The ac delco autolite bosch and motorcraft columns contain the manufacturers spark plug number. Check for correct application and specmeasurements.
Spark Plugs Bmw R51 3 R 51 3 1954
Autolite cross reference to ngk. Ac delco contd ac delco contd autolite contd competitor to ngk interchange cross reference chart refers to the best cross reference réfère à la meilleure référence dinter change r45ts 6630 ur4 s43xl 5122 br7es 54 7333 bp6es r45ts8 6945 ur45 s43xlr 5122 br7es 55 7832 bp5es r45tsx 6945 ur45 s44 3510 b6s 56 7832 bp5es. Ngk part finder spark plug cross ref. Cross references are provided as a guide only. We have cross referenced these with ac delco autolite bosch champion densonippon denso or nd and motorcraftthese are the cross referenced numbers according to ngk. Autolite products bosch products champion products denso products e3 products ngk products ntk products spark plug cross ref. 212012 101103 am.
Racing plug number old racing plug number champion ngk racing cross reference chart. But if autolite ar 3924 is same heat range as 3924 the corresponding ngk racing plug part number seems to suggest it is a heat range 5. Autolite technical. The spark plug cross references are for general reference only. Any use of this cross reference is done at the installers risk. Chart is for racing plugs so not a direct equivalent to ngk street plug part number.