Plugs for 4.9

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HT4100 4.1, 4.5, 4.9 Discussion, Plugs for 4.9 in Cadillac Engine Discussion; What plugs do you 4.9 owners(past or present) prefer to use?...
  1. #1
    vitobbc1 is offline Cadillac Owners Member
    Join Date
    Jul 2004

    Plugs for 4.9

    What plugs do you 4.9 owners(past or present) prefer to use?

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  3. #2
    Night Wolf's Avatar
    Night Wolf is offline Cadillac Owners 10000+ Posts
    Automobile(s): Unicycle
    Join Date
    Mar 2003
    Where I park it

    Re: Plugs for 4.9

    use AC Delco double platinum spec'ed for a '95 4.9

    I currently use Bosch +4, they seem fine.

  4. #3
    adalla is offline Cadillac Owners Fanatic
    Join Date
    May 2003

    Re: Plugs for 4.9

    I have made 140.000 miles with original regular ACDelco plugs. Car has been running just fine. You can buy them at Adavance Auto Parts for $16 a box (8 plugs). Replacing the plugs on 4.9 is not fun at all.

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