and double iridium. The hex size, gap, and expected life of the products were also reviewed to find the best plugs for the vehicle. Additionally, the listed heat range for each spark plug was ...

The sexy aspects of modifying cars are focused on the first two elements: Double Pumper carburetors ... nothing will happen. Spark plugs are often overlooked, but for good reason.

BROADVIEW, Ill. (June 6, 2016) — Robert Bosch L.L.C. has expanded its OE Fine Wire Spark Plug series with its Double Iridium spark plug, which the firm said promotes longer service life up to four ...