Bosch / 3M CS-52 / 55866-05 Refrigerator Water Filter

The 3M / Cuno CS-52 Refrigerator Water Filter fits Bosch refrigerators that use the Sanitary Quick Change filter system. The Bosch CS-52 is also the Dual Action Filter Replacement for CS-452.

The 3M CS-52 refrigerator/icemaker water filter replaces the following older filter part numbers:

• 1257074, 5586605, 55866-05, 55866-06, 640565
• AP3961137, B20CS5, B20CS8, CS-450, CS-451, CS-452, CS-51, CS-52, CS52, EVOLFLTR10
• Evolution 500 Series, B20CS50SN
• Evolution 800 Series, B20CS80SN

Specifications

• Filter Life: 6 months or 1,500 gallons (whichever comes first)
• Flow Rate: 0.5 gallons per minute
• Operating Pressure: 25-125 psi
• Operating Temperature: 40-100 °F
• Micron Rating: 5 microns
• Filter Size: 8-1/4“ (Length) x 2-1/2“ (Diameter)
• Country of Origin: U.S.A.

The 3M / Cuno CS-52 / 5586605 filter cartridge replacement is tested and certified by NSF International to meet or exceed NSF/ANSI Standard 42 for the reduction of:

• Chlorine
• Taste and odor
• Sediment
• Particulates (Class I)

	Price	Contaminant Removal	Certification / Country of Origin	Staff Review
3M CS-52	$33.99	Chlorine: Yes Lead: No Mercury: No Cysts: No Particulates: Yes Turbidity: No	NSF 42 / USA	The CS-52 filter is an alternative filter for the Bosch 640565. The CS-52 is made by 3M Purification while the Bosch 640565 is made by Cuno. However, because Cuno is a 3M Purification brand, it is safe to assume these filters are similar in quality. Even though this filter only carries NSF 42 certification, many customers have been quite happy with it. Several customers have also claimed that this filter is a bit easier to change, which may be due to its ergonomic design at the bottom of the filter.
Bosch 640565	$37.49	Chlorine: Yes Lead: Yes Mercury: Yes Cysts: Yes Particulates: Yes Turbidity: Yes	NSF 42 & 53 / USA	The original Bosch 640565 filter is made by Cuno and is certified to meet NSF standards 42 & 53, which means it removes not only chlorine but additional contaminants like lead, cysts, and mercury. If you want a genuine Bosch filter with reliable certification, we recommend this filter.
WaterSentinel WSB-1	$18.95	Designed to meet or exceed the performance of the 640565 filter	None / USA	A quality, compatible filter for the Bosch 640565. This “Made in USA” filter utilizes superior carbon block filtration. The filter has also been tested internally to meet NSF Standard 42 for chlorine reduction. An effective alternative at an economical price.