Replaces the worn front oil pump in Toyota U140E and U240E transaxles, restoring line pressure on slipping Camry, RAV4 and Highlander units.
A Camry, RAV4, Highlander, Solara or Lexus RX 300 that creeps into gear, slips on every shift once it is hot, or whines in Park is often pointing at the front oil pump. This pump is listed for the Toyota U-series front-drive transaxles: the four-speed U140E and U140F and the U240E and U241E, the five-speed U250E, and the U150E, U151E and U151F. It is cross-referenced to Toyota numbers 35035-28010, 35035-12070, 35035-08010 and 35370-28010, which makes it a practical choice for a rebuild where the original pump body came out scored.
These are Aisin-built transaxles, and every one of them depends on a single crescent-type gear pump mounted at the front of the case. The torque converter hub turns the drive gear any time the engine runs. The pump output becomes line pressure through the regulator valve and the line pressure solenoid, and from there it feeds the shift solenoids, every clutch and brake apply circuit, converter charge, lockup and the cooler and lube circuits. On the U140E, the ECM handles shifts with the SL1, SL2 and S4 solenoids, plus a DSL solenoid that runs lockup and also controls B2 in manual low. None of that control is worth anything if the pump cannot supply volume, so a worn pump shows up as a general loss of holding power rather than a single bad shift.
A 2-3 flare or slow Reverse by itself is more often a direct clutch problem on these units. Sonnax notes that the direct clutch sealing rings wear into the ring grooves of the cover and drum, and that a missing washer seal between the case and rear cover also bleeds off pressure, so do not stop at the pump if only one shift is bad.
Start with fluid level and condition. Then fit a gauge to the line pressure tap and compare idle and stall pressure in Drive and Reverse. Low in both ranges means a supply problem: the pump, its bushing, or the regulator side. Low in one range only means a leak in that clutch circuit. Our line pressure testing guide covers the hookup, and Aisin slipping under load helps separate pump loss from worn clutches.
The listing covers 2001-2012 RAV4, 2002-2011 Camry, 2001-2007 Highlander, 1999-2003 Lexus RX 300 and ES 300 and 2002-2008 Solara with the 2.4L four or the 3.0L and 3.3L V6. The E and F suffixes are the front-drive and all-wheel-drive versions of the same transaxle. Toyota's own catalog shows how wide one of these numbers runs: the 35035-08010 front pump body and gear subassembly is listed for Camry, Avalon and other models from 2003 through 2014. Even so, the pump must match your transaxle code, which is on the case tag, so compare the stator shaft splines and bolt pattern with your old pump, or send us your year and VIN and we will check it. There is no single U140E collection page yet; related parts are in our hard parts category.
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It is listed for the four-speed U140E, U240E and U241E and for the five-speed U250E and U151E families. Check the transaxle code on the case tag and compare it with your old pump, or send us your year and VIN to confirm.
The F suffix (U140F, U151F) is the all-wheel-drive version. The transfer section differs, but the listing covers the front pump for both E and F units.
At minimum a new front seal, pump O-ring and a filter. Inspect the converter hub, and if the unit is open, replace the sealing rings and clutches with a master rebuild kit so the new pump is not feeding worn circuits.
Usually not. A pump problem tends to affect every gear. A flare on one shift on these units more often comes from worn direct clutch sealing rings or ring grooves, so pressure test before buying.
Clear codes and reset the learned shift values after the repair, then drive through all gears so the computer relearns with the restored pressure.
