[RC12YC Spark Plugs] Lawn mower spark plugs compatible with RC12YC; Fits models 491055, 491055S, 692051, 792015, 72347GS, 805015, 499608, 491055T, 694385, 5066; Replaces 25 132 12-S, 25 132 12-A, 24 132 01-S, 12 132 02-S, 12 132 02, 531308128; Compatible with JD M78543, 2829 71-1 711; Fits Gravely 21525900, 21531100, 21534100, 21536800, 21537800, 21544000 lawn mower engines. [Convenient Set] 491055S spark plugs come in a 4-pack and are direct replacements for your lawn mower. Convenient and cost-effective. Helps save time and effort. [Premium Quality] Made with high-quality materials. Precision machined and rigorously tested to ensure reliability and durability. Provides stable performance and extended service life. [Easy to Install] RC12YC spark plugs are designed for easy replacement in small lawn mower engines. Accurate sizing ensures proper fit and smooth operation, helping to prolong engine life. Note: The actual product may vary slightly in color due to lighting and display differences. This does not affect functionality. Material: Metal Color: As shown Package Contents: 4 x RC12YC spark plugs 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.