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

Price: $20.99
Availability: In Stock
Fits refrigerators using the Sanitary Quick Change filter system
Choose a quantity
  • 1 Filter $20.99  
  • 2 Filters Price: $19.99 each
  • 3 Filters Price: $18.99 each
  • Serves clean tasting water and ice!
  • Reduces chlorine, sediment and rust
See more product details
The Tier1 RWF1100 refrigerator water filter compares to the Bosch 640565, Bosch CS-52 and the Whirlpool WHKF-IMPLUS water filter models, reducing contaminants and impurities for less, for up to six months or 300 gallons. Drink and serve only the finest water and ice!

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 Qty 1
Used In Brands Bosch, Tier1
Manufacturer's Id RWF1100
UPC 635510407683
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 Media Activated Carbon Block
Filter Life (gallons) 300
Filter Life (liters) 1,135.62
Filter Life (months) 6 months
Micron Rating (Nominal) 0⋅05
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
Certifications Filter cartridge has been Tested and Certified by NSF International against NSF/ANSI 42 for materials and structural integrity requirements
Warranty Guarantee Unconditional Product Guarantee for Life of the Product
Primary Filter Media Activated 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


Installation Guide


  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