Thermostat bolts
Safety Car
Joined: Mar 2005
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From: Fredonia WI
2025 Corvette of the Year Finalist - Unmodified
2024 C7 of the Year Winner - Unmodified
2023 C4 of the Year Finalist- Modified
2020 C4 of the Year Finalist - Modified
2019 C4 of Year Finalist (performance mods)
2018 C4 of Year Finalist
I am going by memory here ... but IIRC, the manual says 10mm but I also had torx bolts in my thermostat housing.
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From: In a parallel universe. Currently own 2014 Stingray Coupe.
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They must have changed the bolts as the C7 moved forward - my 2014 does not have torx bolts for the thermostat housing. It has 10mm bolts.
