Smart Fortwo Spark Plug Replacement

2 Plugs Per Cylinder Required Gap 0.036in ; Plug Type RER8YC

Gap 0.036"

Gap 0.035 DENSO is O.E. Manufacturer / Resistor Plug OE

Gap 0.036" Actual OE Manufacturer

2 Plugs Per Cylinder Required Gap 0.036in ; Plug Type RER8WMPB

Gap 0.036"

Original Center Electrode Material is Iridium Do Not Gap, Gap is Preset

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

Gap 0.035 Iridium Power - Performance Upgrade with Worlds Smallest Center Electrode (0.4 mm Dia.) & Tapered Tip Patented U-Groove Design & Patented Ir Alloy (90% Ir)

Gap 0.036"

Gap 0.036"

Gap 0.028" Actual OE Manufacturer 30,000 mi OE Mfr Recommended Service Interval

Gap 0.032 Iridium Long Life - Patented Iridium Alloy Plug (90% Ir) with Platinum Ground Strap