Mercedes-Benz/Chrysler/Nissan/Toyota/Mitsubishi Spark Plug HR7DC+5 0242235661

HR7DC+5 spark plug installed in cylinder head (OEM 0242235661) fires at end of compression stroke to ignite the mixture and drive the piston. Fits many post-2000 models from Mercedes-Benz CLK, Chrysler, Nissan, Toyota, and Mitsubishi; low installation difficulty; 30–60 minutes labor; use standard offset box-end wrench. If idle jitter, weak acceleration, rising fuel consumption, or hard starts occur, electrode wear or heavy carbon buildup is indicated; replace to ensure combustion efficiency.