The Mower Shop designs complete tune-up kits to simplify maintenance of Toro Recycler lawn mowers. Toro Recycler with Briggs & Stratton EXi Tune-up Kit (853151007318) includes all the genuine Toro and Briggs & Stratton parts to perform regular maintenance. Regular maintenance improves performance, protects engines from unnecessary wear and maximizes the lifespan of lawnmowers. Authentic parts included are 22 IN blade (131-4547-03), Air Filter (Briggs & Stratton 593260), spark plug (Briggs 491055T), 18 FL. OZ SAE30 Toro Premium Lawnmower Oil (38916) and a date of service decal to remind you of regular maintenance intervals. This kit is specifically designed for the latest Overhead Valve Engine. It is distinguished by its unique air filter and the OHV stamped into the valve cover. Special Note: Verify serial number before ordering. The air filter included in this package is unique to serial numbers 316000001 & higher. Fits following models and serial number ranges: 20332 (Serial #316000001 - 999999999) 22in Recycler Lawn Mower, 20333 (Serial #400000000 - 404319999 22in Recycler Lawn Mower, 20334 (Serial #316000001 - 999999999) 22in Recycler Lawn Mower, 20339 (Serial #400000000 - 999999999) 22in Recycler Lawn Mower with SmartStow, 20340 (Serial #400000000 - 999999999) 22in Recycler Lawn Mower with SmartStow, 20353 (Serial #315000001 - 999999999) 22in Recycler Lawn Mower, 20355 (Serial #400000000 - 404329999 22in Recycler Lawn Mower with SmartStow, 21320 (Serial #400000000 - 999999999) 21in Recycler/Rear Bagging Lawn Mower, 21328 21in Recycler/Rear Bagging Lawn Mower, 21329 (Serial #400000000 - 999999999) 22in Recycler Lawn Mower with SmartStow, 21332 21in Recycler/Rear Bagging Lawn Mower, 21352 21in Recycler/Rear Bagging Lawn Mower, 21378 22in Recycler Lawn Mower with SmartStow, 21462 21in Recycler/Rear Bagging Lawn Mower. 21472 22in Recycler All Wheel Drive Personal Pace. 21464 22in Recycler Electric Start Personal Pace. 21465 22in Recycler Personal Pace & SmartStow. 21445 22in Recycler SmartStow. 21442 22in Recycler.