I've read here that many of the rebuild and waterpump kits (even those from MMC) have had the wrong o-ring. I'd suggest going to the dealer and ordering the one that the parts manual shows and see if it's correct. The number is MD030763 and it's a 15.9 size.

[EDIT] Wait a minute - I just read your question again. It's likely that the o-ring looks squared off because it swelled up against the walls of the waterpump and "became" squared off over time. If the supplied o-ring is a snug fit, use it. [EDIT]

Frank

Frank

Last edited by FrankR; 10/28/05 02:36 AM.
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