Arnold Briggs & Stratton Tune-Up Kit for Quantum Engine Series 625-650 For use with Briggs & Stratton Quantum engine Series 625-650 Kit contains everything needed for regular engine maintenance including spark plug, 20 oz. SAE 30 engine oil, 2.0 oz. fuel stabilizer and air filter 2 oz. bottle of fuel stabilizer keeps fuel fresh and enables quicker starts; 20 oz. bottle of SAE 30 protects against engine wear and corrosion; air filter keeps engine running at peak performance Replaces Champion RJ19LM, J19LM, CJ8 and RCJ8. Air filter replaces O.E. #491588.