Bolts and nuts in a Mazda MX5 NA (1989 - 1997) ensure the fastening of engine parts and the correct mounting of parts to the block. They hold parts such as cylinder head, crankcase parts and attachments in place under load and temperature. Proper fit and tightening torques are important here, especially for parts such as the cylinder head and sealing of the car's engine block, where forces and pressure combine.
