Best Apec Water Systems Undersink Water Filtration Replacement Parts in 2026
Daisy
Last Updated: Jan 23, 2026
Daisy
Last Updated: Jan 23, 2026
* PickSmartly editors independently research, review, and endorse the top products through comprehensive data analysis. We may earn a commission for qualifying purchases made through our product links.
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Amazon.com | 9.68 | ✅ | ✅ | ✅ |
IMPORTANT: A set of 3 O-rings for standard filter housings of APEC RO systems. Please kindly check the second gallery image for compatibility of this O-Ring set
Light weight, easy install and unload
Diameter 3.5 inch OD
Included components: O-RING-SET
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Amazon.com | 9.68 | ✅ | ✅ | ✅ |
Note : Please check the dimension and item weight of the product and confirm it fits your space
Connects APEC Water reverse osmosis systems to refrigerator ice makers for ultrapure water superior to fridge filters
Compatible with APEC STANDARD reverse osmosis systems model ROES-50, ROES-75, ROES-PH75, ROES-UV75, RO-45, RO-90, RO-PERM and RO-PUMP and most standard under-counter reverse osmosis systems using ¼” tubing and connectors
Enjoy clear, sparkling & delicious ice cubes and RO water at your fridge dispense
Includes 20' of 1/4 in tubing, 1 quick-connect T fitting & 1 quick-connect shut-off ball valve
John guest (JG) fittings & tubing for quick & easy installation by hand with no tools needed
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| APEC Water Systems | 8.54 | ✅ | ✅ | ✅ |
APEC Water Systems Drain Saddle Valve used with reverse osmosis (RO) systems
1/4" quick connect fittings allows easy tubing conections
Fits standard 1-1/4" to 1-1/2" diameter pipes
Fits all under counter water filter systems
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| APEC Water Systems | 8.54 | ✅ | ✅ | ✅ |
Check valve replacement part for APEC RO-90, RO-PH90, RO-PERM, RO-PUMP, ROES-50, ROES-75, ROES-PH75, ROES-PHUV75, ROES-UV75 and ROES-UV75-SS
Featured 1/4 inch quick connect
Fits all under counter water filter systems
Manufactured using certified materials
Light weight,easy to Install and unload
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| APEC Water Systems | 8.54 | ✅ | ✅ | ✅ |
APEC Water Systems 180° filter housing wrench for undersink system
Unique angle design is easier to use
Fits most standard filter housings
Manufactured using certified materials
Use to open filter housing
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| APEC Water Systems | 8.75 | ✅ | ✅ | ✅ |
Automatic Shut Off Valve for APEC Reverse Osmosis Systems Model RO-45, RO-90,RO-PH90,ROES-50,ROES-PH75,ROES-UV75.
1/4 inch Quick Connect
Light Weight,Easy Install and unload
Compatible with most Reverse Osmosis systems
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Amazon.com | 9.68 | ✅ | ✅ | ✅ |
Used with reverse osmosis (RO) systems
Fits standard 1/2" or 3/8" faucet pipes
Includes a 1/4" outlet needle valve to feed water to RO systems or water filter systems.
Manufactured using certified materials
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| APEC Water Systems | 8.54 | ✅ | ✅ | ✅ |
APEC Water Systems Drain Saddle Valve used with reverse osmosis (RO) systems Fits standard 1-1/4" to 1-1/2" diameter pipes
APEC Water Systems Feed Water Adapter used with reverse osmosis (RO) systems Fits standard 1/2" or 3/8" faucet pipes
Moving Kit Consists of saddle valve, drain valve & tube plug
Manufactured using certified materials
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Amazon.com | 9.68 | ✅ | ✅ | ✅ |
APEC Water Systems 10 inch white standard filter housing replacement part for all 10 inch standard industry reverse osmosis water filter system
1/4 inch quick connect
Includes 1 filter housing and 2 John Guest male connector 1/4 inch tube OD x 1/4 inch thread NPTF
Certified housings
Can host any industry standard sized 10 inch filters
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Amazon.com | 9.68 | ✅ | ✅ | ✅ |
Easily connect all industry standard 2”d inline filters onto your reverse osmosis system
This add on kit helps adding extra stage of filter to your current reverse osmosis system
Includes 2 clips, 2 x 1/4 inch quick-connect elbow fittings, 3 locking clips and 5 feet of tubing
John guest (JG) fittings, tubing and locking clips for quick & easy installation by hand with no tools needed
Manufactured using certified materials
Here is the list of top-rated brands that were evaluated by PM.
| Brand | Count |
|---|---|
| Apec Water Systems | 10 |
We've carried out a comprehensive analysis of 5,139 reviews on undersink water filtration replacement parts, using our selection criteria to identify the best options in the home improvement. Our findings reveal that most customers typically select undersink water filtration replacement parts priced around $13.74, with top brands including apec water systems, captain o-ring, replacementkits.com, aquasana, ispring, puroflo, koatukys, insinkerator and eshiong and kinetic wares
Our team of expert editors reviewed these high-quality items and handpicked the top 10 undersink water filtration replacement parts for your consideration. We've also done extensive research on numerous sellers, identifying the best ones in the home improvement category. These include amazon.com, apec water systems, captain o-ring llc, replacementkits, gws general water solution, kuncheka, nicole ravo, eshiong and kinetic wares llc and r2o water .
We are dedicated to assisting our users in finding the right parts Products based on their needs, saving them considerable time when choosing which undersink water filtration replacement parts to buy. We take pride in the number of satisfied users we've helped through our thorough and insightful reviews.
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