How much should it cost to replace a blown head gasket on 84 BMW?

Replacing a blown head gasket on an 84 BMW requires labor and parts. On average, expect to pay between $500-$1000. The part itself costs approximately $100-$200, and labor costs vary based on the mechanic's rate and the complexity of the engine's design. Additional parts and labor might also be necessary for related repairs or replacements, such as a new head gasket, cylinder head bolts, timing chain, and coolant. It is important to get an accurate quote from a reputable mechanic before committing to the repair.