MINI COOPER 火花塞BKR6EQUP 定义

B = thread diameter = 14mm
K = hex size is 5/8", projected tip (ISO)
R = resistor type
6 = heat range (where 2 is hot, and 11 is cold)
E = thread reach is 19mm (3/4")
Q = quad, i.e., 4-ground electrode (i.e., 4 prongs)
U = firing-end construction is semi-surface discharge
P = center material is "premium platinum"