Audi 100 Quattro Spark Plug Replacement

with Multiple Ground Electrodes Gap 0.040in OE Type ; Plug Type RC10DMC

Resistor Type Gap 0.032in ; Plug Type RN9YC

Non-Resistor Type Gap 0.032in ; Plug Type N9YC

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

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

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

Gap 0.040in; Plug Type RC12PMC4

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

W7DC - Optional

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

WR7DC - Optional

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

Gap 0.032in; Plug Type RN9PYP

Gap 0.040 O.E. Recommended Resistor Plug

Gap 0.040" OE Equivalent Design 30,000 mi OE Mfr Recommended Service Interval

Gap 0.040in; Plug Type RC10PLPB4

Gap 0.032in; Plug Type RN8WYPB3

Gap 0.040in; Plug Type RC10WMPB4

Gap .040 (in)

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

Gap 0.032 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 0.040 Iridium TT - Ultimate Endurance and Power, 0.4mm Iridium and 0.7mm Platinum Twin-Tip Technology

W7DSR - Optional