Where are you getting your parts from?
From the Dayco and Lexus parts references I use, by application and cross-ref:
Lexus P/N: 16572-50190 lower
Dayco P/N: 72302 lower
Lexus P/N: 16571-50200 upper
Dayco P/N: 72301 upper
Even RA shows the Dayco numbers above (by application).
The odd thing is that there's no 22832 hose in the Dayco catalog. Put that number in their part no. or x-ref field, search and it returns:
22832 = 72302 = Gates 22832
22832 = 72302 = Carquest 22832
2006 Lexus GX 470 RADIATOR & WATER OUTLET
parts.lexusofpleasanton.com
Dayco’s high-quality aftermarket parts are designed to enhance vehicle performance and ease of installation. Check out our aftermarket product line.
na.daycoaftermarket.com