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          Autolite AR51 | Spark Plug

          Autolite Logo Small Spark Plugs, Ignition Wire Sets and Coil-on-Plug Boots
          Part Number
          AR51
          Autolite AR51 High Performance Racing Non-Resistor Spark Plug

          Fits: 59-61 Alfa Romeo Giulietta, 60-66 Ferrari 400 Superamerica, 60-64 Porsche Carrera, 61-67 Fiat 125, 63-64 Alfa Romeo Giulia Sprint, 64-65 Ferrari 250 LM, 64-68 Ferrari 275 GTB, 64-68 Ferrari 275 GTS, 64-65 Ferrari 275 LM, 64-68 Ferrari 330 GT, 67-68 Alfa Romeo Giulia Sprint, 65-67 Fiat 1500, 65 Porsche 911, 66-68 Ferrari 330 GTC, 66-68 Ferrari 330 GTS, 67 Alfa Romeo Duetto 1600, 67-71 Ferrari 365 GT, 68 Ferrari 275 GT, 68-74 Ferrari 365 GTB/4, 68-70 Ferrari 365 GTC, 68-70 Ferrari 365 GTS, 70-74 Ferrari 365 GTS/4, 70-73 Fiat 124, 71-72 Ferrari 365 GTC/4, 72-76 Ferrari 365 GT4, 74 Ferrari 365 GT4 BB, 82-89 Porsche 911, 91-92 Porsche 911
          $5.13
          ---------OR---------
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          Only 3 left
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          Estimated Ship Date: 1 Business Day or Less
          * Must be purchased in increments of 4
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          Description


          Autolite AR51 High Performance Racing Non-Resistor Spark Plug

          Autolite Racing® Hi-Performance Spark Plugs are the ultimate racing plug designed for performance and used by professional car drivers. Autolite® spark plugs are the best alternative to OE spark plugs, offering OE form, fit and function for all makes and models, both foreign and domestic, at a value price. Autolite provides the automotive aftermarket and original equipment manufacturers with the highest quality ignition products and is the leading supplier of spark plugs.


          Specifications


          Center Electrode Core Material:Copper
          Center Electrode Design:Standard / Regular
          Center Electrode Tip Material:Nickel
          Electrical Terminal Type:Stud
          Ground Electrode Core Material:Nickel
          Ground Electrode Quantity:1
          Ground Electrode Tip Design:Tapered
          Ground Electrode Tip Material:Nickel
          Hex Size:13/16"
          Hex Size:21
          Insulator Material:Ceramic
          Pre-Gap Size:0.60
          Pre-Gap Size:0.025
          Reach:19.5
          Reach:0.750
          Resistor Type:No
          Seat Type:Flat
          Thread Diameter:14.0


          Interchange


          • AC-Delco: 41XLS
          • Champion Spark Plug: 315
          • Denso: 3274
          • Motorcraft: AG092C
          • NGK: 2037


          Fitment


          • 1959-1961 Alfa Romeo Giulietta
          • 1961-1967 Fiat 125
          • 1964-1965 Ferrari 250 LM
          • 1964-1968 Ferrari 330 GT
          • 1967-1968 Alfa Romeo Giulia Sprint
          • 1965-1967 Fiat 1500
          • 1965 Porsche 911
          • 1968-1974 Ferrari 365 GTB/4
          • 1968-1970 Ferrari 365 GTC
          • 1968-1970 Ferrari 365 GTS
          • 1971-1972 Ferrari 365 GTC/4
          • 1972-1976 Ferrari 365 GT4
          • 1982-1989 Porsche 911
          • 1991-1992 Porsche 911
          • 1960-1966 Ferrari 400 Superamerica
          • 1960-1964 Porsche Carrera
          • 1963-1964 Alfa Romeo Giulia Sprint
          • 1964-1968 Ferrari 275 GTB
          • 1964-1968 Ferrari 275 GTS
          • 1964-1965 Ferrari 275 LM
          • 1966-1968 Ferrari 330 GTC
          • 1966-1968 Ferrari 330 GTS
          • 1967 Alfa Romeo Duetto 1600
          • 1967-1971 Ferrari 365 GT
          • 1968 Ferrari 275 GT
          • 1970-1974 Ferrari 365 GTS/4
          • 1970-1973 Fiat 124
          • 1974 Ferrari 365 GT4 BB


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