Suburban RV Water Heater Anode Rod 9" 3/4" Thread — Aluminum with Stainless Core, Easy Install

The Suburban Aluminum Anode Rod (233516) is a 9" replacement anode with a 3/4" thread that sacrifices itself to slow corrosion and extend the life of Suburban porcelain-lined RV water heaters.

If you own a Suburban porcelain-lined water heater in an RV, camper or motorhome, this genuine Suburban anode rod is designed to be a simple, cost-effective maintenance part. Built with an aluminum body and a commercial-grade stainless steel core, it preferentially corrodes so the tank walls remain protected. Installing a fresh anode rod is one of the easiest ways to reduce tank deterioration, avoid premature leaks and delay costly water heater replacements.

How does the anode rod protect my RV water heater?

The anode rod works by corroding before the steel tank does, a process called sacrificial protection. The aluminum alloy attracts corrosive elements in hot water, so the metal of the rod is consumed instead of the tank lining. Using the right anode for your tank chemistry helps keep the porcelain-lined surface intact longer.

• Aluminum outer body with stainless steel core for reliable sacrificial action
• Designed specifically for Suburban porcelain-lined tanks
• Reduces rust formation and delays tank perforation

Is this anode rod easy to install in an RV?

Yes — the 233516 is sized for straightforward replacement and fits common Suburban water heater fittings. With a 3/4" threaded connection and a 9" length, it can be swapped with basic tools in most installations. Always drain a small amount of water and follow safety steps before removing the old rod.

• 3/4" thread matches standard Suburban water heater ports
• 9" length clears typical access openings in RV compartments
• Minimal tools required — wrench and basic leak checks recommended

When should I choose this aluminum anode vs other types?

This aluminum anode is especially well-suited for soft water or higher pH environments where aluminum performs effectively. In very hard-water areas or where magnesium anodes are preferred, check local water conditions or a service technician’s advice. Replacing the anode proactively every few years prevents advanced corrosion issues.

• Best for soft water and higher pH conditions
• Aluminum composition offers cost-effective protection
• Consider water tests if you suspect very high mineral content

What are the dimensions and compatibility details?

The Suburban anode rod measures 9 inches long and uses a 3/4-inch threaded fitting, matching Suburban porcelain-lined RV water heaters. It’s an OEM-compatible part intended to maintain warranty-friendly repairs and keep your unit operating longer. Verify thread size and tank access before purchase to ensure fit.

• Length: 9" for easy access and fit inside tank cavities
• Thread size: 3/4" standard connection for Suburban tanks
• Compatibility: Designed for Suburban porcelain-lined RV water heaters

Who this product is for: RV owners, fleet operators and maintenance technicians looking for a reliable, manufacturer-compatible anode rod to protect Suburban porcelain-lined water tanks. It’s ideal if you favor preventative maintenance, camp in soft-water regions, or want an accessible, straightforward replacement part to extend your water heater’s service life without major repairs.