Hello,

It's time to replace the spark plugs and injection coils. Recent oil change and air filters on the way. What are the best cool and injector combination to replace stock parts? I was planning on going with the highest reviewed ones on Amazon. What do you think?

Appreciate it,
Karl

 

For sparks plugs, I recommend NGK or Bosch.

 

What about the injection coils? There are several options including POCYBER($84.00), Bosch$145.00), etc. (other brands). The Bosch are the more expensive set than the other options. Any experience with the other brands? I really don't want a coil or plug to fail in a year.

 

Short summary: Only 3 types of ignition coils can be used in N43/N53 series engines:

a. BMW 12137559842

b. Bosch 0 221 504 471

c. Delphi GN10476-12B1

 

Based on the OPs signature I would say they have an N54.

 

Bosch have been working well for me but I don't have many miles on the replacements yet. That Bosch price is too high. You can get them from FCP with a lifetime warranty for quite a bit less: https://www.fcpeuro.com/products/bmw...-12131712219x6

Definitely go with an OE or OEM brand like Bosch or Delphi.

 

Agreed. I replaced my plugs and coils with Bosch parts (ZGR6STE2) in my N54 at 185,000km (115,000 miles) and everything is still running smooth at 255,000km (160,000 miles). I've had a couple injectors go bad - but I've been replacing them with used ones in sets of three because decent replacements are so expensive new.