NGK Spark Plug Stock # 2477

The NGK Spark Plug Stock # 2477 (MPN: ZFR5FIX-11) is a precision-engineered ignition component designed for reliable engine starting and consistent combustion across a wide range of automotive applications. Whether you're a daily driver maintaining factory specifications or a modification enthusiast fine-tuning fuel delivery systems, this spark plug delivers the electrode consistency and thermal stability required for dependable ignition performance.

NGK's reputation in the aftermarket tuning community stems from their ability to maintain tight manufacturing tolerances and superior materials that refuse to compromise under sustained high-RPM operation. Built with a trivalent metal plated shell and engineered ceramic insulator, the NGK ZFR5FIX-11 resists fouling and electrode erosion even in demanding conditions where ignition timing precision directly impacts horsepower delivery and throttle response.

This spark plug suits owners pursuing mild to moderate engine modifications, including intake upgrades and exhaust enhancements. The optimized heat range efficiently transfers combustion chamber heat to the cylinder head, preventing cold-fouling and pre-ignition knock under boost or high-compression builds, making it an excellent choice for various automotive applications.