Plastic Lbz water pump part#

[Duramax racer 8]

Looking for the part# for a plastic Lbz water pump only if possible, but the part # for pump and housing is better than nothing. Thanks!!

 

[Woodster]

12637105

https://www.gmpartsdirect.com/oem-parts/gm-water-pump-does-not-include-gasket-12637105

 

[JoshH]

I've never seen an OEM plastic impeller LBZ water pump without the housing. Gates may sell one though.