A750E Master Rebuild Kit 2003, new and ready to install. Fits the A750E. Ships fast from the USA.
If your two-wheel-drive Toyota truck or SUV with the five-speed A750E is slipping between gears, flaring on the 2-3 shift, or coming back from a pan drop with dark, burnt fluid and friction dust, the clutch packs are finished and a full overhaul is the honest repair. This A750E master rebuild kit is cataloged for 2003-up units and is built to handle that whole job in one box: an overhaul kit of gaskets and seals, friction modules, a steel plate pack, molded pistons and a new filter. The listing reference number is HDK5400J.
The A750E is the rear-wheel-drive version of the Toyota/Aisin A750 family, an electronically controlled five-speed that TransGo lists as fitting 2003-on Toyota and Lexus applications. Every gear in it is produced by applying a specific combination of clutches and brakes with hydraulic pressure from the valve body. When the friction material on those packs glazes or wears thin, the clutch cannot hold full engine torque, so you feel slip, a soft shift or a flare. A seal-only overhaul kit fixes leaks; this master kit goes further and replaces the parts that actually wear in a high-mileage A750E: the frictions, the steels they bear against, the rubber-bonded pistons that squeeze each pack, and the filter that has been collecting the debris.
Pull the pan first. Clean red fluid with a single leak usually means seals only; brown fluid with a burnt smell and clutch material in the pan means the packs are damaged and this kit is the right call. Scan for stored codes and road test with a scan tool to see which shift is slipping. Our guide to Aisin slipping under load walks through separating a pressure problem from a worn pack, and if you are weighing whether to overhaul at all, read rebuild vs. replace vs. reman before you commit.
This kit is listed for the A750E from 2003 up, covering the two-wheel-drive versions of the Toyota 4Runner, Tacoma, Tundra, Sequoia and FJ Cruiser and other vehicles built with the A750E. The A750 stayed in production for many years and Toyota revised individual hard parts along the way, so check the transmission identification on the case and the clutch count in your drums against the kit before you start pulling packs apart. Component brands can vary by batch while the specification stays the same. If you are unsure, send us your year and VIN and we will confirm it. If your truck is four-wheel drive, the matching listing is the A750F master rebuild kit. You can see every part we carry for this family on the Aisin transmission parts page.
| Fits | A750E 2003 |
| Part type | Master Rebuild Kit |
| Condition | New |
| Brand | OEM |
| Reference | A750F |
| Ships | From the USA |
| Warranty | 1-year |
Doing this repair right usually means replacing these at the same time. Same transmission, ships together.
An overhaul kit with the gaskets and seals, friction modules, a steel plate pack, molded pistons and a filter. Hard parts such as drums, planetary sets, bushings, solenoids and the torque converter are not included.
No. The kit is cataloged for A750E units from 2003 up, the first model year of the A750 family. Confirm the transmission code on the case and your clutch counts against the kit, or send us your year and VIN.
Four-wheel-drive versions use the A750F. The internal clutch packs are shared with the A750E, and we list the same kit separately as the A750F master rebuild kit so it is easy to find for 4WD trucks.
Toyota WS (World Standard) ATF. Do not substitute a generic multi-vehicle fluid in a fresh rebuild, and check the level at the specified temperature with the engine running.
Yes. Reset the transmission adaptive learning with a scan tool and drive the truck through all five gears gently so it relearns apply timing on the new frictions. Skipping this often leaves harsh or soft shifts for days.
On a high-mileage A750E it is strongly recommended. Worn boost valve and solenoid modulator bores cause low line pressure, which is one of the main reasons frictions burn in the first place.
