HKS M40X - Alternative spark plugs

There are 2 replacement spark plugs for HKS M40X. The cross references are for general reference only, please check for correct specifications and measurements for your application. When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include Amazon Associates.

hks M40X on Amazon
HKS 50003-M40X Super Fire Racing Spark Plug (M40X), 1 Pack
HKS 50003-M40X Super Fire Racing Spark Plug (M40X), 1 Pack
419.27$

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When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network and Amazon Associates.

Replacement spark plugs for Hks M40X on Amazon

Replacement spark plugs for Hks M40X on Ebay

The spark plug Cross References are for general reference only. Check for correct application and spec/measurements. Any use of this cross reference is done at the installers risk.

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