Kohler 85500 Mixer Cover Assembly for 3/4" High Flow Pressure Balancing Unit

Black plastic cartridge with red limit stop brass stem stainless screws and black rubber seals.

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

$221.17

The Kohler 85500 is a genuine replacement High-Flow Pressure Balancing Unit (PBU) Mixer Cap Kit designed for 3/4-inch shower and tub valves. It is a critical service component that manages the blending of hot and cold water to ensure consistent output temperature and prevent scalding.

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: 985500 Category: Cartridges & Stems Tag: Kohler

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Restore consistent temperature and flow to your high-volume shower system with this genuine Kohler Mixer Cap Kit. Designed specifically as a direct replacement for Kohler 3/4″ Rite-Temp pressure-balance valves (K-2971 and K-306), this durable brass-and-plastic assembly handles high-flow demands. Includes an adjustable high-temperature limit stop for enhanced safety against scalding.

K-85500

Kohler GENUINE Part
Used with K-2971 and K306
Cap mixes cold and hot water to assure your shower experience is gracious
Made with premium materials for enhanced durability

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…

“Holy guacamole! They had a part moen had out of stock, shipped the next business day, and got to me the next day Ohio -> Tennesse. Super happy, double packed for safe shipment. I couldn't be happier unless they installed the part for me! ”

-Brian D.

06/08/2025