Spark PlugCross Reference
NGK 3951
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.
87 matches found
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⚠ Important: Before substituting, confirm: same heat range, matching electrode gap, correct thread reach, and compatible resistor type.
ACCEL
1 matchesACDELCO
34 matches41-60050 total matchesR42LTS644 total matchesR44LTS638 total matches4191337 total matches4193237 total matches41-60136 total matches4191936 total matches4190234 total matches4194230 total matches4192929 total matches4194329 total matches4194728 total matches41-60627 total matches4194027 total matchesR43LTSX27 total matches4193626 total matchesR44LTSM623 total matches4192122 total matchesR43LTS616 total matches1835108T2 total matches1835300T2 total matches1835318T2 total matches1835948T2 total matches1835974T2 total matches241-6062 total matches56138692 total matches56142832 total matches921418752 total matchesR44LTSK62 total matchesR45LTSK62 total matches2R44LTS61 total matches2R45LTS61 total matchesC R45LTS61 total matchesE 56142841 total matches
AUTOLITE
8 matchesBERU
3 matchesBOSCH
9 matchesBRIGGS & STRATTON
1 matchesBRISK
1 matchesCHAMPION
6 matchesDENSO
7 matchesE3
2 matchesFORD
2 matchesMOTORCRAFT
11 matchesMTRCRFT PN
2 matchesFactory Direct
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