This 4-piece aftermarket spark plug set is designed for small engines, lawn mowers, generators, and outdoor power equipment. These spark plugs replace RC12YC and cross-reference common part numbers including Briggs & Stratton 491055, 491055S, 491055T, 692051, 792015, 5066, and Kohler 12 132 02-S. They also cross-reference John Deere M78543 / M87543, MTD 759-3336, NGK BCPR6ES, and Torch K/R5TC style plugs. Built for reliable ignition and smooth engine starting, these spark plugs are a practical choice for routine maintenance or replacing worn plugs. Please verify your old spark plug number, thread size, reach, and engine manual before ordering to confirm proper fitment.
4 Piece Spark Plug Set: Includes 4 aftermarket replacement spark plugs for lawn mowers, small engines, and outdoor power equipment.
Replaces Champion RC12YC: Cross-reference numbers include Briggs & Stratton 491055, 491055S, 491055T, 692051, 792015, and 5066.
Common Kohler Replacement: Compatible replacement for Kohler 12 132 02-S and related small engine spark plug applications.
Additional Cross References: Also replaces John Deere M78543 / M87543, MTD 759-3336, NGK BCPR6ES, and Torch K/R5TC style plugs.
Verify Before Purchase: Please match your old spark plug number, thread size, reach, and equipment manual before ordering to confirm fitment.
