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NGK R7436-9 / R74369 / 4899 Racing Spark Plug Replaces IQ01-27 To withstand the severe conditions that occur in racing engines, NGK Racing Spark Plugs feature electrode materials & configurations as follows: Electrode materials
- Many use precious metals such as platinum or gold/palladium for greater durability & lower voltage requirements. Electrode configurations
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- Special configurations are used for the insulator noses to improve throttle response.BOX DIMENSIONSHeight (mm): 85 Width (mm): 24 Length (mm): 22 If you are unsure as to whether this is the correct part for your vehicle, please don't hesitate to contact us. Alternatively please use the cross reference table above.

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NGK R7437-10 / R743710 / 4655 Racing Spark Plug Genuine NGK Component To withstand the severe conditions that occur in racing engines, NGK Racing Spark Plugs feature electrode materials & configurations as follows: Electrode materials
- Many use precious metals such as platinum or gold/palladium for greater durability & lower voltage requirements. Electrode configurations
- Fine-wire center electrodes provide better sparking & enhanced ignitability. Fine-wire ground electrodes further improve the ignitability of the plug. Insulator configurations
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NGK R7437-8 / R74378 / 4901 Racing Spark Plug Replaces IKH24 To withstand the severe conditions that occur in racing engines, NGK Racing Spark Plugs feature electrode materials & configurations as follows: Electrode materials
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- Fine-wire center electrodes provide better sparking & enhanced ignitability. Fine-wire ground electrodes further improve the ignitability of the plug. Insulator configurations
- Special configurations are used for the insulator noses to improve throttle response. BOX

Dimensions Height (mm): 85 Width (mm): 24 Length (mm): 22 If you are unsure as to whether this is the correct part for your vehicle, please don't hesitate to contact us. Alternatively please use the cross reference table above.

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NGK R7437-9 / R74379 / 4654 Racing Spark Plug Replaces IKH27 To withstand the severe conditions that occur in racing engines, NGK Racing Spark Plugs feature electrode materials & configurations as follows: Electrode materials
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- Special configurations are used for the insulator noses to improve throttle response.BOX DIMENSIONSHeight (mm): 85 Width (mm): 24 Length (mm): 22 If you are unsure as to whether this is the correct part for your vehicle, please don't hesitate to contact us. Alternatively please use the cross reference table above.

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NGK R7438-8 / R74388 / 4905 Racing Spark Plug Replaces IKH01-24 To withstand the severe conditions that occur in racing engines, NGK Racing Spark Plugs feature electrode materials & configurations as follows: Electrode materials
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- Special configurations are used for the insulator noses to improve throttle response.BOX DIMENSIONSHeight (mm): 95 Width (mm): 24 Length (mm): 22 If you are unsure as to whether this is the correct part for your vehicle, please don't hesitate to contact us. Alternatively please use the cross reference table above.

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NGK R7440B-10T / R7440B10T / 5009 Racing Spark Plug Genuine NGK Component To withstand the severe conditions that occur in racing engines, NGK Racing Spark Plugs feature electrode materials & configurations as follows: Electrode materials
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- Special configurations are used for the insulator noses to improve throttle response.BOX DIMENSIONSHeight (mm): 95 Width (mm): 24 Length (mm): 22 If you are unsure as to whether this is the correct part for your vehicle, please don't hesitate to contact us. Alternatively please use the cross reference table above.

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NGK R7440B-11T / R7440B11T / 5495 Racing Spark Plug Genuine NGK Component To withstand the severe conditions that occur in racing engines, NGK Racing Spark Plugs feature electrode materials & configurations as follows: Electrode materials
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NGK R7438-9 4656 Spark Plug Racing R74389

NGK R7438-9 / R74389 / 4656 Racing Spark Plug Replaces IKH01-27 To withstand the severe conditions that occur in racing engines, NGK Racing Spark Plugs feature electrode materials and configurations as follows: Electrode materials - Many use precious metals such as platinum or gold/palladium for greater durability and lower voltage requirements. Electrode configurations - Fine-wire center electrodes provide better sparking and enhanced ignitability. Fine-wire ground electrodes further improve the ignitability of the plug. Insulator configurations - Special configurations are used for the insulator noses to improve throttle response.BOX DIMENSIONSHeight (mm): 85Width (mm): 24Length (mm): 22 If you are unsure as to whether this is the correct part for your vehicle, please don't hesitate to
contact us. Alternatively please use the cross reference table above.

Availability: In Stock
Supplier: The Green Spark Plug Company
SKU: R7438-9-GS

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Product Description

NGK R7438-9 / R74389 / 4656 Racing Spark Plug Replaces IKH01-27 To withstand the severe conditions that occur in racing engines, NGK Racing Spark Plugs feature electrode materials & configurations as follows: Electrode materials
- Many use precious metals such as platinum or gold/palladium for greater durability & lower voltage requirements. Electrode configurations
- Fine-wire center electrodes provide better sparking & enhanced ignitability. Fine-wire ground electrodes further improve the ignitability of the plug. Insulator configurations
- Special configurations are used for the insulator noses to improve throttle response.BOX DIMENSIONSHeight (mm): 85 Width (mm): 24 Length (mm): 22 If you are unsure as to whether this is the correct part for your vehicle, please don't hesitate to contact us. Alternatively please use the cross reference table above.