# Waterdrop CS-52 Refrigerator Water Filter, WD-F26B

Waterdrop CS-52 WD-F26B is a replacement refrigerator water filter listed for Bosch 640565 and a range of other filter models. The listing claims chlorine reduction, NSF 42 and NSF 372 certification, and recommends replacement at 300 gallons or six months, whichever comes first.

- [Original product page](https://best-deals.pro/product/waterdrop-cs-52-wd-f26b-refrigerator-water-filter)
- [View offer](https://best-deals.pro/visit/waterdrop-cs-52-wd-f26b-refrigerator-water-filter)
- Market: US
- Language: en-US
- Currency: USD
- Brand: Waterdrop
- Model: WD-F26B
- Category: Home & Kitchen > Appliance Parts & Accessories > Water Filters & Cartridges
- Price: 26.99 USD
- Previous price: 29.99 USD
- Discount: 10%
- Price checked: 2026-11-12T09:58:56.086Z
- Rating: 4.7 / 5
- Reviews: 157

Prices and deal status are the latest recorded data, not a guarantee of availability. Confirm the price and availability with the store.

## At a glance

- Listed as a replacement for Bosch 640565 and several other refrigerator-filter models.
- The listing claims NSF 42 and NSF 372 certifications and chlorine reduction.
- Recommended service interval is six months or 300 gallons, whichever comes first.
- The installation description says no tools are needed and includes instructions to flush water through the dispenser after fitting.

## Pros

- The listed compatibility covers several filter families, including Bosch 640565, Cuno CS-52 and Whirlpool WHKF-R-PLUS.
- Month-install stickers are listed as a way to track when the filter was installed.
- The stated replacement interval gives buyers both a time and volume limit to monitor.

## Specifications

### Identity
- Brand: Waterdrop
- Model: WD-F26B
### Dimensions and installation
- Dimensions listed: 7.48"D x 2.6"W x 9.45"H
- Weight listed: 10.56 ounces
### Materials and protection
- Material listed: Lead-Free Material, Food-Grade Material, Advanced Activated Coconut Carbon Block

## Before you buy

- Compatibility is model-specific. Compare your refrigerator's required filter number with the listing's compatibility information before ordering. The listed filter specifications and certifications are manufacturer claims.

## In the box

- Month install stickers (Included)
- 3 refrigerator water filter replacements (Included)
- 1 user manual (Included)

## A good fit for

- Owners of refrigerators that require Bosch 640565 or another specifically listed compatible filter.
- Buyers who want installation-date stickers and a stated six-month or 300-gallon replacement interval.

## Less suited to

- Buyers whose refrigerator filter number is not confirmed as compatible with the models listed.

## Customer feedback

Customer feedback highlights reported fit, functionality and taste, with customers also describing the filter as good value. These perceptions may matter to buyers replacing a compatible refrigerator filter, but they do not establish compatibility for every refrigerator model. Aggregate ratings are generally favorable, though ratings alone do not explain individual experiences.
- Positive themes: Customers report good fit and functionality.
- Positive themes: Customers appreciate the taste and value for money.

## Frequently asked questions

### Which refrigerator filters is the WD-F26B listed to replace?
The listing names Bosch 640565, Cuno CS-52 and CS-51, Whirlpool WHKF-R-PLUS and other filter numbers. Confirm the exact filter model required by your refrigerator before buying.
### How often should this filter be replaced?
The listing recommends replacing it every six months or 300 gallons, whichever comes first. It notes that water conditions can affect service life.
### What should I do after installing the filter?
The listing instructs users to run water through the dispenser for five minutes at 0.5gpm \(about 2.5 gallons\) to clear the system and prevent sputtering.

## Alternative options

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## Images

![Waterdrop CS-52 Refrigerator Water Filter, WD-F26B — 1](https://best-deals.pro/i/JWK_GMv7b3248ZAH4MxfsAuGvjVRCr4Mgt3FVyqkDa29wz-3pVAs87P6t0Dq4jQUTb0fIstHFNyS3y-uwpfuxreq1o6wIQgls7-asNZo75-WR80HTGAZJB8m.jpg)

![Waterdrop CS-52 Refrigerator Water Filter, WD-F26B — 2](https://best-deals.pro/i/-xz7gGKvtrZzpYAlgnlWuKRG6h1RXLGt1-XfWC6Q0vLXWVIlmrJnTFG_18GwJziJVkLJR8O-V6qNGVgIcDjOJgIZGvnNNdCh5LzuFeFIhwDugZAB9vpbhtmB.jpg)

![Waterdrop CS-52 Refrigerator Water Filter, WD-F26B — 3](https://best-deals.pro/i/FgH9FDPLejCxR9VAN8vomtmrB8uDWWtzpnRUrnUzHT2qVptKgGJOHmDMnZr3YSzrWCiQiiSOb_uvT1ht_R-vXPr5jU0KOZjnQbLXr4saJ_Bd0NPNfQblTnfJ.jpg)

![Waterdrop CS-52 Refrigerator Water Filter, WD-F26B — 4](https://best-deals.pro/i/AQ8lKP4kvJorGY8sQfW-F13FwW54tmfaOSzbl0tS7uMfGhTJtj6beP8cLwm6e8TV4CQBVqIohhaC4pf4pFvFkuogSxjYpxb7vgpkAaKLWHhTUEIv8UO1X1UA.jpg)

![Waterdrop CS-52 Refrigerator Water Filter, WD-F26B — 5](https://best-deals.pro/i/9gEf3uABqYksX7DYPCIjDlw03WGSu-nptHnNiCdqTD4k3qu119yKertq_fLVtnNaUXfEwXxXqknyGwngrrAHUMwPfE67jD6P1AKiSFMbqHvobl5fEH1276wu.jpg)

![Waterdrop CS-52 Refrigerator Water Filter, WD-F26B — 6](https://best-deals.pro/i/GkVf6vz6dI42ZzbVYqQkMEH08zqP-P1Hl6C0CWPgecTyPS46SLM3sKDEYGHZvuCjxsrLkWfD_6cxPv_naOBCGy3a7SmBA4Ha2Mvooggr3_C39Vid4x3TQai7.jpg)

![Waterdrop CS-52 Refrigerator Water Filter, WD-F26B — 7](https://best-deals.pro/i/8YJHuLmY1ZO9L_EamK-XYfyq3oLWxS5rTVI_V7Ujbwm00oIQChIuGXSUUCR6J1yEHlOlyxT6wEGrXhd1DvT2nbGuWkwj3EQc_SFlVinH5dd-4mLoa9NuI-xW.jpg)