I'm having trouble with the water temperature. After about five minutes, my shower goes cold even though there is still hot water at the sink.

I just spoke with Kohler Customer Service about a similar issue I'm having. They said issues related to temperature are caused by the PRESSURE BALANCING UNIT. If you had a leak or non-temperature issue, then you should replace the MIXER CAP.

how to adjust the Kohler shower facet to get hotter water

There is a safety stop that is adjustable with an allen wrench. This is to prevent scalding. I just adjust my water heater to a safe temp and leave the the stop screw out all the way. The allen screw is just behind the O ring where the the knurled shaft is. I wish I can adjust it so it wouldn't drip when off, which is always worse in the winter. I always replace Kohler products when it"s practical, but in lieu of tearing out the shower I replace the mixer every couple of years.

does it come with new o-rings?

Yes it does, everything needed for a complete swap-out is there.

When i turn the water on . water comes out the shower head without even pulling up on the thing on top the spout. what part do i need? thanks

Assuming your handle rotates (turns, not push/pull), turn the water off with the handle then realign.

Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

Help Track order

Account Cart

Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

Help Track order

Account Cart

KOHLER GENUINE PART GP77759 MIXER CAP FOR PRESSURE BALANCE 1/2" SHOWER VALVE

KOHLER GENUINE PART GP77759 MIXER CAP FOR PRESSURE BALANCE 1/2" SHOWER VALVE

Product ID: 4127015

Details

Brand
Kohler
Exterior Finish
painted
Global Trade Identification Number
Inlet Connection Size
0.5 inches
Inlet Connection Type
Female Iron
Item dimensions L x W x H
3.5 x 2.5 x 4

💧Smooth handle rotation

⚙️Precision 1/2" FIP threading

🛡️Temperature limit stop for safety

R1527

Duties & taxes included

In stock

Sold byAmazon South AfricaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to South Africa.

Secure transaction

Description

🛁 Upgrade your shower game with KOHLER’s precision-engineered mixer cap!

EFFORTLESS OPERATION - Experience smooth, reliable handle rotation that elevates your daily shower ritual.
QUICK SIMPLE INSTALLATION - Designed for easy DIY replacement—get your shower back to peak performance in minutes.
GENUINE KOHLER QUALITY ASSURANCE - Protect your warranty and enjoy long-lasting performance with authentic KOHLER parts.
SAFETY FIRST TEMPERATURE CONTROL - Built-in temperature limit stop ensures safe, scald-free showers without sacrificing max heat.
ENGINEERED FOR SEAMLESS COMPATIBILITY - Fits perfectly with KOHLER Rite-Temp shower valves and trim for a flawless upgrade.

The KOHLER Genuine Part GP77759 Mixer Cap is a precision-engineered replacement component designed for 1/2" pressure balance shower valves. It ensures smooth handle rotation, integrates a temperature limit stop for safe water control, and fits seamlessly with KOHLER Rite-Temp valves and trim. Crafted from durable materials and backed by KOHLER’s warranty, this mixer cap protects your investment and restores optimal shower performance with easy installation.

Specifications

ASIN	B001GZU1PW
Best Sellers Rank	#23,230 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #60 in Bathtub & Shower Trim Systems #823 in Pumps & Plumbing Equipment
Brand Name	Kohler
Connector Type	Cap
Customer Reviews	4.5 4.5 out of 5 stars (1,168)
Exterior Finish	painted
Global Trade Identification Number	00650531630650
Included Components	Plumbing Fixtures;Kitchen Faucets and Accessories;faucet-aerators-and-adapters
Inlet Connection Size	0.5 inches
Inlet Connection Type	Female Iron Pipe
Item Dimensions	3.5 x 2.5 x 4 inches
Item Type Name	MIXER CAP FOR PRESSURE BALANCE 1/2" SHOWER VALVE
Item Weight	5.6 ounces
Manufacturer	Kohler
Manufacturer Part Number	GP77759
Manufacturer Warranty Description	Warranty
Material Type	Plastic
Model Number	K-GP77759
Number of Items	1
Number of Pieces	1
Outlet Connection Size	0.5 inches
Outlet Connection Type	FIP
Size	No Size
Thread Size	1/2 inch
Thread Type	Female Iron Pipe
UPC	650531630650
Unit Count	1 Count
Valve Type	Pressure Balance Valve

Common Questions

Are the products genuine and authentic?+

Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

How long does delivery take and is it reliable?+

Delivery times vary by destination country, typically ranging from 3-9 business days. Each order is fully trackable through our system. We handle all customs clearance and use reliable courier partners for last-mile delivery. You'll receive regular updates about your order status via email and our app.

What is Desertcart? Is it safe to order from?+

Desertcart is an international e-commerce platform operating since 2014. We securely process thousands of orders globally each day. Every product goes through our quality verification process before delivery, and we provide end-to-end order tracking, 24/7 customer support, and a comprehensive returns policy to ensure a safe shopping experience.

How is product pricing calculated?+

Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Yusuf A.

Fantastic experience overall. Will recommend to friends and family.

1 month ago

Anjali K.

The product quality is outstanding. Exactly what I needed for my work.

1 month ago

View all Trustpilot reviews

Shop Global, Save with Desertcart

Value for Money

Competitive prices on a vast range of products

Shop Globally

Serving millions of shoppers across more than 100 countries

Enhanced Protection

Trusted payment options loved by worldwide shoppers

Customer Assurance

Trusted payment options loved by worldwide shoppers.

Desertcart App

Shop on the go, anytime, anywhere.

R1527

Duties & taxes included

In stock

Sold byAmazon South AfricaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to South Africa.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Ayesha M.

The product exactly matches the description. Very satisfied with my purchase.

5 days ago

Khalid Z.

Great experience from order to delivery. Highly recommended!

1 week ago

View all Trustpilot reviews