A760E Planetary

Owners of a 2010-2019 Tundra or Sequoia with the 4.6L V8, or a rear-drive Lexus GS 300, GS 350 or IS 350, usually go looking for an A760E planetary after one of three things: a whine that climbs with road speed, a gear that no longer engages, or a teardown that turned up chewed pinions and steel in the pan. This is a used original-equipment A760E planetary carrier assembly. The product photo shows the carrier from above, with its pinion shafts staked into a flat carrier plate and a toothed outer rim, which gives you something concrete to compare against your own part.

What the planetary does in an A760E

The A760E is Aisin's six-speed rear-drive automatic. It shares its first five ratios with the five-speed A750 (3.520, 2.042, 1.400, 1.000 and 0.716) and adds a 0.586 sixth gear, with a Reverse ratio of 3.224. Those ratios come from planetary gearsets whose sun gears, ring gears and carriers are held or driven by the clutches and brakes. A carrier holds the small pinion gears on hardened shafts with needle bearings, and it carries torque in most gears. When those bearings wear or a pinion tooth chips, the gearset starts to sing long before it fails outright, and a broken carrier ends with no drive at all.

Symptoms of a failing A760E planetary

• Whine or howl tied to road speed, often loudest in one or two of the six gears.
• A change in the noise between pulling and coasting.
• Missing gear, or the transmission computer flagging a ratio error and falling back to a limp gear.
• Steel flakes and slivers on the drain plug magnet or in the pan.
• Shudder or clunk when the gearset is loaded, from a pinion shaft that has walked out of its bore.

The A760E's most common complaints are solenoid and valve body related, and those cause harsh or late shifts, not gear noise. Slip with a burnt smell points to clutches; noise with steel debris points here.

How to confirm it before you buy

Note when the noise happens and whether it tracks road speed or engine rpm, then check the magnet for steel. Scan for stored codes so a solenoid fault is not mistaken for a mechanical one. On the bench, rock each pinion, look for pitting on the teeth and measure pinion thrust clearance. Toyota's A750F data, the closest published figures we checked for this gear family, lists 0.20 to 0.60 mm for the front pinions and 0.12 to 0.68 mm for the center; confirm the A760E value in your own repair manual. Our end play and thrust washer guide covers the measuring, and the Aisin overheating guide explains how heat breaks down the fluid that protects these bearings.

Fitment

This carrier is listed for the A760E. In North America that means the 2010-2019 Tundra and Sequoia 4.6L two-wheel-drive, the 2005-2007 Lexus GS 300, the 2006-2013 GS 350 and the rear-drive IS 350. The 4WD Tundra and Sequoia and the GX 460 use the A760F, and the five-speed trucks use the A750, so do not assume a carrier from either one interchanges. The listing does not state which gearset position or production year this carrier came from, so compare the spline count, pinion count and outer tooth pattern with your original, or send us your year and VIN and we will check it. If your truck has the five-speed instead, see the A750F planetary. All parts for this family are in our Aisin transmission collection.

Install notes

• Install new thrust bearings and washers on both faces of the carrier and inspect the bushings it rides on.
• Check total end play after assembly; a reading out of range usually means a missing or worn thrust part.
• Metal from a failed gearset reaches the clutches and valve body, so most builders pair this with an A760E master rebuild kit and a new filter.
• If a shift complaint came along with the noise, inspect the A760E valve body for debris while the unit is apart.
• Flush or replace the cooler, refill with Toyota WS ATF, set the level hot through the check plug and drive the vehicle through all six gears to relearn shift adapts.

Will this fit a 4WD Tundra, Sequoia or GX 460?

Those use the A760F. The gear ratios are the same, but confirm the part by comparing it with your original or sending your year and VIN before ordering.

Is this interchangeable with the five-speed A750 planetary?

Do not assume so. The A760E adds a sixth gear to the A750 design. Match spline count, pinion count and tooth pattern against your own carrier.

How can I tell planetary noise from differential noise?

Gearset noise in the transmission normally changes as the transmission moves between gears. Rear axle noise stays tied to road speed regardless of which gear the transmission is in.

What should I replace with the carrier?

Thrust bearings and washers, any worn bushings, the filter, and the clutches and seals if debris has circulated. Flush or replace the cooler too.

What fluid does the A760E use?

Toyota WS ATF. The level is set at operating temperature through the check plug, not with a dipstick.

• Transmission Endplay and Thrust Washer Wear: Why It Matters
• Aisin Overheating: Why It Happens and How to Prevent It
• How to Flush a Transmission Cooler After a Failure
• 8 Signs Your Transmission Is Going Bad