Woder Advanced Replacement Cartridge 8K (Gen4)

Original price was: $58.Current price is: $48.

We will ship our improved new Gen4 WD-G4-REP. WD-S-8K (Gen3) is available on backorder. Learn more...

Our Gen3 systems and cartridges (this includes the WD-S-8K WQA Gold Seal Certified Cartridge) are currently on a backorder (due to Wording error on the Gen3 labels). We have no intention to discontinue this excellent product line!
We hope it will be available in June 2023.
Our Gen4 WD-G4-REP is an alternative to the WD-S-8K-REP (Gen3) and compatible with your system.  The mounting head is similar.
Please note: Your existing mounting head might be ‘married’ to the gen3 WD-S-8K-REP. When replacing from Gen3 to Gen4, at the stage of replacement, please check for leaks (less than 3%) and let us know.



WD = Woder.
S = Single Cartridge System.
8K = 8,480gallons. WQA Gold Seal Certified WD-S-8K.
REP = Replacement Cartridge.

Cartridge replacement instructions: PDF / Video





Woder Advanced filters are certified by WQA to NSF/ANSI 42 for Chlorine taste, odor and NSF/ANSI 372 for lead free compliance as verified and substantiated by test data.

Capacity: 8,480 Gallons. Capacity is depending on the levels of sediment found in your tap water.

Removal Capabilities: Our Advanced Woder WD-S-8K-REP Cartridge removes 99.9% of lead, heavy metals, chlorine, chromium 6, mercury, volatile organic compounds, carcinogens, and other contaminants, turbidity, odor and bad tastes. (claims tested by CLB Labs and are not certified by WQA)

The WD-S-8K-REP is a single stage replacement cartridge for:

Woder WD-S-8K-ADV-DC Water Filter.
Woder WD-S-8K-ADV-JG Water Filter.

The WD-S-8K-REP is the second (last) stage replacement cartridge for the following dual stage systems:

Woder WD-D-8K-FRM-ADV-DC Water Filtration System.
Woder WD-D-8K-FRM-ADV-JG Water Filtration System.
Woder WD-D-HM-ADV-DC Water Filtration System.
Woder WD-D-HM-ADV-JG Water Filtration System.
Woder WD-D-20M-ADV-DC Water Filtration System.
Woder WD-D-20M-ADV-JG Water Filtration System.

Cartridge lifespan: 1 year under warranty.

Selective Filtration™
Our proprietary Selective Filtration™ technology removes 99.9% of contaminants while leaving in all essential minerals. Reverse Osmosis (RO) filters also remove 99.9% of contaminants, however, RO also remove ALL the minerals found in tap water – including minerals your body needs. RO systems can waste thousands of gallons of water annually while flushing out contaminants down the drain.

Shipping & Returns

If you are not entirely satisfied with your purchase, we're here to help.

Our products can be returned within 60 days of the original purchase date. A new product may be exchanged for another product or returned for a refund. A return for a refund will be a subject for 10% restocking fees.

To be eligible for a return, please make sure that the product was purchased in the last 60 days. The product isn't used or damaged. That you obtained a Return Merchandise Number (RMN) from us.

Even if your return and refund request does not meet the return policy requirements, please do not hesitate to contact us to submit an inquiry.

Submit a Returns Inquiry

Simple Installation

Clean water in less than 10 minutes.


Clean water in less than 10 minutes.

We’ve made installation easy for a reason: so you’re in control of your water. Get more install tips.