Best alternate replacement
Perfect fit as AP431. Works great! Water quality is good. Read more
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| Material | Food-grade polyphosphates |
|---|---|
| Product Dimensions | 2.6"D x 2.57"W x 9.3"H |
| Item Weight | 1.1 Pounds |
| External Testing Certification | RoHS |
| Product Benefits | Prevent Limescale and Corrosion, Easy of Installation |
| material | Food-grade polyphosphates |
|---|---|
| product_dimensions | 2.6"D x 2.57"W x 9.3"H |
| item_weight | 1.06 pounds |
| external_testing_certification | RoHS |
| product_benefits | Prevent Limescale and Corrosion, Easy of Installation |
| brand | AQUA CREST |
| manufacture_year | 2022 |
| upc | 840814135129 |
| unit_count | 1 Count |
| compatible_water_purifier_models | 3M SF18-S |
| number_of_items | 1 |
| manufacturer | AQUA CREST |
| item_model_number | AP431 |
| best_sellers_rank | #56,048 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #414 in Replacement Under-Sink Water Filters |
| is_discontinued_by_manufacturer | No |
| date_first_available | February 14, 2017 |












Customers say
Customers find the water filter works well, particularly with tankless water heaters and dishwashers, and appreciate its perfect fit and easy installation.
Perfect fit as AP431. Works great! Water quality is good. Read more
Repeat order. Decent price, fast delivery. Read more
Works exactly like it should. Read more
Good direct replacement. Read more
I use this on the cold inlet side of my tankless water heater. I haven’t had any issues so far so I have to believe it’s doing the job it’s supposed to. I keep flushing the heater so hopefully that abd using these will keep it running trouble-free for years! Read more
At the plumber’s recommendation, I replace this filter every year. I’ve never had a problem so it must be good Read more
I order it every year and it fulfills my expectations. Read more
Way better and cheaper than the stores Read more