Master overhaul kit for the Aisin A760E/A761E 6-speed in Lexus IS250, IS350, GS350 and Toyota Crown, with frictions, steels, gaskets and seals.
Lexus luxury sedans from the mid-2000s, the LS430 and the six-speed IS and GS cars, are reaching the mileage where the automatic starts to slip on the highway, hang between gears or smell burnt after a long drive. When a teardown is the only honest fix, this master rebuild kit for the Aisin A760E and A761E six-speed supplies the friction plates, steel plates, gasket set, lip seals and O-rings to rebuild the unit completely, rather than patching the one clutch that failed first.
Both transmissions are Aisin rear-drive six-speeds controlled by solenoids and a computer that judges every shift from input and output shaft speed. The A760E sits behind six-cylinder engines and runs a 3.520 first gear and 0.586 sixth. The A761E is the version built for Toyota's V8 sedans such as the LS430, GS430 and SC430, and it uses a different gearset with a 3.296 first gear and 0.582 sixth. This kit is listed for both codes because the clutch and seal service parts are supplied to cover the pair, but the hard parts and ratios are not the same, so the code on your transmission plate is what you match, not the badge on the trunk.
Six forward gears means several clutch and brake packs trading torque on every shift. When one pack burns, the others have been running in the same overheated, contaminated fluid, and the rubber piston seals have hardened along with it. The kit's frictions and steels are meant to go in together: once a pack has overheated, its steels are usually discolored or heat-checked and will cause chatter against new linings. The gaskets, lip seals and O-rings reseal the case, pump and valve body so the unit holds apply pressure and stops weeping fluid.
Low line pressure burns clutches as surely as age does. TransGo documents that a worn pressure boost valve and bushing in this family causes lazy pressure rise, flare shifts, burnt frictions and codes such as P0746, P0771 and P0894, and Sonnax notes that solenoid performance codes on the A761 also set when a clutch slips. Check fluid condition and level first, then compare commanded and actual gear on a scan tool. Our Aisin harsh and delayed shift walkthrough covers the order of checks, and rebuild vs. replace vs. reman helps you decide whether a rebuild is the right path for your car.
The listing covers the 2006-2009 Lexus IS250, IS350 and GS350, the LS430, and 2005-up Toyota Crown. Be careful with the IS250 and early GS300: rear-drive versions of those cars also used the A960E, and the all-wheel-drive cars use the A760H, neither of which this kit is listed for. Read the code on the transmission ID plate, compare plate counts against the parts you remove, or send us the year and VIN before ordering. For a kit tied to the six-cylinder IS and GS cars only, see the A760E master rebuild kit for IS350 and GS350, and browse every part for this family on our Aisin transmission parts page.
| Transmission | Aisin A760E / A761E 6-speed automatic |
| Fits | 2006-2009 Lexus IS250, IS350, GS350; LS430; 2005-up Toyota Crown |
| Contents | Friction plates, steel plates, gaskets, seals, O-rings |
| Weight | 9.9 lb |
No. Both are Aisin six-speeds, but the A761E is built for V8 sedans like the LS430 and uses different gear ratios. This kit is listed for both, so match the code on your ID plate.
It is listed for the 2006-2009 IS250, but some IS250 and GS300 cars used the A960E or the all-wheel-drive A760H. Check the transmission code or send us your VIN before ordering.
Friction plates, steel plates, a gasket set, lip seals and O-rings for a full overhaul. Drums, bushings, the pump and solenoids are not included.
Toyota WS (World Standard) ATF. Soak the new frictions in it before assembly and set the level using the factory overflow procedure with the fluid hot.
Yes. Clear the transmission computer's learned values so it relearns shift timing for the new clutches, then drive through all six gears at varied throttle.
