Reviews of AC DELCO parts For Business

GM products run best with AC Delco plugs, just like Ford products run best with Motorcraft or Autolite.

I did put ac delco factory iridium plugs from rockauto on mine at 100k.

The old battery I had in mine was an AC Delco, model ACD41-60 (I'm guessing size 41, 60-month warranty). Sticker said 685 CCA, 330 for charge. It's raining outside right now and I don't have any pictures of the sticker for my current one. The Delco battery finally died after being 8 years old. It showed signs of aging and being weak for about 3 months before that, and then one of the cells shorted out, so it had about a 5-amp capacity.

In our shop we have found that the professional line of AC-Delco batteries seem to last the longest. I believe if you check the AC-Delco was what was installed at the factory in your Suzuki, and that lasted 7 years.

I'm a big fan of AC Delco batteries. Every one I've had has outlived the cars I've put them in.

While I had the coils out, I replaced the plugs (used ACDelco double platinum professional grade, proper gap. No NGKs were available). After I replaced the coils, the misfire code(s) went away for a few days.

But the best OEM batteries are definitely AC Delco, the GM ones. Routinely replaced them at 6-8 years, longest I ever saw was the original battery of a 97 Grand Prix that I replaced in early 2008.

So I went to my uncle who is a part owner of a auto parts supply company and he ordered me 5 Beck Arnley 178-8445 Direct Ignition Coils for my car and 5 ACDelco 41-806 Professional Platinum Spark plugs.

Another good way to tell your alternator is going is the battery light illumination. I noticed as I drove to higher RPM's, used the vents or even used windows with more power gave more illumination of the battery light. Tested the alternator at a shop and found it to be weak, battery was fine.

Put them into a stock '87 Subarban and tore my hair out thinking I messed up the wires 'cause it idled so bad. Really, like I had two wires switched. Put the old worn regular AC's that I just took out and it idled perfect.