Airman 3422004901, direct aftermarket replacement. This separator is an aftermarket separator designed as a direct replacement for units from leading brands including Airman, Denyo, Donaldson, and Furukawa. With a total height of 186 mm, outer diameter of 124 mm, and smallest inner diameter of 73 mm, this separator weighs 1.51 kg. It is built to the original dimensions and ratings, offering reliable performance for industrial filtration systems. Ideal for maintaining air intake quality in compressors and generators, this component ensures efficient separation of contaminants.
Technical properties & cross references
Specifications
| Total Height |
186 mm (7 5/16") |
| Product Net Weight |
1.51 kg (3.33 lbs) |
| Smallest Inner Diameter |
73 mm (2 7/8") |
| Outer Diameter |
124 mm (4 7/8") |
| Stat. HS-Code |
84149000 |
| Country of Manufacture |
China |
Price beat guarantee
We check what other aftermarket sellers charge for this same part. Their prices on the date we checked:
| Seller |
Price |
Checked |
| Oxfil |
USD 57.16 |
16 Oct 2026 |
| The Air Market |
USD 107.52 |
15 Oct 2026 |
| FilterFinder Online |
USD 114.00 |
15 Oct 2026 |
| Spare Part Mart |
USD 45.73 |
Today |
Our price of USD 45.73 is 20% to 60% less than these sellers.
Found this part cheaper somewhere else? Send us the listing and we will beat it by 5% under our Price Beat Guarantee. Every order is also covered by our 30 day money back guarantee.
Use cases & applications
Heavy-Duty Construction Sites
In dusty construction environments, the separator prevents debris from entering the engine air intake, extending service intervals and reducing wear on downstream filters.
Continuous Generator Operation
For generators running 24/7, this separator maintains consistent airflow, preventing power drops and minimizing unplanned downtime.
Remote Mining Operations
In remote mining sites where filter replacement is logistically challenging, the durable construction of this separator allows longer operation between changes.
Fleet Maintenance Consolidation
Fleet operators can standardize on this single separator model across multiple equipment brands, simplifying inventory management and reducing stock holding costs.
Frequently asked questions
How do I confirm this separator fits my equipment?
Check your existing separator's dimensions: total height 186 mm, outer diameter 124 mm, and smallest inner diameter 73 mm. This separator is a direct replacement for separators from brands like Airman, Denyo, Donaldson, and Furukawa.
What is the filtration rating or media type?
This separator uses a standard separation media designed for pre-cleaning intake air. It captures large particles before they reach the main filter, extending its life. For specific micron ratings, please consult your equipment manual.
Will the threads and dimensions match my existing separator?
The outer diameter is 124 mm, smallest inner diameter is 73 mm, and total height is 186 mm. These dimensions match many common separator models. Verify your current part's dimensions to ensure a proper fit.
Is this an OEM or genuine part?
This is an aftermarket separator built to the original dimensions and ratings. It is a cost-effective alternative to branded parts from manufacturers like Donaldson or Airman, offering reliable performance at a lower price.
How do I install the separator?
Installation is straightforward: remove the old separator and replace it with this separator, ensuring a secure seal. No special tools are required. Always refer to your equipment's service manual for safety procedures.