Our custom Tune-Up Kit includes genuine manufacture parts to re-power engine and renew blade. Performing an annual tune with our Original Equipment Manufacturer (OEM) Tune-up Kit maintains consistent performance, assures proper fit and protects your equipment. Please note this kit is designed exclusively for the models listed below. Please verify your model is listed. Fits Super Recycler Lawn Mower models 20030, 20033, 20036, 20037, 20042, 20043, 20045, 20053, 20054, 20055, 20056, 20058, 20062, 20090, 20091, 20092, 20093, 20095. Other models require different engine parts. Kit includes Air Filter (Briggs & Stratton 491588S), Spark Plug, 18 FL. OZ SAE30 Premium Lawnmower Oil (38916) and 21” Blade (Part 133-8183-03 formerly 108-3762-03).