GMC Yukon XL Spark Plug Replacement

Gap: .040/1.0mm Enhanced Tapered Ground Electrode w/ Platinum Chip

Gap 0.040"

Gap 0.040in OE Type ; Plug Type RES14WMPB4

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

Gap 0.040"

Gap 0.040 DENSO is O.E. Manufacturer / Iridium Long Life Plug - Patented Iridium Alloy Plug (90% Ir) with Platinum Ground Strap OE

Gap 0.040" OE Equivalent Design 97,500 mi OE Mfr Recommended Service Interval

GM Original Equipment Iridium; Original Equipment; GAP .040; GAP PRE-SET AT FACTORY, DO NOT RE-GAP

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"

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