U151E Pump, used and ready to install. Fits the U151E. Ships fast from the USA.
If your V6 Camry, Sienna, Highlander, RAV4 or Lexus RX is slow to pull into Drive after sitting, slips under load once it is warm, or howls with a whine that climbs with engine speed, the front oil pump in the U151E (or the all-wheel-drive U151F) is one of the first suspects. This is a used OEM front oil pump assembly for the U151E/U151F five-speed transaxle: pump body, stator support and the crescent-type gear set, cleaned and inspected and shown exactly as pictured.
The U151E pump sits at the front of the case directly behind the torque converter. The converter hub drives the inner drive gear, which turns the outer driven gear around a crescent, and that flow is the only source of pressure in the transaxle. The SLT solenoid and the valve body regulate that flow into line pressure, but they can only regulate what the pump delivers. When gear and pocket clearances open up, or the body bushing wears and lets the converter hub wobble, every clutch and brake in the unit gets less apply pressure at the same moment.
Check fluid level and condition first. Then put a gauge on the line pressure port and compare idle and stall readings in Drive and Reverse; low pressure in both ranges points at the supply side (pump, pump bushing, or a stuck regulator), while low pressure in only one range points at a seal or circuit for that range. Our line pressure testing guide walks through the gauge hookup. Once the pump is out, Toyota's U151F manual gives the wear limits: maximum body clearance 0.17 mm, tip clearance 0.15 mm, side clearance 0.05 mm, and body bushing inside diameter no larger than 38.188 mm. Our converter hub and pump bushing wear article explains why a scored hub ruins a new bushing in a hurry.
This pump is listed for U151E (front-wheel drive) and U151F (all-wheel drive) applications: Camry V6 2004-2006, Camry Solara V6 2004-2008, Avalon 3.5L 2005-2007, Sienna 2004-2010, Highlander gas V6 2004-2013 (hybrids use an eCVT and do not apply), RAV4 V6 3.5L 2006-2012, and Lexus ES330 2004-2006, RX330 2004-2006 and RX350 2007-2009. Four-cylinder models use the U241E or U250E instead. The U151 family has been built with more than one gear style, and no public catalog splits them cleanly by year, so compare the crescent gear set in our photos against your own pump and match the casting or transaxle tag before ordering. If you are not sure, send us your year and VIN and we will check it. You can browse the rest of our Toyota/Aisin parts on the Aisin transmission parts page.
If the pump failed because the unit ran low or overheated, the clutch packs usually took damage too; a U151E overhaul kit covers the seals and frictions for that job. If pressure is fine but shifts are still soft, look at the U151E SLT pressure control solenoid before replacing hard parts.
| Fits | U151E |
| Part type | Pump |
| Condition | Used |
| 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.
Yes, it is listed for both the U151E front-wheel-drive and U151F all-wheel-drive transaxles. Toyota's U151F manual shows the same pump layout (drive gear, driven gear, stator shaft with 11 bolts). Still compare the gear style in the photos to yours, or send us your VIN.
A pump problem drops pressure in every range at once and often comes with a whine that follows engine RPM. A gauge on the line pressure port tells you quickly. If pressure is normal and shifts are still soft or flaring, the SLT solenoid, shift solenoids or valve body are the more likely cause.
Toyota ATF WS. Prime the pump and fill with WS only, then check the level at operating temperature using the overflow plug procedure for your vehicle.
At minimum a new front pump seal, the pump body O-ring and the two clutch drum seal rings on the stator shaft. Inspect the converter hub for scoring and replace the converter if the hub is grooved.
The pump itself needs no programming. If the transaxle was opened up for the repair, clearing the adaptive values with a scan tool and driving a series of gentle shift cycles helps the computer relearn clutch fill times.
