A343F (80 series) transmission parts lists

[Malleus]

Several people have asked for information on transmission overhaul and rebuild parts recently, and since Toyota has not seen fit to continue to assemble parts for transmission repair as they had in the past, I put together a list of what would be needed. This is the list I use to rebuild them.
FWIW, the gasket kits for the A442F and the A343F for the V8 4.7L engine are still available; the overhaul kits with clutches are not – those parts must be ordered individually.

» The first list is what would have been in the Gasket kit, for the 80 series A343F. The second page of that list contains only parts for a valve body overhaul, should you have need of just those parts. They would have been included in the gasket kit.
» The second list contains the numbers for clutch discs and steels, if they were needed for repair. Although a good repair shop would replace all clutches and steels during a rebuild, you can reuse the steels and flanges, provided they are still serviceable (not scarred, warped or burned).
» The third list is the set of bearings, which were never included in kit form from Toyota.

NOTE: these are not all the parts needed to completely rebuild a transmission; you may find that some hard part, gear assemblies or clutches, for example, might also be required, but there's no way to know that in advance. If you wanted to rebuild your transmission, you should buy the gasket kit and a full set of clutches. That way, you'll have most, if not all the parts you need, and your second order, if you need one, will be pretty small.

Also, I have not included the 2nd coast brake band in the clutch list. IME it usually doesn't need to be replaced and at $100 each, it's a lot to add to an already expensive list. If you found you needed one after teardown, they are readily available from dealer stock.

All lists are sorted by the parts breakdown in the EPC, so that the lists can used as needed for individual subassemblies.

Part numbers listed in red have been delisted by Toyota, but are still available from stock (I found them, so you should be able to find them too). Prices are from US dealer stock and are current as of this week.

FWIW, the composite price for the gasket kit items is pretty close to what Toyota was selling them for as bundled; the advantage to buying them individually, if there is one, is that all the parts will be tagged with part numbers, unlike the grab bag you received from Toyota.

Gasket kit, Toyota part number 04351-60090:

List of clutches and steels (but excluding flanges); the clutches, along with the gasket kit, were the items sold in the overhaul kit:

I have not included part numbers for the flanges, because you cannot know which ones you have, or need, until you tear down the unit. I do have those numbers, if anyone wants them, I'll be glad to post them here.

List of all bearings in the A343F transmission for the 4.5L inline 6 cylinder engine:

If you find that one bearing is defective, you must replace all the bearings in the unit.

 

[Malleus]

In addition to the parts, I've found two tools to be indispensable: the Hagerty Snapress and the transmission holding fixture. You wouldn't normally consider buying tools for a job you may only do once, but this is a job you really can't do without a few special tools. Given the cost of parts alone, a few tools doesn't add much to the cost of the job, and will prevent you from unexpected expenses.

The Snapress is used to compress the return spring assemblies, that are in the way when you try to remove the shift pistons. You can make your own, and there are many cheaper varieties around, but if you damage a return spring assembly, you'll have to buy another; they can't be restored after they're bent. Ask me how I know.
Here's the Snapress:

The best price I've found is on Ebay. Unfortunately, Hagerty doesn't sell direct and I've never found a distributor to the public.

There are many holding fixtures, and if pressed, you could use a couple of plastic milk crates, but that's taking a risk, IMO. You need one that can pivot in two planes, because you have to work on the bottom (facing up) to remove and install the valve body and pan, and the front end to tear down and reassemble the unit. The absolute cat's meow is the OTC version (it is designed to mount on a bench):

At $700+, it's not something I'd buy if I only had to do this job once. The next best option, IMO, is this one, from Amazon:

It requires a little grinding on the ends of the arms to clear the pump body, but that won't compromise the integrity. It's not as handy as the OTC tool, but it's cheap and it'll work. Ignore the Ford/Chrysler stuff.

What will not work is this one:

The Aisin transmission doesn't have tapped bosses on the sides for this fixture, and I wouldn't want my transmission on an engine stand anyway. Your parts are going to be staged on a bench, so you might as well have the case there too.

Also, a metal pan with a lip on it is a great thing to have, to keep the ATF from running all over the place when you're stripping the case and cleaning/arranging parts (the professional rebuild shops have metal worktables with lips on them and a drain in one edge). I have two pans in abundance in my shop: medium plastic mortar tubs and the FloTool galvanized drip pan. It holds 7.5 pints and at 2'x4', it's exactly the right size to hold a transmission case. Put this on your bench, and you can work on the transmission without coating your world with ATF.

You'll find a pair (two) of extra long (12" or better) internal (squeeze to remove the ring) snap ring pliers invaluable. The brand doesn't matter, but they need to have the pin ends to fit into the holes in the snap ring ends. A long screwdriver, or two, will serve to remove the ones without holes.