I am absolutely glad that I got this fuel injector kit from FCP Euro because my CL63's engine definitely needed. After 12 years and 97K miles, the old injectors had a lot of gunk on them (wish I could upload a picture). My mechanic that changed them (who originally said BG fuel cleaner would be enough and no new injectors would be needed) was even surprised by how much gunk there was and how much more smoothly the engine idled and performed. For those that don't know, there are instances where the M156 fuel injectors will stick open and pour fuel into the engine which can hydrolock it. It's rare but this is a cheap insurance to protect the engine. I believe Mercedes wants about $70 per injector, at $30 per injector from FCP Euro this is a great deal.

Hit 60k miles on my M156 c63 and knew that my injectors were coming up. These were a perfect fit and the old injectors were well on their way out. Easy purchase and shipping!

Great value, perfect fitment, glad I replaced these as a maintenance item at 143k kms, old ones were filthy, car runs perfectly.

Mercedes Fuel Injector Kit- Bosch 1560780023 works fine, direct OEM replacement

Very pleased with them. They worked perfectly.

M156 installed in less than an hour and work flawless great deal