General description Robust starter gear designed as a replacement part for lawn mowers, garden tractors, and ride-on mowers. Optimizes the performance of your lawn mower with a high-quality replacement pinion for the engine and starter motor. This precision-machined gear enhances the starting process of your lawn mower. The pinion is crucial in the starting mechanism, transferring rotary motion from the starter motor to the engine's crankshaft. Ensures smooth and reliable engine starts. Made of high-quality material for maximum durability and a long service life. Technical specifications External diameter: 4 cm Internal diameter: 1.65 cm Width: 11.5 mm Number of teeth: 16 Colour: black Weight: 10 g Compatibility and accessories Compatible with Briggs & Stratton models: 28, 25, 40, 31, 44, 17, 22, 19 Replacement for part numbers: 280104, 280104S Installation Simple and convenient installation that requires no specialist tools. Usage Designed to replace worn or damaged pinion gears in