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640565 /CS-52 Bosch Comparable Refrigerator Water Filter Replacement By Tier1

Special Price $15.00 Special Price Everyday Price $32.99 Save 54% List Price Price $46.99 Save 29%
Availability: In Stock
Fits Bosch refrigerators that use the Sanitary Quick Change system
Choose a quantity
  • 1Filter$32.99 
  • 2Filters Price $32.00 each
  • 3Filters Price $31.04 each
  • 4Filters Price $30.59 each
  • 6Filters Price $29.69 each
  • Ships fast!
  • Reduces chlorine, sediment, dirt and more
  • Keeps your water tasting great for up to six months after easy installation!
› See more product details
  • Ships fast!
  • Reduces chlorine, sediment, dirt and more
  • Keeps your water tasting great for up to six months after easy installation!
The Bosch 640565, Bosch CS-52 and the Whirlpool WHKF-IMPLUS are comparable to the Tier1 RWF1100 discount filter. For up to six months after installation, this filter will reduce chlorine, dirt, sediment and more before they start to cause quality issues. Better yet, this affordably priced replacement filter helps to ensure you never pay more for clean drinking water than you should! Order this comparable replacement for the 640565 and CS-52 Bosch refrigerator water filters, from Tier1, today.

Experience the Tier1 Difference

Tier1 manufactures high-quality filtration and household products. We take creating and maintaining a healthy home seriously. Products must undergo rigorous testing and meet demanding quality expectations in order to earn the Tier1 badge. Every purchase is backed by the Tier1® Guarantee:

  • Guaranteed Fit
  • Guaranteed Quality
  • Guaranteed Price
Package Qty1
Used In BrandsBosch, Tier1
Manufacturer's IdRWF1100
Actual Size (in)8-7/8 inches (length) x 2-1/2 inches (height) 2-1/2 inches (width)
Actual Size (cm)22.5425 x 6.35 x 6.35
Primary Filter MediaActivated Carbon Block
Filter Life (gallons)300
Filter Life (liters)1,135.62
Filter Life (months)6 months
Micron Rating (Nominal)0.5
Operating Pressure (psi)30 - 125
Operating Temperature (°F)38 - 100
Operating Temperature (°C)3.3 - 37.8
Flow Rate (gpm)0.5
Flow Rate (lpm)1.89
CertificationsFilter cartridge has been Tested and Certified by NSF International against NSF/ANSI 42 for materials and structural integrity requirements
Warranty GuaranteeUnconditional Product Guarantee for Life of the Product
Primary Filter MediaActivated Carbon Block

Reduced Contaminants

The TIER1-RWF1100 reduces the following contaminants:

  • Chlorine Taste & Odor
  • Rust and Corrosion
  • Sand
  • Sediment
  • Silt
  • Turbidity

The TIER1-RWF1100 is comparable with the following part numbers

00640565 1257074 176346 2168701
55866-05 55866-06 5586605 5586606
56932 640565 70020002518 Aqua-Pure C-CS-S
AP3961137 B20CS5 B20CS8 C-CS-S
CS-450 CS-451 CS-452 CS-51
CS-52 CS52 CS450 CS451
CS452 EAP8729485 EVOLFLTR10 OCS CS52
OCS 55866-06 PD00005729 RWF-1100 RWF1100
SGF-BO50 SGF-BO52 Ultra-Ease UltraEase
W1085590 WF-297 WF297 WHCF-R-PLUS
WF297 WF-297 EFF-6026A EFF6026A
EFF6026 EFF-6026 RWF1100 RWF-1100
SGF-BO50 SGF-BO50 BO50 WD-640565 WD-CS-52

The TIER1-RWF1100 fits the following model numbers



  1. Note: Filter must be pushed firmly into receiver and turned until filter is locked in place. If filter is not locked correctly, water will not flow.
  2. DO NOT use any tools to install this filter
  3. Shut off water supply
  4. Twist the old filter a quarter-turn counterclockwise and remove
  5. Insert new filter into the refrigerator receiver, push the new filter until it stops
  6. Twist the filter a quarter-turn clockwise
  7. Reset water filter status display
  8. Flush filter with 3-4 gallons of with water until water runs clear. Some noise is not uncommon as air is purged from the system.
  9. If filter sits for several days without use, flush a quart of water through the filter to remove stale water from refrigerator water lines

Reset Instructions

  1. Press the water filter reset button and hold for 3 seconds