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Thread: Spark plug question

  1. #1
    Join Date
    Dec 2005
    Location
    Klamath falls/keno Oregon
    Posts
    325

    Default Spark plug question

    Wife has a 2003 GMC 1/2 ton with a 323 V-8...manual says to use a 41-974, all the information
    Says this plug is no longer in use, and to use a 41-110...went to e-bay and the info provided says that plug won’t work
    On her truck..

    Thoughts?
    06 1ton 4X4 duramax/6speed ext.cab WT
    Hummer wheels :^)
    Kennedy dual lift pump
    Banks air intake

  2. #2
    Join Date
    Apr 2001
    Location
    CA
    Posts
    12,999

    Default

    I wouldn't trust eBay for fitment. They get it wrong too often, and the specs depend on whatever the seller inputs.

    I'm showing ACD 41-962 Platinum for that truck/engine, gas or Flex Fuel. The OEM Iridium plugs are no longer available from ACD. If you want Iridium, use Bosch (#9602) or NGK (#7397).
    1985 Blazer 6.2
    2001 GMC 2500HD D/A
    dmaxmaverick@thedieselpage.com

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