New to the forum, I have learned a lot from reading other people's posts, but am in need of some help.

Went and picked up some new ACDelco Plat sprak Plugs from O'Reilly's Auto. When i was taking the old ones out they had part # 41-932. The new ones I bought were part # 41-933. They appeared to be the same size and I didn't think much of it so I installed the new ones. My blazer has 125,00 miles on it. After replacing the plugs I thought the engine was ideling a little rough. I did a google search and found this info:

http://www.automotiveforums.com/t950..._plugs___.html

That says part # 41-932 was discontinued by ACDelco and replaced, but I cannot tell if it was replaced by part # 41-933 or 41-993.
I took another look at my receipt from O'Reilys and it lists part 41-993, but the plugs they gave me were 41-933. I've been driving the car for about a week now.
Do I need to pull the plugs and ask O'Reillys to give me the 41-993?

Removing the middle drivers side was a pain in the rear and I dread having to remove and replace that again.

Any advice would be greatly appreciated.

-Kyle

 

41-933 is not the correct plug for the Blazer engine. You should have used 41-993.