Got a hole in your exhaust? Carplan Mufflit Exhaust Repair Paste is designed to easily repair holes and cracks in exhaust silencer boxes. This easy to apply putty is easy to apply to awkward to reach cracks and splits, the special formulation dries at operating temperature to form a gas tight repair. The CarPlan Exhaust Repair Range is a complete solution for repairing large holes, cracks & splits on all car exhausts. The range is quick & easy to use with no need to dismantle the exhaust, leaving a permanent gas tight repair.