Denso U-Groove Traditional Spark Plug Stock Heat Range 3381 Subaru WRX 2006-2014 / STI 2004+

Denso
DEN K20HR-U11
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Spark Plugs and Plasma Coils

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Part #: DEN K20HR-U11

This innovative Denso 3381 Spark Plug comes equipped with Denso’s patented U-shaped ground electrode. The U-Groove forms a channel for the spark nucleus to form at the instant of ignition, which generates a more potent spark.

More importantly during regular service intervals it is wise to check your spark plugs for wear, because new spark plugs will ensure for a healthy running engine, increased fuel economy, and better response. These are the factory heat range spark plugs for your vehicle and should be a direct fitment.

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Denso U-Groove Traditional Spark Plug Stock Heat Range 3381 Subaru WRX 2006-2014 / STI 2004+
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