1765263, 3924, 41-602, 41-629, 41-800, 71, 71CC, 71ECO, 739 51043 136, 739 51043, 7390, AR3924, BKR 5 EY, BKR5EY, E3.48, GRP32, IK16TT, NGK7390, PK16TT, SP-406, T07900037, XS3924DP, XST3924DP. Engineered specifically for OE applications, the special V-cut nickel alloy center electrode and concave ground electrode of NGK's V-Power spark plug increases ignitability providing quicker starts and smoother idle.