Mercedes-Benz SL55 AMG Spark Plug Replacement

2 Plugs Per Cylinder Required Gap 0.031in ; Plug Type REC10YC4

2 Plugs Per Cylinder Required; Auto

Dual Plug; 16 Req'd Gap 0.032"

Gap 0.044 Qty 2 Per Cyl. Resistor Plug with Patented U-Groove Design

Gap 0.040 Qty 2 Per Cyl. Platinum TT - Twin-Tip Technology Design with Platinum Center Electrode and Titanium Enhanced Ground Strap

2 Plugs Per Cylinder Required Gap 0.031in OE Type ; Plug Type REC8WYPB3

Dual Plug; 16 Req'd Gap 0.032"

2 Plugs Per Cylinder Required Gap 0.039in OE Type ; Plug Type REC10WYPB4

Gap 0.044 Qty 2 Per Cyl. 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 Qty 2 Per Cyl. Iridium TT - Ultimate Endurance and Power, 0.4mm Iridium and 0.7mm Platinum Twin-Tip Technology

Gap 0.044 Qty 2 Per Cyl. O.E. Recommended Iridium Long Life - Patented Iridium Alloy Plug (90% Ir) with Platinum Ground Strap

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

Dual Plug; 16 Req'd Gap 0.032"

Dual Plug; 16 Req'd Gap 0.032" Actual OE Manufacturer 100,000 mi OE Mfr Recommended Service Interval

Specially indexed spark plug. Do not use alternatives. Gap 0.028" Actual OE Manufacturer; OE Spark Plug Is High Ignitability. For Optimal Performance, Replace With High Ignitability Spark Plugs. 50,000 mi Factory Recommended Service Interval