Best Spark Plugs for 04 TrailBlazer EXT LS

15

Asked by Oct 14, 2014 at 06:48 AM about the 2004 Chevrolet TrailBlazer EXT LS RWD

Question type: Maintenance & Repair

Is the AC Delco Iridium Spark Plug #41-103 the best one out there for the 04 TrailBlazer EXT LS? Is there others that are just as good?

5 Answers

264,265

I like NGK's, do you have the 4.2L or 5.3L engine? I can't tell based on trim level. But any iridium will do and you won't have to change the plugs for a long time.

2 of 2 people found this helpful.
15

I have a 4.2L engine.

1 of 1 people found this helpful.

Tom is right. Iridium spark plugs are superior in life-span and performance

1 of 1 people found this helpful.
264,265

www.rockauto.com, specifies NGK #4344 with a gap of .050

I have a 2004 trailblazer LT i will like to know what plugs are good for my motor 4.2 liter

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