U760E Sprag Clutch, used and ready to install. Fits the U760E. Ships fast from the USA.
When a Toyota Camry, RAV4 or Highlander with the six-speed U760E sits at high rpm from a stop and barely creeps forward, then drives normally once it grabs second, the cause is often a single caged ring of steel wedges: the F1 sprag. This listing is that sprag by itself, a used original-equipment Toyota part with 20 sprag elements held in a plastic cage, cleaned and inspected, and cataloged under interchange number 277654A. It is the bare element and cage, not the races or the planetary assembly around it, which makes it the low-cost repair when the races are still smooth and only the sprag has worn, rolled over or broken.
ATSG's technical information for this transaxle family lists two driving clutches (C1 and C2), three brakes (B1, B2 and B3), a Ravigneaux planetary set, an underdrive planetary set, and exactly one one-way clutch, F1. In Drive first gear, F1 is the reaction member: each element tilts and wedges between its inner and outer race, locking the held member against rotation so the car can pull away. When the computer applies the next element for second gear, the load reverses, the elements tip back and the sprag simply freewheels. That is why the 1-2 shift needs no carefully timed release of a clutch. In manual first and in Reverse, ATSG's application chart shows the B3 brake doing the holding, and the computer can even release B3 through the SL solenoid to inhibit a Reverse engagement at speed. Because the sprag is purely mechanical, worn elements cannot be corrected by an adaptive relearn or a pressure change.
The sprag has no sensor, so a failure usually sets no trouble code. Codes that show up alongside a launch complaint more often trace to shift solenoids or valve body wear, the faults this family is best known for.
Verify fluid first. Toyota's bulletin T-SB-0036-13 requires WS fluid and a level check with the fluid between 185 and 194 F on a level vehicle; a low unit launches weakly with a perfectly good sprag. Next, run the range comparison: launch in Drive, then launch in S1. Since B3 holds in manual first and F1 holds in Drive first, slipping only in Drive isolates the one-way clutch. Slipping in both points to line pressure, the C1 clutch or the valve body, which our U660E and U760E problems and service guide covers in detail.
This sprag is listed for the four-cylinder U760E and all-wheel-drive U760F, and it shares interchange 277654A with the V6 U660E and U660F, because the whole family uses the same F1 one-way clutch design. It suits any of those units when the inner and outer races are reused. Count the elements on the sprag you remove (this one has 20) and match the cage width before ordering, or send us your year and VIN and we will confirm it. The rest of the family's hard parts are on our U660E and U760E parts page.
| Fits | U760E |
| Part type | Sprag Clutch |
| Condition | Used |
| Brand | OEM |
| Reference | U660E |
| Ships | From the USA |
| Warranty | 1-year |
Doing this repair right usually means replacing these at the same time. Same transmission, ships together.
No. It is the sprag element ring only: 20 elements in a plastic cage, interchange 277654A. Reuse your races if they are smooth and free of pitting. If the race is damaged, buy the complete sprag and ring gear assembly instead.
Yes. The listing covers the U660E, U660F, U760E and U760F, which share the F1 one-way clutch. Count the elements on your old sprag and compare the cage, or send us your year and VIN to confirm.
That is the classic F1 sprag pattern. In manual first the B3 brake holds the gear train, while in Drive first the one-way clutch does. Check the fluid level hot first, then plan on inspecting the sprag and races.
Per ATSG, hold the outer race; the inner race should freewheel counter-clockwise and lock clockwise when viewed from the rear cover end. A sprag installed backward gives no first gear in Drive, so test it by hand before final assembly.
Toyota WS ATF, with the level set between 185 and 194 F at the check plug. After the repair, clear the transmission adaptive values with a scan tool so shift timing is relearned.
