Audi 4000 Spark Plug Replacement

Resistor Type Gap 0.028in ; Plug Type RN12YC

Non-Resistor Type Gap 0.028in OE Type ; Plug Type N11YC

Resistor Type Gap 0.028in OE Type ; Plug Type RN9YC

Non-Resistor Type Gap 0.028in OE Type ; Plug Type N9YC

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

Gap 0.028" OE Equivalent Design

Gap 0.028" OE Equivalent Design

Gap 0.028"

Gap 0.028"

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

with California Emissions System Original Center Electrode Material is Copper/Nickel Do Not Gap, Gap is Preset

Gap 0.028"

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

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

W7DC - Optional

Gap 0.028"

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 0.028in; Plug Type RN14PYP

Gap 0.032" OE Equivalent Design

Gap 0.032in; Plug Type RN8WYPB3

Gap 0.028"

Gap 0.028"

Gap 0.044 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 0.032 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