Honda OEM-grade Ignition Coil 30520-5Z2-003 CM11-123 Reliable Startup

Honda Civic, CR-V, Accord and other 4-cylinder models with R18 or K-series engines: if acceleration stumbles, idle shakes, or fuel consumption increases, replace with OEM 30520-5Z2-003 (also compatible CM11-123, 30520-5Z2-013) original ignition coil. No wiring modifications needed; function to convert low voltage to high voltage to ignite spark plug and ensure smooth operation; improves power response and cold-start performance.