A750F Planetary, used and ready to install. Fits the A750F. Ships fast from the USA.
A whine from under a 4x4 4Runner, Tacoma, Tundra, Sequoia, FJ Cruiser or Lexus GX 470 that rises and falls with road speed, a gear that has simply disappeared, or a pan full of steel glitter after the A750F was dropped are the usual reasons a buyer ends up looking for this part. This is a used original-equipment A750F planetary carrier assembly. The product photo shows the carrier with its helical pinion gears visible through the side windows, a mounting flange drilled with oil holes, and a splined hub with a bronze bushing pressed into the bore.
The A750F uses three simple planetary gearsets, which Toyota's service data calls the front, center and rear planetary. Each one has a sun gear, a ring gear and a carrier holding pinions that orbit between them. Clutches and brakes hold or drive different members of these sets, and the combination produces the five forward ratios (3.52, 2.042, 1.40, 1.00 and 0.716) plus Reverse. Because the carrier is part of the power path in most gears, worn pinion needle bearings, chipped teeth or a loose pinion shaft show up as noise first and as lost drive later.
Clutch wear is the A750 family's more common complaint, and it does not make this kind of noise. If you have slip without whine, a worn clutch pack or a solenoid fault is more likely than the gearset.
Drive the truck and note whether the noise tracks road speed or engine speed, and in which gear it is loudest. Drain the fluid and look at what is on the magnet. Once the case is open, rock each pinion and measure pinion thrust clearance with a feeler gauge. Toyota's A750F data gives 0.20 to 0.60 mm for the front planetary pinions, 0.12 to 0.68 mm for the center and 0.2 to 0.6 mm for the rear. Our thrust washer and end play guide explains why these clearances matter, and the warning signs guide helps separate gear noise from other failures.
This carrier is listed for the A750F, used in the 4x4 4Runner from 2003, the 2003-2009 GX 470, the 2003-2007 Land Cruiser and LX 470, the 2004-2009 4x4 Sequoia, the 2005-2015 4x4 V6 Tacoma, the 2005-2009 4x4 Tundra and the 4x4 FJ Cruiser. The listing does not say which of the three sets it is or what year the unit came from, so match it to your original before you order. Count the hub splines, compare the pinion count and flange shape, and measure the bushing: Toyota lists a 57.48 mm standard bore for the front planetary gear bushing and 20.075 mm for the rear. You can also send us your year and VIN and we will check it. Earlier and later A750E carriers are listed as the 2003 A750E planetary and the 2009 A750E planetary, and the rest of this family is in our Aisin parts collection.
| Fits | A750F |
| Part type | Planetary |
| Condition | Used |
| Brand | OEM |
| Ships | From the USA |
| Warranty | 1-year |
Doing this repair right usually means replacing these at the same time. Same transmission, ships together.
The listing does not say. Compare the spline count, pinion count and flange shape with your original, and measure the bushing bore against Toyota's figures, or send us your year and VIN before ordering.
The A750E and A750F share the same gear train, but internal parts changed over the years. Match it against your old carrier before installing.
Planetary noise usually changes with gear selection inside the transmission. Transfer case or differential noise stays the same in every transmission gear at a given road speed and may change with 2WD and 4WD modes.
The thrust bearings and washers around the carrier, any worn bushings, and usually the clutches and seals that were exposed to the metal debris. Flush or replace the cooler as well.
Toyota WS ATF on most A750 trucks. Confirm in your owner's manual and set the level hot using the check plug procedure.
