Thermostat Housing Bolt Kit - 6 mm x 1.0 Male Thread - 20 mm Long - Hex Head - Chromoly - Black Oxide - GM LS-Series - Pair

Thermostat Housing Bolt Kit - 3/8 in Male thread - 1.000 / 2.000 in Long - 12 Point Head - Washers Included - Chromoly - Black Oxide - Chevrolet - Kit