EXHAUST ADAPTERS and MUFFLERS FOR ALL K&B 3.5 These also fit some OS .21's that copied the K&B exhaust pattern
30-8905 Exhaust adapter straight early type without o-ring
30-8922 Cast muffler adaptor is used between the engine and can K&B 3.5 muffler. These mufflers were used on Aero, Inboard and Outboard engines. Includes: 1 cast adaptor and 2 screws for attaching to engine.