Upgrade ignition performance with the NGK Spark Plugs Iridium IX CR8EIB-9 spark plug, manufacturer part number 5258 and vendor part number 5258. Designed for motorcycles, powersports vehicles, and other compatible applications, this NGK Iridium IX spark plug delivers dependable ignition performance and long-lasting durability. Verify vehicle fitment against the manufacturer’s application guide before installation.
The iridium center electrode is approximately 25% smaller than a platinum electrode and about one-quarter the size of a conventional nickel electrode. This ultra-fine electrode design helps reduce the voltage required for ignition, supporting easier starting, consistent spark performance, and reduced stress on ignition system components. The CR8EIB-9 model is engineered as a direct-replacement spark plug for applications specified by NGK.
A newly developed metal shell plating provides enhanced resistance to corrosion, helping protect the plug in demanding operating environments. As part of the NGK Iridium IX line, the 5258 spark plug combines advanced electrode technology with the fit and reliability expected from NGK Spark Plugs. Confirm the correct heat range, reach, thread specification, and application compatibility before purchase or installation.
Features:
- Iridium center electrode: Provides a fine, durable electrode design for reliable ignition performance.
- Reduced voltage requirement: Ultra-small center electrode helps lower the voltage needed to produce a spark.
- Ignition system support: Reduced voltage demand may help extend ignition system component life.
- Corrosion-resistant shell plating: Enhanced metal shell plating helps protect against corrosion.
- Application fitment: CR8EIB-9 model and NGK manufacturer part number 5258 are intended for compatible motorcycle and powersports applications; verify fitment before installation.
- Brand and part number: NGK Spark Plugs Iridium IX, manufacturer and vendor part number 5258.