This Briggs & Stratton Genuine Tune-up Kit is designed exclusively for Q45™, Classic™, Sprint™, and Quattro™, and 300-550 Series™ engines with plastic air cleaning housings. This comprehensive kit contains: 1. 4-cycle 30W oil 18oz (100005) 2. Fuel stabilizer 1oz (100031) 3. Foam air filter (272235S) 4. Spark plug (802592S) 5. Step-by-step tune-up instructions Briggs & Stratton Genuine Part Designed specifically for our engines and can save on costly repairs while maintaining valuable warranty coverage.