Whirlpool WRT518SZFM04 Water Filter Replacement
Why The GXRTDR water filter…
The GXRTDR water filter is the correct replacement for the Whirlpool WRT518SZFM04 refrigerator. This model is a top-freezer unit that is icemaker-ready, and it uses an inline water filter system, which the GXRTDR is specifically designed to connect to. Unlike internal filters found in side-by-side or French door models, the GXRTDR connects externally to the water line leading to the icemaker.
Common Mistakes When Ordering
- Ordering an internal filter; the WRT518SZFM04 uses an external, inline filter.
- Confusing this model with other Whirlpool top-freezer models that may not be icemaker-ready or use a different inline filter SKU.
- Not checking the water line connection type before ordering, as the GXRTDR is designed for standard 1/4-inch compression fittings.
Installation & Replacement Guide
Location & Installation: For the Whirlpool WRT518SZFM04, the GXRTDR water filter installs externally on the 1/4-inch water supply line leading to the refrigerator's icemaker connection.
Replacement Frequency: Replace the GXRTDR water filter for the Whirlpool WRT518SZFM04 every 6 months or after filtering 750 gallons, whichever comes first.
Other Models Using GXRTDR
The same water filter (GXRTDR) is also compatible with these models:
Other Whirlpool Models
Frequently Asked Questions
Which water filter fits the Whirlpool WRT518SZFM04?
The GXRTDR water filter is the correct replacement for the Whirlpool WRT518SZFM04 refrigerator.
Is this water filter guaranteed to fit?
Yes. Every recommendation on ReplacementParts-AI is verified against the manufacturer's compatibility data. If a part doesn't fit, we'll make it right.
How long does shipping take?
Most orders ship within 1–2 business days. Standard delivery is 3–5 business days.