MSD Performance 3731 Spark Plug, 11IR4Y, Single

Iridium Tip Spark Plug; Single; Plug Type 11IR4Y; [Available While Supplies Last];

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MSD iridium spark plugs will fire up your engine for optimum performance. These plugs have been engineered from the inside out for efficient combustion to create the most power possible for your setup. MSD's proprietary design features center tips made from iridium--a super hard material that promotes the best spark as well as increased resilience. They also feature copper center cores, special ceramic material to enhance the dielectric strength of the plug housing, and machine-ground straps enhanced with Yttrium to handle the heat of your high horsepower ignition. On the street, at the track, or up and over the trails, MSD iridium spark plugs will outperform and outlive the competition.

• Proprietary Ceramic Formula
• Unique Insulator Design
• Yttrium Copper Core
• Machined Electrode
• 1mm Iridium Tip
• Outlast Performance Plugs
• Improves Comprehensive Drivability And Economy
• Superior Design

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Application Summary:

Year	Make/Model
1963	American Motors Ambassador
1965-1974	American Motors Ambassador
1964-1968	American Motors American
1968-1970	American Motors AMX
1978-1979	American Motors AMX
1964-1965	American Motors Classic
1978-1979	American Motors Concord
1970-1977	American Motors Gremlin
1970-1977	American Motors Hornet
1968-1974	American Motors Javelin
1965-1967	American Motors Marlin
1971-1978	American Motors Matador
1975-1979	American Motors Pacer
1969	American Motors Rambler
1967-1970	American Motors Rebel
1979	American Motors Spirit
1987-1988	Buick Skyhawk
1968-1969	Buick Skylark
1968-1969	Buick Special
1968-1976	Cadillac Calais
1975-1984	Cadillac Commercial Chassis
1975-1981	Cadillac DeVille
1968-1978	Cadillac Eldorado
1980-1981	Cadillac Eldorado
1968-1984	Cadillac Fleetwood
1980-1981	Cadillac Seville
1968-1969	Checker Marathon
1958-1961	Chevrolet Bel Air
1963-1969	Chevrolet Bel Air
1958-1961	Chevrolet Biscayne
1963-1969	Chevrolet Biscayne
1969	Chevrolet Blazer
1969	Chevrolet Brookwood
1963-1969	Chevrolet C10 Pickup
1968-1969	Chevrolet C10 Suburban
1963-1969	Chevrolet C20 Pickup
1968-1969	Chevrolet C20 Suburban
1963-1969	Chevrolet C30 Pickup
1967-1969	Chevrolet Camaro
1980-1981	Chevrolet Camaro
1995-1999	Chevrolet Camaro
1967-1969	Chevrolet Caprice
1964-1969	Chevrolet Chevelle
1962-1968	Chevrolet Chevy II
1959-1960	Chevrolet El Camino
1964-1969	Chevrolet El Camino
1964-1969	Chevrolet G10 Van
1967-1969	Chevrolet G20 Van
1959-1961	Chevrolet Impala
1963-1969	Chevrolet Impala
1964-1967	Chevrolet P10 Series
1968-1969	Chevrolet P10 Van
1967	Chevrolet P20 Series
1967	Chevrolet P30 Series
1963-1966	Chevrolet Suburban
1955-1958	Chrysler 300
1993-1996	Chrysler Concorde
1975-1983	Chrysler Cordoba
1984-1993	Chrysler Daytona
1988-1993	Chrysler Dynasty
1983-1984	Chrysler E Class
1983-1989	Chrysler Fifth Avenue
2000	Chrysler Grand Voyager
1957-1958	Chrysler Imperial
1981-1982	Chrysler Imperial
1990-1993	Chrysler Imperial