[RC12YC Spark Plugs] Lawn mower spark plugs compatible with Champion RC12YC; Fits Briggs and Stratton models 491055, 491055S, 692051, 792015, 72347GS, 805015, 499608, 491055T, 694385, 5066; Compatible with Kohler models 25 132 12-S, 25 132 12-A, 24 132 01-S, 12 132 02-S, 12 132 02, 531308128; Replaces JD M78543, 2829 71-1 711; Fits Gravely models 21525900, 21531100, 21534100, 21536800, 21537800, 21544000. [Convenient Set] RC12YC spark plugs are direct replacements for select lawn mower engines. Designed for easy replacement to help save time and maintenance costs. [Premium Quality] Constructed with high-quality materials and precision engineering. Each spark plug undergoes strict testing to ensure reliability, consistent performance, and extended service life. [Easy to Install] Features accurate sizing for hassle-free installation. Designed to maintain engine efficiency and support optimal mower performance. Note: The actual product may vary slightly in color due to lighting and screen settings. This does not affect functionality. Type: Spark Plug Condition: New Color: As Shown Material: Metal Package Contents: 2 x Spark Plug Note: Light reflection and different displays may cause the color of the item in the picture to appear slightly different from the actual item. Measurement may vary by +/- 1-3 cm.