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COBB spark plugs for Subaru WRX, STI, Legacy GT, and FXT 2.5L — supplied as a four-pack and sold only with Cobb power packages. These plugs are specified to be used alongside Cobb power upgrade kits and are intended to match the ignition requirements outlined in those packages. Purchase is restricted to inclusion with compatible Cobb power package orders per the product note.
Cobb Subaru WRX/STI/Legacy GT/FXT 2.5L Spark Plugs 4pk (Must Be Purchased w/Power Packages ONLY)
