1. Welcome To GMTruckClub.com!

    The #1 Chevy Truck Forum Online
    Online since 2004, we are the #1 Chevy Truck & SUV forum and user community. If you have any questions about your Chevy or GMC Truck, SUV or Crossover, or just want to connect with other GM owners and enthusiasts around the world, you've found the best place on the internet to do that.

    Join Today ~ It's Free
    Registering is Free and Easy! Hope to see you on the forums soon!

Spark Plugs for 05 with 5.3L

Discussion in 'GM Powertrain' started by jason778, Mar 22, 2010.

  1. jason778

    jason778 New Member

    My manual calls for 41-985 plugs however I have seen some information that 41-110 may be the replacement. Can anyone confirm what the current production AC Delco Spark Plug I need is?

    Thanks!
  2. 99'HEARTBEAT

    99'HEARTBEAT Epic Member Staff Member 5+ Years ROTM Winner 1000 Posts Platinum Contributor

    G.M ...has changed the part # Number for the A/C Delco Iridium Spark plugs,you are correct with the part number being 41-110....it is the old part number 41-985.

    Here are the ones you are asking about,

    http://www.summitracing.com/parts/ACF-41-985/
    Last edited: Mar 22, 2010
  3. jason778

    jason778 New Member


    Thanks for the help! Do you know if there is any real advantage to using the 41-110 over the older 41-985? Thanks!
  4. 99'HEARTBEAT

    99'HEARTBEAT Epic Member Staff Member 5+ Years ROTM Winner 1000 Posts Platinum Contributor

    No Advantage....It's the same Iridium tip Spark Plug,...just a different part Number...They do come Pre-Gapped out of the box,

    The gap on the Plugs should be 0.40
    Last edited: Aug 1, 2010

Share This Page