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Workhorse Water Pump for 8.1
Old 04-11-2009, 09:07 AM   #1
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Does anyone know the Workhorse part number for the 8.1l water pump? Model year is 2002 8.1L WH18. Also if you happen to know if there is a cross reference to GM Part #, Napa. I know these are not the same as in a regular truck.

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Old 04-11-2009, 09:54 AM   #2
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Quote:
Originally Posted by born2camp View Post
Does anyone know the Workhorse part number for the 8.1l water pump? Model year is 2002 8.1L WH18. Also if you happen to know if there is a cross reference to GM Part #, Napa. I know these are not the same as in a regular truck.
born2camp, Oemy has a number of cross references on his website. Check it out.

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Old 04-11-2009, 12:11 PM   #3
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The Workhorse part # is W8000530 and runs about $300 from Workhorse according to their Price Sheet

But, if you take the casting number 12558870 and look that up you will find one on eBay for about $165.
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Old 04-11-2009, 04:12 PM   #4
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Much appreciated Dale.
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Old 04-13-2009, 08:00 AM   #5
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Hey check out this site.. Rock Auto has them for less than $100! Look up Chevrolet, 2004, Avalanche 2500, cooling system, water pump.
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Old 04-13-2009, 02:06 PM   #6
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The above post is incorrect... it points to the wrong pump. I will post the correct part number once I confirm it.

Correct


Wrong



I would have edited the above post but I can't.... grrrrr
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Old 04-13-2009, 04:36 PM   #7
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Dale, looks like a c3500 2002 has pump that matches your
"correct" picture.
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Old 04-13-2009, 05:43 PM   #8
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The correct AC Delco # is 252-783.... This info provided by Glenn at OEM-Engineering
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Old 04-14-2009, 02:35 PM   #9
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As usual Dale, right on the mark. These things get cheaper with the more information I get. Beats the $300+ and is brand new AC Delco. Thank you again for looking this up for me.

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