BKR5EKC 5216 Spark Plug Economical Auto Parts

If idle speed is unstable, acceleration weak, fuel consumption noticeably rising, or cold start difficult, this usually means spark plug electrode gaps are too wide or carbon buildup is severe, causing insufficient ignition energy; replacement is needed. This spark plug is responsible for precise ignition of the air-fuel mixture during normal engine operation, ensuring complete combustion and smooth power output. Compatible with many mid-2000s models under General Motors, such as Buick and Chevrolet; OEM number BKR5EKC-5216. Use a torque wrench to tighten to standard torque to avoid thread or gasket damage or leaks.