Ignition coil DELPHI or NGK

I replaced the spark plugs over the weekend, and I’m doing the ignition coils tomorrow replacing them with brand new Delphi’s.

I changed my ignition coils to delphi aftermarket ones and the idle is nice and smooth now. But the old ones had like 200k km on them.

That's the Delphi coil. It's the updated part from the original all black Bosch. It's the only one I put in my customer's cars.

Delphi is considered the go-to for N52 coils.

I've been running the NGK since I'm pretty sure they are the OE manufacturer. Subaru is charging crack prices for those coils.

My delphi has been running good for about 20k miles with ngk wires and plugs.

I installed ngk coils originally and they lasted the longest ( around 8k miles before the first one went ).

I don’t like the Delphi ones cause they come apart, if you do spark plugs again say 20k miles passes you could deal with the silicone tube on the end getting stuck down when pulling them, then you gotta be careful and get the spring and that out without the spring flying off somewhere.

The auto shop found out what the problem was as they had replaced two of the ignition coils with OEM and two from a company that produced the ignition coils for Mazda. The two from the company (Delphi) went bad. I have to use only parts from Mazda.

NGKs product quality has diminished but a brand new set of 6 in and 2 of the six aren't working after about 2 months