The NGK CR8EHIX-9 Iridium IX Spark Plugs 3797 Set of 4 is a premium ignition solution designed to deliver reliable spark performance, smooth engine operation, and improved throttle response in compatible engines. This set includes 4 NGK Iridium IX spark plugs, making it a practical choice for replacing spark plugs in engines that require four plugs of this specific model.
Each spark plug features a fine-wire iridium center electrode designed to produce a concentrated spark and promote efficient ignition. The durable iridium construction offers excellent resistance to electrode wear, helping maintain consistent ignition performance over extended periods of use.
As part of the NGK Iridium IX series, these spark plugs feature a trivalent metal-plated shell that provides corrosion resistance, along with a high-quality ceramic insulator designed to provide effective electrical insulation and withstand operating temperatures. Each plug also incorporates a built-in resistor to help suppress electromagnetic interference that may affect electronic systems.
The NGK CR8EHIX-9 features an NGK heat range of 8, a factory-specified 0.9 mm electrode gap, a 12 mm thread diameter, and a 19 mm thread reach. These specifications make it suitable for engines designed to use this exact spark plug configuration.
With four spark plugs included, this set provides a convenient replacement solution for compatible four-plug engines. Whether performing scheduled maintenance or replacing worn ignition components, the NGK 3797 Iridium IX spark plug set offers dependable ignition quality, durability, and reliable performance.
Important: Always verify compatibility with your vehicle's make, model, engine type, and production year before purchasing or installing these spark plugs.
Features
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Set includes 4 NGK CR8EHIX-9 Iridium IX spark plugs.
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Fine-wire iridium center electrodes provide precise and reliable ignition.
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Iridium IX technology offers excellent resistance to electrode wear.
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Helps support smooth engine operation and responsive acceleration in compatible engines.
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Trivalent metal-plated shells provide corrosion resistance.
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Ceramic insulators offer effective electrical insulation and thermal performance.
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Built-in resistors help reduce electromagnetic interference.
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NGK heat range 8 for engines requiring this thermal specification.
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Factory-specified 0.9 mm electrode gap.
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12 mm thread diameter and 19 mm thread reach.
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Suitable for compatible engines requiring four spark plugs of the same model.
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Ideal for routine engine maintenance and ignition system replacement.
Specifications Table
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Specification
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Details
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Brand
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NGK
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Product Series
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Iridium IX
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Model
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CR8EHIX-9
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Stock Number
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3797
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Product Type
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Iridium Spark Plug Set
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Quantity
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4 Spark Plugs
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Center Electrode Material
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Iridium
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Center Electrode Design
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Fine Wire
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Ground Electrode Material
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Nickel Alloy
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Thread Diameter
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12 mm
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Thread Pitch
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1.25 mm
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Thread Reach
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19 mm
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Hex Size
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16 mm
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Electrode Gap
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0.9 mm
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Heat Range
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8
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Resistor Type
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Built-In Resistor
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Seat Type
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Gasket
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Terminal Type
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Solid
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Application
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Compatible Motorcycle and Powersports Engines
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Package Contents
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4 NGK CR8EHIX-9 Iridium IX Spark Plugs
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