4.5L ACDelco Spark Plug Question
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HT4100 4.1, 4.5, 4.9 Discussion, 4.5L ACDelco Spark Plug Question in Cadillac Engine Discussion; Hi all !!! Just went to Autozone to get Plugs for my '90 Deville 4.5L . When I asked for ...
  1. #1
    ozzy21236 is offline Cadillac Owners Member
    Automobile(s): 1990 Sedan DeVille
    Join Date
    Apr 2012
    Age
    49
    Posts
    7

    4.5L ACDelco Spark Plug Question

    Hi all !!!
    Just went to Autozone to get Plugs for my '90 Deville 4.5L .
    When I asked for part #R44LTS6 , they gave me R44LTSM and when I questioned it the employee said they were correct . So I want to ask here ,are they correct ?
    Thanks for your replies.

    Russ


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  3. #2
    Edahall's Avatar
    Edahall is offline Cadillac Owners Enthusiast
    Automobile(s): 93 & 88 Allante, 88 Eldorado
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    Jan 2004
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    Re: 4.5L ACDelco Spark Plug Question

    I checked RockAuto.com and they specify R44LTS6 for your car.

    Tip: Changing spark plugs is quite tedious on this car so you might think of installing longer lasting Platinum spark plugs such as ACDelco #41936.

  4. #3
    ozzy21236 is offline Cadillac Owners Member
    Automobile(s): 1990 Sedan DeVille
    Join Date
    Apr 2012
    Age
    49
    Posts
    7
    Thread Starter

    Re: 4.5L ACDelco Spark Plug Question

    Quote Originally Posted by Edahall View Post
    I checked RockAuto.com and they specify R44LTS6 for your car.

    Tip: Changing spark plugs is quite tedious on this car so you might think of installing longer lasting Platinum spark plugs such as ACDelco #41936.
    Thank you Edahall for your reply.

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