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Need Part Number Please

This is a discussion on Need Part Number Please within the General Help forums, part of the LSx Technical Help Section category; I picked up a LS6 intake for a great price, but need to pick up the coolant lines. Anyone have ...

  1. #1
    Junior Member Tickwomp's Avatar
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    Need Part Number Please

    I picked up a LS6 intake for a great price, but need to pick up the coolant lines. Anyone have the part numbers?

    Thanks in advance!

  2. #2
    Veteran 0rion's Avatar
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    it's hard for me to read the numbers in the manual but this is what they look like to me

    plugs- 1256788
    front pipe-12568478
    rear bolts-11516425
    front bolts-12561089

    the numbers are kind of smudged looking but that looks right. Thunder racing carries the pipe and block off plugs.
    http://www.thunderracing.com/catalog...&sid=122#P3602

  3. #3
    Junior Member Tickwomp's Avatar
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    Thanks! I read that many folk simply plug the rears and go with the front crossover. Could one use another front in the rear?

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    Veteran 0rion's Avatar
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    you can do that but the rear plugs are cheap.....I would do it right the first time.

  5. #5
    Junior Member Tickwomp's Avatar
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    Thanks! I definetely want to do this right!!

    This mod should hold me until I can save up for headers...

  6. #6
    Junior Member Tickwomp's Avatar
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    Quote Originally Posted by 0rion View Post
    it's hard for me to read the numbers in the manual but this is what they look like to me

    plugs- 1256788
    front pipe-12568478
    rear bolts-11516425
    front bolts-12561089

    the numbers are kind of smudged looking but that looks right. Thunder racing carries the pipe and block off plugs.
    http://www.thunderracing.com/catalog...&sid=122#P3602
    GM parts numbers are:

    Coolant Plugs - 12602540
    coolant Gaskets - 12551933
    Front Coolant Pipe - 12602544

  7. #7
    Veteran 0rion's Avatar
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    Quote Originally Posted by Tickwomp View Post
    GM parts numbers are:

    Coolant Plugs - 12602540
    coolant Gaskets - 12551933
    Front Coolant Pipe - 12602544
    I have the parts manual cd's and those were the numbers it had on those......not sure why they're not correct buy you're right, the numbers I have arent' correct.

  8. #8
    Junior Member Tickwomp's Avatar
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    Quote Originally Posted by 0rion View Post
    I have the parts manual cd's and those were the numbers it had on those......not sure why they're not correct buy you're right, the numbers I have arent' correct.
    No problem, thanks for trying to help. I caught a break when I call Cheverolet parts. Dude answered in 2 rings and I described what I was trying to do, and he gave the numbers in less than 5 minutes. Oh yeah, and they had everything in stock!!! Looks like I'll be able to pull this off tomorrow after all. Even better, the weather here in Dallas is improving too.

  9. #9
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    Don't know why GM changes part numbers all the time, maybe because of different suppliers or something? For example: If they haven't changed it again, the current PN for the 01-02 Fbody LS6 intake is 88894339 (formerly 88890524, 88890523 and 12561184 which came on my car).

  10. #10
    Member qwk93ta's Avatar
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    Quote Originally Posted by 2001NBMZ28 View Post
    Don't know why GM changes part numbers all the time, maybe because of different suppliers or something? For example: If they haven't changed it again, the current PN for the 01-02 Fbody LS6 intake is 88894339 (formerly 88890524, 88890523 and 12561184 which came on my car).
    88894339 is the part number for the LS6 I just bought off of Ebay.

  11. #11
    ls1 powered seabee sutie's Avatar
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    how many of the gaskets with p/n: 12551933 do i need for the swap. i just bought the crossover tube and the plugs,(X2). and what other gaskets do i need for the swap?

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