S5 B9 Spark Plug Question

[b1unt3d]

Does anyone know which spark plug is used for cylinder 6?

[ccssid]

is this what you are looking for ?

Correct. Cylinder #1 is ALWAYS at the front of the engine. For the 12V V6, #1 is on the right...
side (passenger), with #2 and #3 following on the same side. Cylinder #4 is located at the front, on the left side (driver's side) of the engine, followed by #5 and #6. The firing order per the Bentley manual (and the label on the coil pack) is 1-4-3-6-2-5. TDC means #1 is at TDC. Since there are 6 cylinders, each piston is positioned at 60 degree intervals (360/6 = 60). So, the exhaust cam lobe for #1 should be approaching the exhaust valve lifter when #1 piston is at TDC.