This Briggs & Stratton Maintenance Kit for EX and Exi Series Engines is for EX and Exi Series push mower engines. The tune-up kit contains Briggs & Stratton genuine OEM parts; including an air filter, spark plug, and an 18 oz. bottle of SAE 30 oil. Only Briggs Stratton genuine parts are specially designed to exact OEM standards, manufactured and tested to help deliver optimum performance in Briggs Stratton engines. Not only are Briggs Stratton genuine parts guaranteed to fit, but using them ensures that the Briggs Stratton engine they are installed on complies with applicable (EPA) emission regulations. There are no substitutes when it comes to keeping engine powered equipment healthy, to maximize engine life, meet original equipment specs and provide full warranty coverage, always use genuine parts from Briggs & Stratton.