Briggs & Stratton 5140B Lawn Mower Tune-Up Kit Go to amazon.com Related posts Top 10 best tune-up kits 2022 FeatureIncludes 18 oz. oil,100005 1 Air Filter 495188S, 1 Spark Plug 591868 and 0.5 oz. Fuel Stabilizer 100120.Replaces 5106B, 5106, 5139B, and 5106A. DescriptionBriggs & Stratton 5140B Lawn Mower Tune-Up Kit.