a cushion plate for the direct multiple disc clutch, each held by its own flange and snap ring. A single return spring sub-assembly and a clutch balancer sit under a snap ring in the drum, and the balancer cancels centrifugal pressure so the packs release cleanly at high speed. Because both packs share one drum and one feed path, a leak at the drum O-ring, a torn piston lip or worn rear cover sealing rings weakens two clutches at once.
Rebuilders who see a lot of the U150 family report the same chain: the support in the rear cover wears its sealing rings, pressure to these packs drops, and the clutches burn from low apply pressure. That is why a drum swap should always go in with a fresh rear cover seal set.
Start with the fluid and a scan for codes, then make sure the problem is a mechanical slip and not a solenoid or adaptation issue. Our guide to shift flare versus slip explains how to tell the two apart on a road test, and Aisin slipping under load covers pressure checks for this family. With the unit apart, Toyota's check is simple: measure pack clearance with a dial indicator while applying and releasing 392 kPa (57 psi) of air through the rear cover. The direct and overdrive clutch standard is 0.61 to 0.83 mm. Burnt or discolored lining, or worn grooves, means the discs are done, and a return spring set shorter than 25.91 mm free length should be replaced.
The listing covers 2001-up U150E, U151E and U151F transaxles. In North America the U151E and U151F were used behind the V6 in the 2004-2006 Camry, 2004-2008 Camry Solara, 2004-2010 Sienna, gas V6 Highlander, 2006-2012 RAV4 V6 and the Lexus ES330, RX330 and RX350. Four-cylinder models use the U241E or U250E and do not take this drum. The family was revised over its run, so compare the drum, piston and spline details in our photos with your old part, or send us your year and VIN and we will check it. Browse the rest of our Toyota/Aisin parts on the Aisin transmission parts page.
| Fits | U151E 2001 |
| Part type | Clutch Drum |
| Condition | Remanufactured |
| Brand | OEM |
| Reference | U151F |
| Ships | From the USA |
| Warranty | 1-year |
Doing this repair right usually means replacing these at the same time. Same transmission, ships together.
The direct and overdrive clutch drum assembly, remanufactured, with new molded direct and overdrive pistons, a new overdrive piston retainer, four new overdrive clutch discs and three new direct clutch discs. The steel plates are good used originals.
No. Four-cylinder Toyota models use the U241E or U250E. This drum is for the V6 U151E, the all-wheel-drive U151F and the U150E. If you are unsure which unit you have, send us your year and VIN.
Toyota lists 0.61 to 0.83 mm for the direct and overdrive clutch packs, measured with a dial indicator while applying and releasing 392 kPa (57 psi) of air. Use a different selective flange to correct it.
A common cause in this family is worn sealing rings on the rear cover support, which lowers apply pressure to the packs in this drum. Replace those rings and clean friction debris out of the valve body, or the new drum can fail the same way.
Toyota ATF WS. Do not use a universal Dexron fluid. Fill it, run it to operating temperature and set the level hot.
