Rear differential drain plug part number

Tried searching and can't find a solid answer. I'm going to change the fluid in my rear differential soon and I know the head of the drain plug is banged up from dragging over rocks so once I get it out I'm going to want to change it out for a new plug. Does anyone know the part number for the drain plug? Is it

$7 90341-10011 Plug, Straight Screw

90341-10011?

 

Www.parts.toyota.com

 

What category would the rear axel fall under? Because I’m not finding it there.

 

Buy a 90341-18035, big magnet, smooth head w/ 10mm hex. Crush gasket is

$21 12157-10010 Toyota Oil Drain Plug Crushable Steel Gaskets Set of 10 OEM 12157-10010

12157-10010.

 

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You should listen to him

 

Those are Toyota parts? What are they from? I don’t like the hex head. Gets crud and rust in there and then easy to strip upon removal.

 

Thank you. Drain plug is the one on the left I believe?

 

Those are factory parts, the 18035 has multiple apps. The hex works well on the axle drain as it is smooth and doesn't easily become chewed up. A dab of grease or rust proof spray wax keeps them all steel and easy to remove.

If you want to stay with the 24mm type, order a 90341-18040.

 

Wish we had this post started a couple weeks ago when I set out on my own to find this plug using the TW search bar. I was unsuccessful.... changed my rear diff oil yesterday and reused the original plug with a new crush Washer.
I know it’s not the plug on the right in this picture. (Part

$9 90341-24014 Front Differential Drain Plug

90341-24014) Ordered it thinking it was the right part. It’s sitting next to the original rear diff drain plug...
what did I order???

 

FWIW, I dislike the stock 24mm hex bolts (like on the right). They round off, they get boogered on rocks, junk builds up in the guard ring so fitting a socket get tough. I've had a corner of one get caught on a rock and loosen enough to weep gear oil.

So I replace them with the 10mm Allen key type (on the left).



These are internal Allen key plug numbers:

Drain (magnetic) plug: 90341‑18021
Fill (non-magnetic) plug: 90341-18016

Gaskets are the same regardless.

Crush gasket for aluminum (transfer case, manual transmissions): 90430-18008
Crush gasket for steel (diffs):

$21 12157-10010 Toyota Oil Drain Plug Crushable Steel Gaskets Set of 10 OEM 12157-10010

12157-10010

 

Ok you make good points. Those are the very reasons I’m in the situation I’m in with wanting to replace the plug with a new one. So just to confirm, the original plug is number 90341-18040 but the recommendation is to replace it with 90341-18035? What then is the number you provided of 90341-18021?

 

The original small magenet 24mm is a 90341-18057.
Small magnet 10mm hex is 90341-18021
Large magnet 10mm hex is 90341-18035

 

90341-18021 is the round one with the 10mm Allen and short magnet.


90341-18057 is 24mm hex head with a short magnet.


90341-18040 is 24mm hex head with a tall magnet.


90341-18035 is the 10mm Allen key with a tall magnet.

 

Thank you. This is why TW is the best place. The general consensus is that 90341-18035 is the best replacement then I’m gathering?

 

The question would be whether or not it contact the ring gear. If it does not then it would be OK. I don't know that it's necessary, I run a short magnet and between changes I doubt I could measure the amount of debris building up. It's like a pixie dusting at most.

 

That’s my concern as well. If the stock one is short probably best to stay with the short, in this case 90341-18021.

 

They will fit the drain, in the past, Toyota spec'd the 18040 for various Land Cruisers and a few mini trucks.

Of course, if you want to try and bottom out, there is always the porno sized 90341-18044 from the old 90's twin turbo Supra.

 

Looks like a dog boner.

 

Which plugs come with magnets from the factory? 6MT? Transfer case? Rear Diff?