Need help identifying impeller

[mulderab2]

My stock pump and impeller was garbage so I bought used off eBay. Seller says impeller is aftermarket with stock pitch for 2003 gtx sc.

The nose cone attachment area is much wider than my stock, and is definitely threaded. The impeller also has casting numbers of QC 1 248.

Below are images of my stock impeller (gray) and the newer mysterious impeller.





Thanks