for a 1998 venture
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1998 Chevrolet Venture Question: do you have to have a gasket for a thermostat if has an o-ring on it?
Answer #1Jim Taddei July 06, 2011, 16:25Master
Most commonly you would not have a gasket when the thermostat has an o-ring. However, as with any rule there are exceptions. Your best bet is to look and see if there is a gasket or not when you take the old thermostat out. You local parts supplier will also be of help.
Replyjroglesby1, July 06, 2011, 20:06Rookie
thanks for you help. RO