Stainless Steel Natural T-BOLT V-Band Exhaust Manifold Clamp by Dorman®. Easily repair exhaust leaks without removing broken manifold bolts with Dorman’s Exhaust Manifold to Cylinder Head Repair Clamp. This Manifold Repair Clamp attaches to the cylinder head, applies pressure to the manifold and creates a seal to take the place of the broken bolts.