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Sigma 18.07.056 Single Handle Faucet Cartridge

Grey plastic cartridge with tan top red limit stop square metal handle connection with red rubber seals.
Sigma 18.07.056 Single Handle Faucet Cartridge - Image 2
Sigma 18.07.056 Single Handle Faucet Cartridge - Image 3
Sigma 18.07.056 Single Handle Faucet Cartridge - Image 4

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“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

$43.17

 

The 18.07.056 is a single-lever ceramic faucet cartridge primarily manufactured by Sigma (also associated with Hydroplast as the B35 model). It is a standard 35mm replacement part used in various single-handle kitchen and bathroom faucets.

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.

SKU: 26431-3 Category: Tags: ,

 

Ensure a drip-free seal with this genuine Sigma Faucet replacement part. This ceramic disc cartridge is engineered for 1/4 turn operation, providing smooth handle rotation and long-lasting durability against mineral buildup.

 

B35     18.07.056

 

  • 35 MM Diameter
  • 2 3/4″ length

 

Customer submitted images. 

 

 

Common questions about this product

Is this item the original manufacturer's recommended replacement part? chevron-icon

Yes, this is the OEM recommended part.

Is this the correct item for my application? chevron-icon

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.

 

 

Will this item replace the original OEM part? chevron-icon

Yes, this aftermarket part will replace your OEM part. 

chat iconWHAT OUR CUSTOMERS SAY…

“Love Noel's Plumbing Supply! They are one of my favorite oddball plumbing parts purveyors. As a professional plumber, I rely on sites like Noel's to keep antique and rare fixtures alive. My customers and I are so grateful! ”
-Danielle E.
03/25/2026