Amazon.com: LTI 4 Inch Lap Joint Exhaust Band Clamp Repair Preformed for 4" ID to 4" OD Exhaust Pipe Connection 304 Stainless Steel (4 Inch) : Automotive
UPDATE: I found this exhaust pipe patch kit at Autozone for $11. Very easy to apply and worked like a charm. Rated for up to 1,900 degrees. : r/MechanicAdvice