Water pump drive pulley
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Northstar Engines and System Technical Discussion Discussion, Water pump drive pulley in Cadillac Engine Technical Discussion; Hey guys, does anyone know where I can get one of these pulleys for my 2000 DTS for cheap? RockAuto?...
  1. #1
    baller95's Avatar
    baller95 is offline Cadillac Owners Enthusiast
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    Water pump drive pulley

    Hey guys, does anyone know where I can get one of these pulleys for my 2000 DTS for cheap? RockAuto?

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  3. #2
    MoistCabbage's Avatar
    MoistCabbage is offline Cadillac Owners 10000+ Posts
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    They're like $30 on Rockauto.
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    Re: Water Pump Pulley

    There are 3 pulleys - the drive pulley, cam mounted; the tensioner pulley, bolted to the tensioner spring arm; and the water pump pulley, pressed on and not available separately from the pump assembly.

    Yep, RockAuto - Tensioner pulley in "Belt Drive", WP (drive) pulley in "Cooling System" as well as the water pump assembly.

    The big plastic/metal cam pulley takes a special removal/install kit. Don't screw up that cam extension. BIG bucks.
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    Re: Water Pump Pulley

    Thanks guys, so I'd need to get the entire assembly? Anyone know what the costs are for that? Still about $30?

  6. #5
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    Re: Water Pump Pulley

    What assembly ? Which pulley are we talking about ?

    Each one of those 3 pulleys takes a very different method to replace it.

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    Re: Water Pump Pulley

    Oh my bad, I think it's the drive pulley.

  8. #7
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    Re: Water Pump Pulley

    That pulley is pressed TIGHTLY onto the left (front) bank intake cam extension. It takes a special puller/installer and caution to replace it. Do NOT bang, tap, twist, or bend - use the correct puller on the pulley hub groove. If it has never been fooled with the black plastic protective cover is probably still in place. Remove it with a suitable Torx to reveal the chamfer and threads used for pull/install.

    How-to's in Tech Tips and Engines; Northstar. Google "cadillac forums northstar water pump drive pulley".
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  9. #8
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    Re: Water Pump Pulley

    You need a dorman products 300-940, or you try your luck with the appropriate remover/installer at the salvage yard.......

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    Re: Water Pump Pulley

    Quote Originally Posted by Submariner409 View Post
    That pulley is pressed TIGHTLY onto the left (front) bank intake cam extension. It takes a special puller/installer and caution to replace it. Do NOT bang, tap, twist, or bend - use the correct puller on the pulley hub groove. If it has never been fooled with the black plastic protective cover is probably still in place. Remove it with a suitable Torx to reveal the chamfer and threads used for pull/install.

    How-to's in Tech Tips and Engines; Northstar. Google "cadillac forums northstar water pump drive pulley".
    Thanks! I have a guy who'll do the work but I just wanted to know how much for the part.

    Quote Originally Posted by 98eldo32v View Post
    You need a dorman products 300-940, or you try your luck with the appropriate remover/installer at the salvage yard.......
    Dorman products?

  11. #10
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    Re: Water pump drive pulley

    www.rockauto.com, make, model, year, engine - either "belt drive", "engine" or "cooling". Click the small picture for a larger view.

    Dorman is a huge automotive product distributor and, like most others, contracts with thousands of suppliers - you just need to know the worth and quality of each product. Some are obviously inferior to OEM.

    You want to bring water to your eyes ??? Look up the pricing for the Kent-Moore GM Northstar water pump drive pulley removal and install equipment.

    Sometimes you can get lucky at a GM dealership closing auction. Bring certified checks.

    Here's the puller - well over $100 alone ...............
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    Re: Water pump drive pulley

    Well, the bad pulley broke my serpentine belt and sent things flying around in the engine. Mechanic says I need an "auto adjustment pulley assembly" and belt. What's he talking about?

  13. #12
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    Re: Water pump drive pulley

    Unless the tensioner spring or arm is damaged, the water pump tensioner pulley is replaceable alone. Either RockAuto (belt drive, tensioner pulley, 3-rib). As per the picture.

    Follow the instructions posted earlier in this thread if the tensioner pulley caused damage to the large drive pulley on the cam extension.

    Why didn't you do the work when you started this thread 4 months ago ??? You could now have (and might have) caused much more engine damage than you know. Here's a Northstar hint: Fix the small stuff NOW before the growing snowball takes out the entire engine.
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    Re: Water pump drive pulley

    Haha yeah I know I end up wanting to do something then never have the time to do it. Thanks though!

  15. #14
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    Re: Water pump drive pulley

    I sell the pulley puller tool for $53.00. Slightly different but works flawlessly. If you need one let me know


    Need parts for your Northstar Engine? www.northstarperformance.com

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