*PLUMBERSSTOCK EXPERT* responded:
Thank you for asking help from the PlumbersStock team. Do you mean "RP5266"? If your manual says that you need the Peerless RP5266 diverter, then, definitely, this is not the diverter that you're looking for. This Peerless RP41702 diverter is used for the following Peerless Faucet models: P299568LF, P299575LF, and P299578LF. Please see page 12 of this Parts Catalogue for reference. The Peerless RP5266 is not yet on our system but since we are Peerless Faucet's distributor, our Customer Service Department will be glad to help you in placing the order. You can dial at 435-868-4020 or send an e-mail at firstname.lastname@example.org. happy shopping!