A-B1594206-AI MANIFOLD-INTAKEOne New Aftermarket Replacement Intake Manifold Fits Briggs and Stratton (B&S) Engines This aftermarket replacement intake manifold Fits Briggs and Stratton (B&S) small engines used in lawn tractors and lawn mowers. The intake manifold channels the air fuel mixture from the carburetor into the engine's combustion chamber, and a worn or cracked manifold can cause air leaks, rough running, and poor fuel efficiency. Fits Briggs and Stratton 40N777 and