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Don't forget, BTW, to never, ever, reuse the crush washers. Any time you need to work on the system, always have some spares available. You'll invariably need them.
The crush washers are both magical, and very malicious. If you only have one left to do the job, it will leap out of your hand, yes LEAP, fall down through the engine, and vanish before even hitting the ground. Gone like a puff of smoke. It won't be on the ground, or in the engine, either.
You have been warned!
I've not found a good "aftermarket" source for these washers, but even from the dealer they're cheaper than dirt. Should be PN 90430-08014, around a dollar each. As 2ToyGuy suggests, you should get 2 more washers than you think you'll need.