A750E Input Drum 2003, used and ready to install. Fits the A750E. Ships fast from the USA.
If your 2003-up Toyota 4Runner, Tacoma, Tundra, Sequoia or FJ Cruiser with the A750E five-speed has started slipping on the 3-4 shift, takes too long to pick up Reverse, or you have the transmission on the bench and found the drum cracked or its hub worn, this listing is the drum you need. Although it is listed as an input drum, the part itself is the Toyota/Aisin direct clutch drum, part number 117555AB, the taller 4-3/4 inch version with a 7-1/2 inch outside diameter, designed for 2003-up units. It is a used original-equipment piece, checked and in good used condition.
The A750E is the two-wheel-drive version of Aisin's five-speed automatic for Toyota trucks, with ratios of 3.520, 2.042, 1.400, 1.000 and 0.716 plus a 3.224 reverse. It sits just behind the input shaft and front pump, which is why it often gets called an input drum. Inside it, the direct clutch pack applies for the upper gears, and the outer bore of the same drum carries the reverse clutch piston. Toyota's service data lists both of these clutches with their own return springs and selective flanges. Line pressure reaches each piston through sealing rings that ride on the drum hub, so a grooved hub or a crack at the spline teeth drops apply pressure and lets the plates slip.
The A750 family is also known for shift and lockup solenoid trouble and valve body wear, and both can imitate a slipping clutch, so rule them out first.
Read codes, then gauge line pressure. Toyota calls for 52 to 62 psi in Drive and 73 to 87 psi in Reverse at idle on the A750F, rising to 198 to 214 psi in Drive and 185 to 218 psi in Reverse at stall. If pressure is within spec but Reverse and the upper gears still slip or lag, the leak is inside the direct or reverse clutch circuit. Our Aisin harsh or delayed shift guide covers engagement complaints, and the slipping diagnosis guide walks through gear-by-gear testing.
The 117555AB drum is cataloged for 2003-up A750E and A750F units and is shared with the six-speed A760 and A761 families. A750E trucks include the 2003-2009 V8 4Runner, 2005-up V6 4Runner, 2005-2015 V6 Tacoma, 2005-2009 Tundra, 2005-2009 Sequoia and the 2WD FJ Cruiser. This family uses two different drum heights, and this is the taller 4-3/4 inch, 7-1/2 inch OD version. Measure your original before ordering, or send your year and VIN and we will confirm it. More parts are in our Aisin parts collection.
| Fits | A750E 2003 |
| Part type | Input Drum |
| Condition | Used |
| Brand | OEM |
| Reference | A760E |
| Ships | From the USA |
| Warranty | 1-year |
It sits right behind the input shaft and pump, so it is commonly sold as an input drum. The part number, 117555AB, identifies it as the direct clutch drum that also houses the reverse clutch piston bore.
Measure your old drum. This one is about 4-3/4 inches tall with a 7-1/2 inch OD; the shorter version is 4.285 inches tall with a 6-7/8 inch OD. You can also send us your year and VIN.
Yes, 117555AB is cataloged for both the A750E and A750F from 2003 on. The F is the four-wheel-drive version of the same transmission.
Toyota's A750F data lists 0.50 to 0.80 mm pack clearance for both the direct and reverse clutches, set with selective flanges.
Toyota WS ATF, checked hot through the overflow plug. Let the transmission relearn its shifts with a few gentle road-test cycles.
