BMW 528e Spark Plug Replacement

Gap 0.028in OE Type ; Plug Type RN12MC4

Gap 0.028in OE Type ; Plug Type RN14YC

Gap 0.032 O.E. Recommended Resistor Plug with Patented U-Groove Design

Original Center Electrode Material is Copper/Nickel Gap 0.028 in

Gap 0.028" OE Equivalent Design

Original Center Electrode Material is Copper/Nickel Do Not Gap, Gap is Preset

Bosch WR 9LS

Bosch W 8 LCR

Gap 0.040 Platinum TT - Twin-Tip Technology Design with Platinum Center Electrode and Titanium Enhanced Ground Strap

Gap 0.028in; Plug Type RN14PYP

Bosch WR 9LS

Bosch WR 9LS

Gap 0.044 Double Platinum Plug - Extra Long Life Double Platinum Plug with Platinum Ground Strap

Bosch WR 9LS

Gap 0.044 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)

Gap 0.040 Iridium TT - Ultimate Endurance and Power, 0.4mm Iridium and 0.7mm Platinum Twin-Tip Technology