---
product_id: 629885590
title: "2-Pack Magnesium Anode Rods for SW Models RV Tank Water Heaters, Stainless Steel Core, Extends Water Heater Tank Life (521421)"
brand: "suburban"
price: "$53.23"
currency: USD
in_stock: true
url: https://www.desertcart.us/products/629885590-2-pack-magnesium-anode-rods-for-sw-models-rv-tank
store_origin: US
region: United States of America
---

# Optimized for high pH & soft water Commercial-grade stainless steel core Extends tank life by absorbing corrosion 2-Pack Magnesium Anode Rods for SW Models RV Tank Water Heaters, Stainless Steel Core, Extends Water Heater Tank Life (521421)

**Brand:** suburban
**Price:** $53.23
**Availability:** ✅ In Stock

## Summary

> 🛠️ Protect your RV’s hot water like a pro—because tank failure is so last season!

## Quick Answers

- **What is this?** 2-Pack Magnesium Anode Rods for SW Models RV Tank Water Heaters, Stainless Steel Core, Extends Water Heater Tank Life (521421) by suburban
- **How much does it cost?** $53.23 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/629885590-2-pack-magnesium-anode-rods-for-sw-models-rv-tank)

## Best For

- suburban enthusiasts

## Why This Product

- Trusted suburban brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Built to Last:** Commercial-grade stainless steel core ensures unmatched durability and strength.
- • **Ultimate Corrosion Defense:** Magnesium anode rods shield your RV water heater from corrosive damage, extending tank life.
- • **Double Pack, Double Protection:** Two rods included to keep your RV’s hot water system running smoothly and reliably.
- • **Tailored Fit for Suburban Tanks:** Specifically designed for Suburban porcelain-lined water heaters for seamless installation and optimal protection.
- • **Perfect for Soft Water Environments:** Engineered to perform best in high pH and soft water conditions, maximizing longevity.

## Overview

The Suburban 2-Pack Magnesium Anode Rods feature a commercial-grade stainless steel core designed specifically for Suburban porcelain-lined RV water heater tanks. Optimized for high pH and soft water environments, these rods effectively absorb corrosive elements, significantly extending the lifespan of your water heater. Each pack includes two durable rods, providing essential maintenance to keep your RV’s hot water system reliable and long-lasting.

## Description

Suburban 2-Pack Magnesium Anode Rods for SW Models RV Tank Water Heaters, Stainless Steel Core, Extends Water Heater Tank Life (521421)

## Features

- EXTENDS WATER HEATER TANK LIFE: The Suburban Magnesium Anode Rods feature magnesium anode with a commercial grade stainless steel core, effectively absorbing corrosive actions caused by hot water. This helps prolong the life of your Suburban porcelain-lined tank water heaters.
- IDEAL FOR HIGH pH AND SOFT WATER: These anode rods are best suited for use in environments with high pH levels and soft water conditions. They provide optimal protection against corrosion, ensuring the longevity of your RV's water heating system.
- COMMERCIAL GRADE STAINLESS STEEL CORE: Each anode rod is engineered with a durable stainless steel core, enhancing its strength and durability. This construction helps extend the working life of the anode rod and, consequently, your RV's hot water tank.
- DESIGNED FOR SUBURBAN PORCELAIN-LINED TANKS: Specifically crafted for Suburban porcelain-lined tank water heaters, these anode rods offer a perfect fit and reliable performance. They effectively absorb corrosive elements, protecting the integrity of your water tank.
- PROLONGS WATER TANK DURABILITY: Ensure long-lasting performance and reliability with this essential maintenance accessory!

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Brand | Suburban |
| Product Dimensions | 1"W x 9"H |
| Special Feature | Tank Lifespan Extension |
| Color | Silver |
| Mounting Type | internal |
| Is Electric | No |
| Manufacturer | Suburban |
| UPC | 755790721856 |
| Part Number | 521421 |
| Item Weight | 13.7 ounces |
| Item model number | 521421 |
| Size | 2 Pack |
| Item Package Quantity | 1 |
| Special Features | Tank Lifespan Extension |
| Included Components | 2-Pack Magnesium Anode Rods |
| Batteries Required? | No |

## Product Details

- **Brand:** Suburban
- **Power Source:** Ac/dc
- **Product Dimensions:** 1"W x 9"H
- **Special Feature:** Tank Lifespan Extension
- **Color:** Silver

## Images

![2-Pack Magnesium Anode Rods for SW Models RV Tank Water Heaters, Stainless Steel Core, Extends Water Heater Tank Life (521421) - Image 1](https://m.media-amazon.com/images/I/51VGzmW7dZL.jpg)

## Available Options

This product comes in different **Size, Style** options.

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**Shop now:** [https://www.desertcart.us/products/629885590-2-pack-magnesium-anode-rods-for-sw-models-rv-tank](https://www.desertcart.us/products/629885590-2-pack-magnesium-anode-rods-for-sw-models-rv-tank)

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-03-07*