That's odd that your 99 doesn't have the updated housing. My 98 has the new one. Or, at least I think it does. It was a standard setup when I replaced the thermo. a couple years ago.

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-Evan


Benz Fleet:
1968 UNIMOG 404.114
1998 E300
2008 E63


Non-Benz Fleet:
1992 Aerostar
1993 MR2
2000 F250