Head Gasket Repair Cost

Wondering whether to repair or replace a blown head gasket? The right choice depends on how bad the damage is.

Head gasket repair costs range from $50 for a chemical sealant treatment to $1,500–$3,500 for full replacement. Chemical sealants like BlueDevil or Bar's Leaks can temporarily seal minor leaks for $30 to $80, but they're a band-aid — not a permanent fix. For a proper repair, the head must come off, the gasket replaced, and the head resurfaced. There's no middle ground between a sealant and a full replacement.

The decision between a sealant and full repair depends on your situation. If the car is high-mileage and you just need it to last a few more months, a sealant might buy time. But if you plan to keep the car, full replacement is the only reliable option. A mechanic should perform a block test or compression test to confirm the gasket is blown before committing to the expense — similar symptoms can come from a cracked head or block.

Ez Mobile Mechanic gives you an honest assessment at your Jacksonville location. We'll test your head gasket and tell you whether it's worth repairing. Our rate is $150 for the first hour, $100 per hour after. We're a mobile mechanic in Jacksonville — we come to you, no tow truck required. Call (904) 788-7272.