Delta Faucet Cartridge | Noels Plumbing Supply Inc

White plastic cartridge with brass stem black oring stainless bottom with black seats and stainless springs.

Scald Guard Replacement Cartridge for Delta 1600 Series Tub and Shower Faucets NRP1991 NRP3560 - Image 2

Scald Guard Replacement Cartridge for Delta 1600 Series Tub and Shower Faucets NRP1991 NRP3560 - Image 3

WHAT OUR CUSTOMERS SAY…

“Recently I purchased a rebuild kit for my American Standard R series bathtub faucet. I want to say thank you for carrying this product. The rebuild kit worked beautifully and I was able to save the original look and feel of our 1957 bathroom. Thank you! ”

-Adam T

04/11/2024

$35.27

The Delta RP1991 is a replacement stem unit cartridge designed specifically for Delta 1600 Series single-handle tub and shower faucets. It is prominently used in older Scald-Guard plumbing configurations manufactured roughly between 1974 and 1993.

We can ship anywhere the US Postal Service ships. For orders being shipped outside the US, please contact us at (888) ASK-NOEL, noelsplumbingsupply@fuse.net, or via the text widget on this screen.

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Stop annoying faucet drips and restore smooth temperature control with the Delta RP1991 Stem Unit & Seats. Engineered specifically as a replacement part, this assembly is designed for Delta 1600 Series single-handle tub and shower faucets featuring the “Scald-Guard” trim. Whether your older shower valve is leaking, sticking, or struggling to balance hot and cold water, replacing the worn internal stem and seats is the ultimate, long-lasting solution.

NRP1991 NRP3560

Compares to OEM RP1991 RP3560
Use as a generic replacement OEM RP1991 RP3560
2″ length
Oval broach
Includes seats & springs
Replacement part for Old Style 1600 Series Faucets

Related Documents

Delta Model 1600 Series Parts

Customer submitted images.

Common questions about this product

Yes, this aftermarket part will replace your OEM part.

If you’re not sure text us a picture 1-888-275-6635 or email us a picture at noelsplumbingsupply@fuse.net.

We will make sure you have the right part.

WHAT OUR CUSTOMERS SAY…

“Y'all are amazing. I live in Texas and it's faster to order express from Noel's than go to local parts stores. Customers can text Noel's a picture of the part they need and Noel's will find that part or the equivalent and text the link. They have 2-3 day shipping available. The staff answers the phone quickly, politely and they know their stuff! The unit I needed plumbing parts for was built in the 30s. No matter, Noels has me covered. I highly recommend them. Thank you Noel's for your efficient, old school excellence combined with current technology! You have saved me so much time, money, and aggravation! A++++++ ”

-Thalia,

07/03/2026