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        Search for cross reference part numbers for other manufacturers of the parts you're looking for.

        Cross Reference information is provided as a guide only. Please refer to the "Applications" lookup tabs for more detail. Materials and designs will differ among brands, so plugs are not exactly alike. Always check with your OE service manual for proper installation and settings.

        CYLINDER HEAD MANUFACTURERSPECIFICATION SHEET RECOMMENDATIONDENSO IRIDIUM POWER EQUIVALENT
        AFR AIR FLOW RESEARCH

        225cc LS1 Mongoose Strip Head

        180cc SBC Street Head

        180cc LT1 Street Head

        195cc SBC Street Head

        195cc LT4 Street Head

        305/315/325/335/345/357cc Magnum BBC

        165/185cc SBF Outlaw Street Heads

        205/224cc SBF Outlaw Race Heads

        165/185cc SBF Street/Strip Outlaw Heads

        AC 41-974 Platinum

        AC 41-974 Platinum

        AC FR3LS

        AC FR3LS

        AC FR3LS

        AC FR3LS

        CH C59C, Autolite 3932

        Autolite 3924

        Autolite 3922

        Autolite 3924

        IT16

        IT16

        IK16

        IK16

        IK16

        IK16

        IK27

        IK16

        IK22

        IK16

         BRODIX

        BBC, Big Brodie series

        C.A.R.B. legal Heads

        NGK B9ES

        Ch14YC or AL3924 

        IW24 gas, IW27 alcohol

        IK16

         DART

        Big Chief, ALL

        Big M – Head

        FORD 20 Degree

        Iron Eagle, 308cc & 345 cc BBC

         

        Iron Eagle, 23 Degree, 180, 200, 215, 230cc SBC

        Iron Eagle S/S

         

        Little Chief, 11degree SBC head

        Pro 1, 23 Degree SBC & BBC all cc’s

        Race Series, 220cc SBC Head

        Race Series, 18 Degree BBC head

        .750” reach, gasket, Ch C57C/C57YC

        .750” reach, gasket, Ch C59C /C59YC Street RC12YC

        .750” reach, gasket, Ch C59C/C59YC

        .750” reach, gasket, Ch C59C /C59YC Street RC12YC

        Angle or straight, .460 reach, tapered seat, Ch V59C / V59YC

        Straight, .460” reach tapered seat Ch RV12YC / AC R44TS

        Ch C57C / C57YC

        Ch C59C / C59YC

        Ch C59C / C59YC

        Ch C57C / C57YC

        IK31, IK01-31

        IK27, Street app IK16

        IK27

        IK27, Street app IK16

        ITF27

        ITF16

         

        IK31, IK01-31

        IK27, IK01-27

        IK27, IK01-27

        IK31, IK01-31

         EDELBROCK

        All except flathead 

         FORD RACING PERFORMANCE PARTS

        GT-40 “Turbo-Swirl” Alum. Cyl. Heads

        GT-40X “Turbo-Swirl” Alum Cyl. Heads

        “Sportsman” Short Track Cast Iron Cyl. Heads

        “Z” Aluminum Head

        Robert Yates Alum. Cyl. Heads

        “High Port” Yates Head

        High Port Head for all out Performance

        Super Cobra Jet Cylinder Heads

        IK20

        IK20

        ITF20

        IQ16

        IW SERIES

        IW SERIES

        IW SERIES

        IK20

         PRO TOPLINE

        Iron Lightning, Pro Lightning

        Other

        Ch V55C, V57C

        CH C55C, C57C

        ITF24

        IK31

         TRICK FLOW

        Track Heat Alum. Cyl, heads for SB Ford

        18 Degree Alum. Heads for SB Chevy

        23 Degree Alum. Heads for SB Chevy

        R-Series cyl. Head for BB Chevy

        AC-FR3LS, Autolite- 3924, NGK 7373

        Ch C57C, AL 3932, NGK R5671A-10

        AC-FR3LS, Autolite- 324, NGK FR5, Ch -RC

        Autolite-3922

        IK16

        IK31

        IK16, IK20

        IK22

         WORLD

        Windsor Jr

        Windsor Jr. Lite

        Windsor Sr. Lite

        Roush 200 Cast Iron

        Torquer 440, Aluminum

        Sportsman II Lite

        S/R

        S/R Torquer

        Sportsman II

        MOTOWN 205/220

        MOTOWN 220 Lite

        MERLIN II OVAL & RECT. PORT

        320cc & 345cc MERLIN

        ITF20, ITF22

        IK16, IK20

        IK16, IK20

        ITF20, ITF22

        IK24, IK31

        IK16, IK20

        ITF16, ITF20

        ITF16, ITF20

        ITF16, ITF20

        ITF16, ITF20

        IK16, IK20

        ITF16, ITF20

        IK16, IK20