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Which spark plug number is correct - 1999 Z-28

This is a discussion on Which spark plug number is correct - 1999 Z-28 within the Camaro / SS forums, part of the Vehicle Specific category; Hello All I pulled what I believe to be (2nd owner) the original plugs from my 99 Z-28. The part ...

  1. #1
    Junior Member TeeRod's Avatar
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    1999 Camaro Z-28

    Which spark plug number is correct - 1999 Z-28

    Hello All

    I pulled what I believe to be (2nd owner) the original plugs from my 99 Z-28. The part number is AC Delco - 41-952, GM #25321615.

    I went to Advance AP the guy gave me Delco 41-110, checked it 2 times and said it was correct.

    I absolutely want the same plugs it came with. What is correct?

    Thanks very much for taking the time to respond

    TeeRod
    Orlando, FL
    99 Z-28 with a few bolt on's

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    Member My00Z28's Avatar
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    Quote Originally Posted by TeeRod View Post
    Hello All

    I pulled what I believe to be (2nd owner) the original plugs from my 99 Z-28. The part number is AC Delco - 41-952, GM #25321615.

    I went to Advance AP the guy gave me Delco 41-110, checked it 2 times and said it was correct.

    I absolutely want the same plugs it came with. What is correct?

    Thanks very much for taking the time to respond

    TeeRod
    Orlando, FL
    99 Z-28 with a few bolt on's
    the plugs they gave you are going to be direct replacements for your car. things change every year with plugs and they will make new p/n i work at Advance auto and those are the only AC-delcos that they offer for the car... if you go to ac-delcos website and search your car it will even say the part number for your plugs is 41-110!!!

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    Your dealership guy konigandy6's Avatar
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    2008 Corvette Z06

    The new GM part number for Delco iridium tip spark plugs for the LS1:

    GM# 12621258

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    Visualize°Design°Create SSwt00SS's Avatar
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    '12 Silver SS 1SS
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    why do you want the same plug?

    if you are changing them, its a great time to get the NGK-TR55 plugs. ideal plugs to use for our cars.

    LS1 Stock
    Thread – 14mm
    Reach - .708”
    Socket – 5/8 hex
    Seat - Taper
    Stock Heat Range: 5
    Gap: .060
    Plug: NGK TR55 (stock number 3951); NGK TR55IX (stock number 7164)

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    Member My00Z28's Avatar
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    They need to cross the tr55 they r not the same u want a 3951 tr55

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    Member bryceslu's Avatar
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    Quote Originally Posted by SSwt00SS View Post
    why do you want the same plug?

    if you are changing them, its a great time to get the NGK-TR55 plugs. ideal plugs to use for our cars.

    LS1 Stock
    Thread – 14mm
    Reach - .708”
    Socket – 5/8 hex
    Seat - Taper
    Stock Heat Range: 5
    Gap: .060
    Plug: NGK TR55 (stock number 3951); NGK TR55IX (stock number 7164)
    um not sure about that. nothin wrong with the Delco Iridiums.

    I wouldnt put ngk 55s in my car either.

  7. #7
    Visualize°Design°Create SSwt00SS's Avatar
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    '12 Silver SS 1SS
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    Quote Originally Posted by bryceslu View Post
    um not sure about that. nothin wrong with the Delco Iridiums.

    I wouldnt put ngk 55s in my car either.
    never said there was anything wrong. for my setup, the NGK's have performed well. i simply made a suggestion.

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    Your dealership guy konigandy6's Avatar
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    Quote Originally Posted by SSwt00SS View Post
    never said there was anything wrong. for my setup, the NGK's have performed well. i simply made a suggestion.
    +1

    I also run 55's and they're excellent. The new Iridium Delco's are not bad either. But back in 02, they were platinum.

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    Member My00Z28's Avatar
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    Quote Originally Posted by SSwt00SS View Post
    never said there was anything wrong. for my setup, the NGK's have performed well. i simply made a suggestion.
    Quote Originally Posted by konigandy6 View Post
    +1

    I also run 55's and they're excellent. The new Iridium Delco's are not bad either. But back in 02, they were platinum.
    im running 55's in mine also $15 a set of 8(NGK) or $50 for a set of 8(Delco), so far the NGK's seem to be great, about 500 miles so far and ill probably replace them every year for the price not a big deal!!!

  10. #10
    Your dealership guy konigandy6's Avatar
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    Quote Originally Posted by My00Z28 View Post
    im running 55's in mine also $15 a set of 8(NGK) or $50 for a set of 8(Delco), so far the NGK's seem to be great, about 500 miles so far and ill probably replace them every year for the price not a big deal!!!
    The price is right, but replacing them every year would be a huge PITA!!

  11. #11
    Junior Member CHAUCEY's Avatar
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    1995 Chevrolet Camaro

    Delco 41-110 should be correct.

  12. #12
    Member My00Z28's Avatar
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    Quote Originally Posted by konigandy6 View Post
    The price is right, but replacing them every year would be a huge PITA!!
    well most only put like 5,000 miles on their cars i have tripled/quadrupled that number with my first car, i put 30,000 miles on it in a year and a half!!
    you can change the plugs in like 30 minutes... i spend longer washing and drying my car than i would replacing the plugs lol!

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    Senior Member 98maro's Avatar
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    Only plugs I would use on ls1 is acdelco iridiums.
    I put them on my Z. On my ss I have acdelco rapid-fire I dnt feel no difference. But next time I'll get the iridiums.
    I would never buy NGKs.
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    Your dealership guy konigandy6's Avatar
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    Quote Originally Posted by My00Z28 View Post
    well most only put like 5,000 miles on their cars i have tripled/quadrupled that number with my first car, i put 30,000 miles on it in a year and a half!!
    you can change the plugs in like 30 minutes... i spend longer washing and drying my car than i would replacing the plugs lol!
    30 minutes?!?!?!

    Hey, since you're from MI... you're gonna have to go ahead and change mine out for me!

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    Member My00Z28's Avatar
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    Quote Originally Posted by konigandy6 View Post
    30 minutes?!?!?!

    Hey, since you're from MI... you're gonna have to go ahead and change mine out for me!
    haha ill think about it...

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