the first 091 i took apart had a 4th gear thrust washer, the second one did not. Should it have one also or did they come either way thanks

You CAN use a thrust washer with a bearing that does not have one built into it, but I dont think these bearings have the notch in it for the half moon key.. correct? Anyway, the 6-ribs never came out with the thrust washer.. someone probably did not have the right bearing and did it that way.

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