O.E. Recommended Resistor Plug With Patented U-Groove Design
BOSCH Part # 4216
PLATINUM (#WR7DP)
GAP=0.025"
BOSCH Part # 7500
SUPER (#W7DC)
GAP=0.025"
DENSO Part # 5307
Iridium Power (#IW22)
Iridium Power Performance Upgrade With World's Smallest Center Electrode (0.4 mm Dia.) & Tapered Tip Patented U-Groove Design & Patented Ir Alloy (90% Ir)