A750F Shift Kit, new and ready to install. Fits the A750F. Ships fast from the USA.
Four-wheel-drive Toyotas and Lexus trucks built from 2003 onward with the five-speed A750F automatic tend to develop the same short list of complaints as the miles pile up: the 2-3 upshift flares or binds, the engine revs up under throttle in third or fourth, the transmission hunts back and forth between gears at a steady cruise, and the lockup drops out late on a highway kickdown. If you own a 4x4 4Runner, Tacoma V6, FJ Cruiser, Tundra, Sequoia, Land Cruiser 100, GX470 or LX470 and that sounds familiar, this TransGo A750 shift kit is the valve-body repair built for exactly those problems. It is new, carries a 1-year warranty, and is priced at $285.77.
The A750F has no throttle cable and no governor. The transmission computer picks every shift and fires solenoids on the valve body, and the valve body turns those signals into apply pressure for each clutch and brake. Two spool valves in that casting wear faster than the rest. The TCC relay valve controls how the converter clutch applies and releases; once its bore wears oval, the computer can no longer control lockup slip or release rate. The solenoid modulator valve caps the pressure fed to the solenoids; when its bore leaks, solenoid output drifts high or low and line pressure follows it. TransGo's A750 kit attacks both: an oversized hardened steel TCC relay valve and bushing (with reamer and guides to size the worn bore), a drop-in solenoid modulator valve, bushing, spring and end plug that work in the existing bore, and two TCC boost valve and bushing sets so you can match the diameter your unit came with.
A flare and a true slip feel alike from the driver's seat but come from different places. Our guide to telling shift flare from slip explains how to separate a pressure-control problem the kit can fix from burnt clutches that need a teardown.
Start with fluid level and condition, because a 4x4 A750F that is a quart low will flare and slip just like a worn valve body. Then read stored codes and watch live data on a scan tool: if commanded gear and actual ratio disagree only during the shift, and the flare improves when the fluid is cold, worn valve bores are the likely culprit. If the fluid is black, smells burnt and the pan magnet is coated in friction material, the clutches are already damaged and a shift kit alone will not save them. Our walkthrough on Aisin transmissions slipping under load lays out the order of tests. Also rule out the solenoids electrically before you pull the valve body; a failing unit can mimic the same codes, and an A750F solenoid kit is cheap insurance while the valve body is out anyway.
TransGo states this kit fits 2003-and-newer A750E and A750F five-speeds, plus the related A760E/H, A761E/H, A960E and AB60E/F six-speeds. The F suffix marks the four-wheel-drive version, and published applications include the 2003-2024 4Runner 4x4, 2003-2007 Land Cruiser and LX470, 2003-2009 GX470, 2004-2009 Sequoia 4x4, 2005-2015 Tacoma V6 4x4, 2005-2009 Tundra 4x4 and 2007-up FJ Cruiser. Because TransGo includes two TCC boost bushings, you must measure and match the one already in your valve body. If you are unsure which transmission your truck has, check the identification plate or send us your year and VIN before ordering. Browse the rest of the family on our Aisin transmission parts page, or see the 2005-2015 A750F shift kit listing for second-generation Tacoma and FJ builds.
| Fits | A750F |
| Part type | Shift Kit |
| Condition | New |
| Brand | TransGo |
| Reference | A750 |
| Ships | From the USA |
| Warranty | 1-year |
Doing this repair right usually means replacing these at the same time. Same transmission, ships together.
The A750F stayed in the 4x4 4Runner well past 2010, and TransGo lists the kit for 2003-and-newer A750E/F units. Measure your existing TCC boost bushing and use the matching one of the two supplied. If in doubt, send us your VIN before ordering.
No. It restores worn valve-body circuits so pressure and lockup control return to normal. If the fluid is burnt and there is friction debris in the pan, the clutches need replacing with an overhaul kit at the same time.
Toyota WS (World Standard) ATF. Do not mix in Dexron or a universal multi-vehicle fluid, and set the level with the factory temperature-based check procedure.
The with-tools version of TransGo's A750 kit includes the reamer, guides and drill bits needed to size the TCC relay valve bore. You still need normal hand tools, a clean bench and a way to support the valve body while reaming.
Yes. Clear codes and reset the transmission adaptive values with a capable scan tool, then drive through all five gears under light and moderate throttle so the computer relearns shift timing.
