25182496 GM Ignition coil

What is this part?

The GM ignition coil 25182496 is a genuine OEM engine ignition system component designed to convert battery voltage into high-voltage electrical energy required for spark generation.

What does it do?

This OEM ignition coil steps up low-voltage power from the vehicle's electrical system into high voltage that is delivered to the spark plug, creating the spark needed to ignite the air-fuel mixture in the engine cylinder. It plays a critical role in engine starting, smooth operation, fuel efficiency, and emissions control. A genuine GM ignition coil is manufactured to factory specifications to ensure correct output voltage, timing compatibility, heat resistance, and long-term reliability.

When to replace

The GM ignition coil 25182496 should be replaced if there are symptoms such as engine misfires, rough idle, loss of power, hard starting, increased fuel consumption, or ignition-related fault codes. A failing ignition coil can lead to incomplete combustion and potential damage to the catalytic converter. Installing a genuine OEM ignition coil restores proper spark delivery and engine performance.

Compatibility

The genuine GM ignition coil 25182496 is compatible with selected GM engines and ignition systems. Compatibility depends on engine type, ignition design (coil-on-plug, distributor-based, or coil pack), electrical connector, and model year. Always verify the part number 25182496 before purchase to ensure correct fitment.

Installation: DIY or service?

Installation of the genuine OEM GM ignition coil 25182496 is often suitable for DIY installation, especially for coil-on-plug designs. Care should be taken to ensure proper electrical connection and torque. Professional installation is recommended for distributor-based systems or when diagnostics are required.