SparkPlugs.com is an online retailer of reputable automotive brands including Denso, NGK, Autolite, Champion, KYB and Bosch. SparkPlugs.com, along with its sister sites, has a strong focus on consumer education. Their websites include tools usable to everyone from the DIYer to engine builders, including a comprehensive cross reference, reverse fitment guide, and the ability to search for a part by dimensions. Their parent company, Monarch Products, Inc. opened in 1969 and is NGK's oldest US distributor.