NGK COP Ignition Coil Stock # 48845

The NGK COP Ignition Coil Stock # 48845 (MPN U5112) is a coil-on-plug replacement unit engineered to original equipment specifications for reliable spark generation in modern engine architectures. This black ignition coil pack delivers consistent performance in high-demand ignition systems where traditional distributor-based setups have been replaced by direct coil mounting on each spark plug.

NGK's coil-on-plug design eliminates the spark plug wire entirely, reducing electromagnetic interference and potential voltage loss between the coil and electrode. By mounting directly on the plug, this architecture provides more precise ignition timing control and higher secondary voltage delivery—critical factors in emissions compliance and fuel efficiency. The compact form factor allows integration into tight engine compartments while maintaining OEM electrical specifications and heat dissipation characteristics.

This COP ignition coil is suited for automotive technicians and DIY enthusiasts performing spark plug or ignition system maintenance on vehicles using coil-on-plug architecture. Failure symptoms—rough idle, misfires, check engine light activation, or difficulty starting—warrant inspection and potential replacement of worn coils. The U5112 serves as a direct substitute when existing coils no longer meet OEM spark voltage requirements.

Coil-on-plug systems have become the industry standard across most automotive platforms since the early 2000s, offering advantages in reliability and engine management over older ignition architectures. NGK maintains a reputation for precision ignition components, with this coil offering proven compatibility across multiple vehicle applications requiring U5112-specification units.