---
product_id: 115291203
title: "Mueller B & K 888-558 Stem Assembly"
brand: "mueller b & k"
price: "KD 11.60"
currency: KWD
in_stock: true
reviews_count: 8
category: "Mueller B & K"
url: https://www.desertcart.com.kw/products/115291203-mueller-b-and-k-888-558-stem-assembly
store_origin: KW
region: Kuwait
---

# Compact 16.3-inch length Frost-free anti-siphon design Precision-fit replacement stem Mueller B & K 888-558 Stem Assembly

**Brand:** mueller b & k
**Price:** KD 11.60
**Availability:** ✅ In Stock

## Summary

> ❄️ Keep your outdoor faucet leak-free with the original Mueller precision stem!

## Quick Answers

- **What is this?** Mueller B & K 888-558 Stem Assembly by mueller b & k
- **How much does it cost?** KD 11.60 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.kw](https://www.desertcart.com.kw/products/115291203-mueller-b-and-k-888-558-stem-assembly)

## Best For

- mueller b & k enthusiasts

## Why This Product

- Trusted mueller b & k brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Easy Installation:** Direct replacement stem designed to fit seamlessly without hassle
- • **Anti-Siphon Safety:** Built-in frost-free anti-siphon feature prevents backflow contamination
- • **Durable Construction:** Lightweight yet sturdy plastic material ensures long-lasting performance
- • **Legacy Compatibility:** Perfect match for Mueller frost-free faucets over 10 years old
- • **Hard-to-Find Authenticity:** Rare genuine Mueller B & K part, no substitutes match this design

## Overview

The Mueller B & K 888-558 Stem Assembly is a specialized replacement part designed for frost-free outdoor faucets manufactured by Mueller over a decade ago. Featuring an anti-siphon design to prevent backflow and contamination, this compact, lightweight plastic stem ensures a precise fit and reliable performance. Ideal for professionals and DIYers seeking authentic, hard-to-find components to maintain legacy plumbing fixtures.

## Description

Mueller B & K 888-558 Stem Assembly

Review: Solid replacement stem - If you bought a frost free outdoor faucet from Home Depot more than 10 years ago, this is probably the right part you're looking for. After one of my outdoor faucets started leaking through the handle I assumed to standard repair kit at Home Depot would fix it. Wrong. They switched suppliers years ago from BK Mueller to Woodford and, of course, the design is totally different. Finding this design in town is almost impossible now. Check the markings on for faucet, if you have the old Mueller design, this is the replacement stem you want. Get the right size though.
Review: Not the complete part - Was not the coplmplete assembly as described.

## Features

- For anti-siphon, frost-free sillcock
- Product is manufactured in china
- This product meets customer requirement

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00GRAQMKE |
| Best Sellers Rank | #871,156 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #597 in Faucet Stems |
| Brand Name | Mueller B & K |
| Color | No Color |
| Customer Reviews | 3.4 3.4 out of 5 stars (21) |
| Date First Available | November 18, 2013 |
| Included Components | Mueller B & K 888-558 Stem Assembly |
| Item Dimensions LxWxH | 16.3 x 0.8 x 0.8 inches |
| Item Package Dimensions L x W x H | 16 x 2.9 x 0.4 inches |
| Item Weight | 1.6 ounces |
| Manufacturer | Mueller B & K |
| Material | Plastic |
| Model Name | Mueller B & K 888-558 Stem Assembly |
| Number of Items | 1 |
| Package Weight | 3.2 ounces |
| Part Number | 888-558 |
| Size | Pack of 1 |
| Suggested Users | unisex-adult |
| Warranty Description | Warranty |

## Images

![Mueller B & K 888-558 Stem Assembly - Image 1](https://m.media-amazon.com/images/I/71-fdtjuAQL.jpg)

## Questions & Answers

**Q: Does the thread on these match what the photos show? I have a mueller stem, but it has 6 threads instead of the 3-4 shown. Is this compatible?**
A: I actually bought one of these thinking I had this type of unit, but I had another brand. This did not fit the brand I had. I am sorry, I cannot answer the question. I had to buy the entire new faucet of a brand that I can buy parts for, so I can fix it in the future... Sorry.

**Q: is this for a 12" sillcock or is the OAL of this stem 12"? I need a OAL of 15 3/4**
A: It is for a 12" silcock

## Customer Reviews

### ⭐⭐⭐⭐⭐ Solid replacement stem
*by T***E on August 21, 2024*

If you bought a frost free outdoor faucet from Home Depot more than 10 years ago, this is probably the right part you're looking for. After one of my outdoor faucets started leaking through the handle I assumed to standard repair kit at Home Depot would fix it. Wrong. They switched suppliers years ago from BK Mueller to Woodford and, of course, the design is totally different. Finding this design in town is almost impossible now. Check the markings on for faucet, if you have the old Mueller design, this is the replacement stem you want. Get the right size though.

### ⭐ Not the complete part
*by B***R on July 18, 2025*

Was not the coplmplete assembly as described.

### ⭐⭐⭐ The overall length of this stem is about 16".
*by A***R on September 4, 2024*

Help overall length (OAL) listed. Purchased without knowing the length, nominal or OAL, hoping the OAL = 12" to match stem for outdoor faucets. Bought to check and replace the washers on stems of my outside faucets without having to leave the water off. However, the Mueller B&K 888-558 was too long at 16". Therefore, I returned it. A careful search of reviews indicates a Mueller B&K 888-556 is supposed to be 12" long. I ordered it to see if it is what I want. Matched my original to the Mueller B&K 888-558 in its bag for a side-by-side visual comparison. The Mueller B&K should work okay when I get 12" stem.

---

## Why Shop on Desertcart?

- 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016
- 🌍 **Shop Globally** — Access 737+ million products across 21 categories
- 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price
- 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members)
- 🔒 **Secure Payments** — Trusted payment options with buyer protection
- ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews

**Shop now:** [https://www.desertcart.com.kw/products/115291203-mueller-b-and-k-888-558-stem-assembly](https://www.desertcart.com.kw/products/115291203-mueller-b-and-k-888-558-stem-assembly)

---

*Product available on Desertcart Kuwait*
*Store origin: KW*
*Last updated: 2026-02-21*