- Weight: 0.16 lb
- Includes a spanner wrench and two output filters
- Extremely easy to insert and remove
- Output filter should be replaced on an annual basis
- Note: This product only ships to addresses in the US
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MFR:
Inogen
Ships from Manufacturer
- MPN: RP-404
- Phone: (800) 695-7915
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Frequently asked questions
Where is the output filter located in the Inogen G4 or G5 oxygen concentrator?
The output filter is located behind the removable cannula nozzle fitting. The included spanner wrench provides easy access to this area for filter replacement.
Is this filter replacement kit compatible with oxygen concentrators from other brands besides Inogen?
The Inogen G4 and G5 Output Filter Replacement Kit is specifically designed for Inogen G4 and G5 oxygen concentrators. Using it with other models may not be suitable and could affect performance.
Does the kit contain all necessary maintenance components?
Yes, this replacement kit is designed as a complete maintenance package for the recommended annual replacement.
The Inogen G4 and G5 Output Filter Replacement Kit (MPN: RP-404) includes:
- Two (2) Output Filters: Essential components that protect the patient by filtering out small particulate matter, ensuring clean oxygen delivery.
- One (1) Spanner Wrench: A specialized tool included to simplify access to the filter bay (located behind the removable cannula nozzle fitting) for easy installation and removal.
Is filter replacement recommended annually?
Yes, the manufacturer recommends replacing the output filter on your Inogen G4 or G5 concentrator according to an annual timetable.
Regular replacement is essential for:
- Patient Protection: Ensures the filter continues to prevent small particles from reaching the oxygen therapy patient.
- Optimal Performance: Maintains the purity and quality of the delivered oxygen.
The replacement kit includes two new output filters and the specialized spanner wrench needed for easy installation.
How does replacing the output filter benefit oxygen therapy patients?
Replacing the output filter protects oxygen therapy patients by preventing them from inhaling small particles. This ensures that the oxygen delivered is clean and safe for use.
Why is output filter replacement essential?
Replacing the output filter is considered essential maintenance for your Inogen G4 or G5 oxygen concentrator. The filter’s crucial function is to ensure patient safety and maintain optimal performance by:
- Protecting the Patient: It filters out small airborne particles before the oxygen is administered, ensuring the purity of the delivered oxygen.
- Maintaining Air Quality: Regular replacement, recommended annually, prevents particle build-up and maintains the concentrator’s efficiency.
Which Inogen concentrators are compatible with this kit?
Yes, this replacement kit is specifically designed for Inogen G4 and G5 portable oxygen concentrators.
This crucial maintenance kit (MPN: RP-404) includes:
- Two replacement output filters.
- One specialized spanner wrench for accessing the filter bay.
Regular, annual replacement is recommended to ensure the purity of delivered oxygen and protect the patient from inhaling small particles.
Is this a new, high-quality product?
Yes, the Inogen G4 and G5 Output Filter Replacement Kit is a factory new product from the Inogen brand, ensuring high quality and performance.

Inogen G4 and G5 Output Filter Replac...