spark plug ?
Thread Starter
Senior Member
Joined: Nov 2001
Posts: 692
Likes: 1
From: Orlando,Fl. USA
Car: 1990 GTA
Engine: 5.7 T.P.I.
Transmission: 700r4
Axle/Gears: 3:23
spark plug ?
What is the difference between an R45TS and a CR45TS ? I just got some plugs for my car (1990 5.7) and they sold me the CR45TS, I asked why they had the C on them and the guy had no clue. Which did not surprise me since after asking what engine I had he then asked if I needed 6 plugs
. I have always used R45TS, should I just take them back, or is there no difference?
. I have always used R45TS, should I just take them back, or is there no difference? 
Supreme Member
Joined: Jul 1999
Posts: 5,183
Likes: 42
From: Oakdale, Ca
Car: 89 IrocZ
Engine: L98-ish
Transmission: 700R4
I can't answer for ya, but I recall on the ACDelco website, all sparkplug info was listed.
Edit:
Here ya go, looks like the C" is for commercial.
http://www.acdelco.com/html/pi_plugs_ident.htm
Edit:
Here ya go, looks like the C" is for commercial.
http://www.acdelco.com/html/pi_plugs_ident.htm
Last edited by 8Mike9; Dec 29, 2003 at 11:39 AM.
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