Washerless Cartridge for Pioneer X-3400001

“Kohler K-GP1017426 Single Handle Cartridge Assembly 1017426” has been added to your cart. View cart

White plastic carttridge with brass limit stop brass stem black rubber o-ring and stainless bottom.

White plastic cartridge with brass limit stop brass handle connection copper clip with black o-ring and stainless bottom.

WHAT OUR CUSTOMERS SAY…

“Fantastic! I walked in with parts to the faucet in my vintage sink and walked out with everything I needed. Chain hardware stores suggested I get a whole new sink and/or would not be able to do it without a plumber. The employee at Noels took a quick look, knew what it was, and had it in stock. I was able to fix my sink in two minutes with their help! ”

-Elizabeth A.

03/14/2021

$21.47

The Pioneer X-3400001 is a genuine washerless replacement cartridge designed for single-handle tub and shower valve sets.

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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Restore your shower’s performance with the Genuine Pioneer X-3400001 Replacement Cartridge. Designed for single-handle 4010B and 4011B valve sets, this washerless unit features an adjustable temperature limit stop to ensure scald-free, precise control over your water temperature.

X-3400001

This cartridge has a single alignment tab.

White plastic carttridge with brass limit stop brass stem black rubber o-ring and stainless bottom.

If your cartridge has 2 alignment tabs, use the link below to that cartridge.

Single Handle Cartridge for Pegasus Faucets RP22003

Common questions about this product

Yes, this is the OEM recommended 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…

“I was very happy with Noel’s Plumbing. I was searching for a fairly rare part and saw it listed on their website. After placing my order, I was informed that the item was actually on backorder. Noel’s Plumbing was upfront and honest right away, letting me know it might take some time to arrive. Throughout the wait, they consistently kept me updated, which I really appreciated. When the part finally came in, they shipped it out immediately. It arrived exactly as described and was precisely what I needed. Excellent communication, honesty, and follow-through. Thank you, Noel’s Plumbing! ”

-Dave F.

04/04/2026