A750E Overhaul Kit 2002-2008, new and ready to install. Fits the A750E. Ships fast from the USA.
If your 2003-2008 4Runner, Tacoma, Tundra, Sequoia or Lexus GX470 is leaking transmission fluid, or you are tearing down the five-speed for a rebuild and need every gasket and seal in one box, this is the soft-parts kit for the job. It is a gasket and seal overhaul kit, reference K86900CA, for the Aisin A750E two-wheel-drive and A750F four-wheel-drive transmissions, manufactured in the United States and listed for 2002 through 2008.
An overhaul kit is the sealing half of a rebuild. It does not include clutch plates; it renews the paper and rubber gaskets, piston seals, sealing rings and O-rings that keep each hydraulic circuit holding pressure. In the A750E, line pressure travels from the pump through the valve body and along sealing rings on rotating shafts to the clutch and brake pistons. When those rings wear or the piston lips harden, apply pressure leaks off, so a pack that still has good frictions starts to slip because it is not squeezed hard enough. On a unit with healthy clutches, a full reseal with this kit restores pressure without paying for parts you do not need.
Fluid condition is the deciding factor. Red fluid and a clean pan magnet with a cold-engagement delay suggests hardened seals; burnt fluid and friction debris means the clutches are also worn and you need frictions in addition to this kit. TransGo also documents worn line pressure boost valves and bushings in 2003-and-later A750 valve bodies, which reduces line rise under load and can look like seal leakage, so test line pressure before teardown. Our guide to converter hub and pump bushing wear explains why a leaking front seal is often a bushing problem underneath.
The listing covers the A750E and A750F five-speed rear-drive transmission for 2002-2008. In the United States the A750 arrived for the 2003 model year in the 4Runner V8 and GX470, then spread to the Tacoma V6, Tundra and Sequoia for 2005 and the FJ Cruiser for 2007. Toyota made running changes across those years, so compare gaskets with your originals during teardown and send us your year and VIN if you want fit confirmed first. Later trucks may need a different kit; browse our other A750 parts on the Aisin transmission page.
| Fits | A750E 2002-2008 |
| Part type | Overhaul 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.
No. Per the listing it contains gaskets and seals only. If your clutches are burnt or glazed, pair it with frictions and steels or choose a master rebuild kit.
The 2005 Tacoma V6 4x4 uses the A750F, and the kit is listed for both the A750E and A750F from 2002 to 2008. Send your VIN if you want us to confirm before ordering.
The listing range starts at 2002, but in the United States the A750 first appeared in 2003 model-year vehicles, so 2003-2008 trucks are the practical fit.
The kit includes the seals, but check the converter hub and pump bushing too. A worn bushing lets the hub wobble and will wear a new seal quickly.
Toyota WS automatic transmission fluid, with the level set at the overflow check plug at the specified temperature.
