A-21A866 Autolite Spark Plug PN: 21A866

This is a A-21A866 Autolite Spark Plug PN: 21A866Main Description As Following : A-21A866 Autolite Spark Plug P.N: 21A866 Dim A (1): Autolite 405Dim B (2): 14mm ThreadDim C (3): 3/4" ReachDim D (4): 13/16" Hex ShoulderReplaces: N8 Replaces: A-AGS4C FORD , A-AG5 FORD , A-C3PF12405AB FORD , A-405 MISCELLANEOUS , Crossed From: BR4ES NGK , BR5EB NGK , BR5ES NGK , BR5ES-11 NGK , B4ES NGK , M4G4 MIGHTY , N8 MISCELLANEOUS , RN5C CHAMPION , R44XL DELCO , R45XL DELCO , R46XL DELCO , SM040D SPLIT-FIRE , W8CC BOSCH , X561 , , X961 , , 176-5112 BECK/ARNLEY Found in Section & Models : Ignition & Electrical Parts > Engine Related Parts, (Miscellaneous) (UNDEFINED): SEVERAL, Shop Supply > Spark Plugs, (Miscellaneous) (UNDEFINED): SEVERAL Associated Items : New Also This is An Aftermarket Product And : Dim A (1): Autolite 405 Dim B (2): 14mm Thread Dim C (3): 3/4" Reach Dim D (4): 13/16" Hex Shoulder Replaces: N8