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This Sinister Diesel billet blue cap kit replaces brittle OEM plastic caps on 2003–2007 Ford 6.0L Powerstroke engines. CNC-machined from solid billet aluminum, the kit includes blue oil filler, fuel filter and oil filter caps—each tapped for 1/8" NPT where specified—and carries precision machining for reliable fitment. The caps resist cracking and add a durable, styled look under the hood.
Sinister Diesel 03-07 Ford 6.0L Billet Blue Cap Kit
