FR5BHX NGK Ruthenium HX Spark Plug, 1-pk v410296-v410295-v410294-v410293-v408805-v408806-v408807-v409071-v409072-v409073-v409074-v409075-v409076-v409077-v409078-v409079-v409080-v409081-v409197-v409198-v409199-v409404-v409412-v409413-v409414 1976 Cadillac DeVille 1961

1976 Cadillac DeVille 1961

1980 Plymouth PB100 Van 1974 Plymouth PB150 1981

leaks and wear

1997 GMC C2500 Suburban 1999 GMC C3500 1990

1986 Jeep Scrambler 1983

FR5BHX NGK Ruthenium HX Spark Plug, 1-pk v410296-v410295-v410294-v410293-v408805-v408806-v408807-v409071-v409072-v409073-v409074-v409075-v409076-v409077-v409078-v409079-v409080-v409081-v409197-v409198-v409199-v409404-v409412-v409413-v409414 1976 Cadillac DeVille 1961NGK Ruthenium HX Spark Plugs provide maximum durability and performance where greater ignition efficiency is demanded Patented high ignitability DFE and PSPE tip designs provide the most efficient and complete fuel burn of any aftermarket plug, resulting in quicker throttle response, smoother idle and better cold starts Alloy technology provides superior oxidation resistance, delivering unparalleled durability and outstanding service life Includes 1