Thermostat housing bolt size?
#1
Thermostat housing bolt size?
The bolt holding the housing onto my 91 Bonneville fell into another dimension through the portal hidden under my car. So after 2 days of searching I have given up, problem is I still need to attach my housing. Need to know the size and thread pattern of the bolt, because apparently this knowledge has been lost to time.
#2
Senior Member
Welcome to the forums!
Darn I hate it when bolts go into the abyss, never to be seen again.
May I recommend that you give a GM dealership, parts department a call.
They should be able to provide you with the exact bolt specs.
Darn I hate it when bolts go into the abyss, never to be seen again.
May I recommend that you give a GM dealership, parts department a call.
They should be able to provide you with the exact bolt specs.
__________________
1997 Buick Pk Ave (Soft Ride) Suspension!
1997 Buick Pk Ave (Soft Ride) Suspension!
#3
Senior Member
Measure depth of the hole, add thickness of flange to get length, and subtract 3/16 from length.......my guess is a 10mm thread....or just get a 10mm bolt and hacksaw to correct length....
Double check hole opening.....measure thread to thread, not hole opening.....
8mm=0.315"
10mm=0.39"
12mm=0.47"
Double check hole opening.....measure thread to thread, not hole opening.....
8mm=0.315"
10mm=0.39"
12mm=0.47"
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