Spark PlugCross Reference
AUTOLITE 666
Compare interchangeable spark plugs for {brand} {part}. Check heat range, electrode gap, thread size, and reach before substituting — not all cross-referenced plugs perform the same in every engine.
177 matches found
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⚠ Important: Before substituting, confirm: same heat range, matching electrode gap, correct thread reach, and compatible resistor type.
ACCEL
5 matchesACDELCO
11 matchesATLAS
3 matchesBECK ARNLEY
2 matchesBOSCH
28 matchesHGR9BQI(Pt-IR FUSION)199 total matches7987160 total matches7988160 total matches242225566124 total matches242225641124 total matchesHR10DCY124 total matchesHR9APX85 total matchesHR9BCY77 total matchesHR10BCY66 total matchesHR9BPY66 total matches0 242 219 51153 total matchesHR10BCZ51 total matchesHR8BCY50 total matchesHR9BCZ47 total matchesH8BPY46 total matchesWA125TR40X46 total matches0 242 225 64145 total matches0 242 225 53242 total matches0 241 225 55541 total matchesHR9BY32 total matchesHR10BY24 total matchesWA145TR40X9 total matches75767 total matches75776 total matches75876 total matches75886 total matches79766 total matchesWA95TR40X66 total matches
CHAMP STK
5 matchesCHAMPION
27 matches7018(Double-Pt)199 total matchesRV15YC6145 total matches79C2125 total matchesRV12YC669 total matchesRV17YC667 total matches7958 total matches37C257 total matches79CC52 total matchesRBL11Y-650 total matchesRBL13Y644 total matchesRV15YC839 total matches407938 total matchesRBL15Y636 total matches402535 total matchesRBL17Y635 total matches3728 total matchesRV19YC627 total matchesRBL15Y823 total matches203721 total matches207917 total matches1712 total matches24165 total matches4165 total matches815 total matches4334 total matches484 total matches514 total matches
DELPHI
4 matchesDENSO
16 matchesITF16252 total matches2677000660200 total matches5330181 total matchesT16PR15124 total matchesT16PR-U15117 total matchesT14PR-U15103 total matchesT16U-1549 total matches067700577046 total matchesT16PR-U2046 total matchesT20PR1546 total matches502743 total matches502127 total matches502814 total matchesTR14PR-U159 total matchesTR16PR-U155 total matchesTR20PR-U155 total matches
DENSO STK
2 matchesGM OEM NR
3 matchesMIGHTY
3 matchesMOPAR
3 matchesMTRCRFT PN
16 matchesASF42C73 total matchesASF52C-758 total matchesARF42-649 total matchesASF42C-746 total matchesARF62-634 total matchesASF32C-634 total matchesASF42C-632 total matchesASF52-632 total matchesARF32-630 total matchesARF52-629 total matchesARF52-825 total matches4434 total matchesASF42-64 total matchesSP-4434 total matches6263 total matchesSP-4263 total matches
MTRCRFT STK
2 matchesNAPA
4 matchesNGK
16 matchesUR45178 total matches694588 total matchesUR5582 total matchesBPR4FS-1563 total matches272756 total matchesBPR5FS-1553 total matchesBR5FS-1545 total matches312440 total matchesUR4037 total matches224823 total matchesBPR6FS-1520 total matchesBPR4FS-2016 total matches695011 total matches245110 total matches438610 total matches20966 total matches
NGK STK
3 matchesPRECISIONTUNE
3 matchesPRESTOLITE
9 matchesSPLITFIRE
3 matchesTORCH
1 matchesVALLEY FORGE
5 matchesWESTERNAUTO
3 matchesFactory Direct
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