This is a diaphragm for all L-head twins and selected 8 and 11HP horizontal engines with a fuel pump

Longer life

Briggs & Stratton 84001918 Cylinder Head #1

With genuine Briggs & Stratton OEM parts

Replaces 35647

Briggs & Stratton 597303 Spring, Valve related-kohler-32-786-05-s-kohler-32-786-05-s-vertical-mount-muffler-kit-starter-side This is a diaphragm forOnly Briggs & Stratton genuine parts are specially designed to exact OEM standards, Manufactured & tested to help deliver optimum performance in Briggs & Stratton engines. Not only are Briggs & Stratton genuine parts to fit, but using them ensures that the Briggs & Stratton engine they are installed on complies with applicable (EPA) emission regulations.