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Ignition coils are key to the efficiency and performance of your BMW. With a faulty coil the spark plug is not burning the air/fuel mixture properly and that can lead to problems anywhere in the engine and exhaust (including catalytic converters and O2 sensors). Problems with one or more coils will cause a fault code but not always a check engine light. A misfire code may be related to an ignition coil but could be from other things as well. Sometimes a visual inspection of a coil and coil boot will give an indication of a failure. You can also move coils around to different cylinder banks to see if the misfire code follows a suspect coil. We suggest always having one or two coils on hand to keep as spares.
This is the current replacement for some BMW 6 and 8-cylinder engines built in the late 2000s and after. BMW has made numerous changes to ignition coil part numbers in recent years but has approved this part number to work in the vehicles listed below. It's listed as a replacement coil for N20, N55, and S55 engines. In March 2015 BMW approved it for N51/N52 engines. This part number replaces the previous BMW part number 12137594937 for the cars listed below.
Sold per coil. Includes boot and connector.
Akrapovic doesn't disappoint in the sound and engineering of the F87 M2 Evolution exhaust. True to form, their downpipe-back system sounds exotic and beastly. It's a European supercar sound instead of American muscle. The Akrapovic Evolution exhaust is a straight pipe from the M2 downpipe to the rear muffler - no cats and no resonators to dampen the sound. The rear muffler incorporates two bypass valves to tailor the sound level to your needs. The whole system is made from ultra light weight titanium with carbon fiber tips.
Akrapovic M2 Evolution Exhaust Specs -
The Akrapovic system includes muffler valves for both outlets (the stock system only uses one on the driver side). A valve controller and wiring harness are included to operate both valves from the stock wiring. This allows you to preserve the stock operation of the valves in Comfort, Sport, and Sport+ modes. In addition, Akrapovic has their own optional sound controller that lets you open/close the valves from a key fob or phone app (iOS or Android).
An optional carbon fiber diffuser complements the carbon fiber Akrapovic exhaust tips. Not required for install, the carbon diffuser helps frame the rear exhaust tips and outlets and present a more muscular and athletic appearance.
The rear diffuser completes the look of the rear bumper and adds more presence and muscle to the aesthetics. The Akrapovic M2 rear diffuser is made from beautiful carbon fiber with a high gloss clearcoat. It fills in the gaps around the stock rear exhaust surround and is molded to fill the void between the exhaust tips.
While designed with the Akrapovic exhaust in mind, this M2 diffuser can be used with almost any stock or aftermarket exhaust.
Easy installation using stock hardware and reversible thanks to no modifications.