General description vhbw offers a robust starter gear as a replacement part for your lawn mower, garden tractor, or ride-on mower. This high-quality replacement pinion is designed to optimize the performance of your lawn mower, ensuring a smooth and reliable starting process. The pinion is a crucial component in the starting mechanism, transferring the rotary motion of the starter motor to the engine's crankshaft. 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 394805 Replacement for 280104, 280104S Fits 14, 16, and 18 hp two-cylinder engines Installation Installation is simple and convenient, requiring no specialist tools. Usage The replacement pinion ensures your lawn mower's engine starts smoothly and reliably, enhancing the overall performance of your equipment.