Amazon.com: Champion Copper Plus 430 Spark Plug (Carton of 1) - RC9YC4 for 1984 - 2020 Mitsubishi Outlander Sport, Toyota Sequoia and Toyota Sienna : Toys & Games
Champion RC9YC4 - Alternative spark plugs
BUJIA CHAMPION RC9YC4 - CHARC9YC4
Champion Copper Plus Spark Plug 430 (RC9YC4) [Lot of 7] NOS – governmenttransitsurplus.com
Champion Copper Plus 430 RC9YC4 Spark Plugs - Box of 4 | eBay