HKS Rotary Applications M-Series Spark Plugs Heat Range 10.5 - 50003-M525RE

Spark plugs, ignition wires, coil packs, ignition coils, and distributors are all essential parts that affect the performance of your car. Search from your favorite brands like NGK, Edelbrock, MSD Ignition, Bosch, HKS, and AEM Electronics, to give your car the proper ignition it needs.

Spark plugs are an essential part to keep your car running. It is recommended that your replace your spark plugs every 20,000 to 40,000 miles. If you are looking to increase the power of your car, you may need to get some spark plugs that run a step cooler than OEM.

In October 1973, two talented and spirited young engineers had a vision; to design and build high performance engines and components that major OE manufacturers could not or would not produce.

Led by Hiroyuki Hasegawa, a former engineer for Yamaha Motor Company, and his partner Mr.Kitagawa, the two secured a capital infusion from Sigma Automotive Co., Ltd. (hence the name "HKS"), and began tuning gasoline powered engines in a dairy-farming shed at the foot of Mount Fuji in Japan.

A year later, Mr. Hasegawa designed and built the first aftermarket turbocharger for passenger cars and has never looked back.

HKS pioneered the Japanese aftermarket performance industry by delivering a host of exciting new products, including the first commercially available electronic turbo timer and boost controller. Other early products included piggy-back fuel computers and sophisticated fuel management tools. Clearly HKS was Driving Performance trends for Japanese vehicles.

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