This is a used hydraulic power steering pump made by Caterpillar. It fits the 637 and 631C scraper models and has the manufacturer part numbers 7J0741 or 9J5052. The pump is sold with free shipping. Sold as USED and as is with no returns. Don't pass up this great deal, this pump came from a heavy equipment maintenance business of 30 years and was in working condition when it was tested 8 years ago.  Contact me with any questions.  Thank you.  

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