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Restore Lost Airflow to Your aFe Momentum Intake with a Fresh Pro 5R Filter
Every conical air filter eventually loads up with dirt and loses some of its airflow efficiency, and swapping in a fresh filter is one of the simplest ways to keep an intake system performing like new. This aFe Momentum replacement filter uses Pro 5R oiled cotton gauze media in a 3-1/8in inlet flange by 6in height configuration, matching the sizing used across a range of aFe Momentum intake systems. The red powder-coated wire support gives it the recognizable aFe look while providing dependable filtration and airflow.
Key Features
- Pro 5R oiled cotton gauze media for strong filtration and airflow
- 3-1/8in inlet flange diameter by 6in overall height
- Reusable and washable for long-term cost savings over paper filters
- Red finish matches aFe Momentum intake systems
- Direct replacement sizing for compatible aFe Momentum intake kits
Specifications
| Detail | Value |
|---|---|
| Brand | aFe Power |
| Part Number | 20-91211R |
| Media Type | Pro 5R Oiled Cotton Gauze |
| Inlet Flange | 3-1/8 in |
| Filter Height | 6 in |
| Color | Red |
| UPC | Not assigned by manufacturer |
What's Included
- 1 x aFe Power Pro 5R replacement air filter
About aFe Power
aFe Power designs intake, exhaust, and filtration products engineered to improve airflow and performance across a wide range of vehicle platforms.
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FAQ
What is the aFe 20-91211R replacement filter?It's a Pro 5R oiled cotton gauze replacement air filter sized at a 3-1/8in inlet flange by 6in height, designed to fit compatible aFe Momentum intake systems.
Is this filter reusable?Yes, Pro 5R media is a washable, reusable cotton gauze filter rather than a disposable paper element.
How often should I clean this filter?Cleaning frequency depends on driving conditions, but checking it every 15,000 to 30,000 miles or per aFe's cleaning kit instructions is a reasonable starting point.
Will this fit any aFe intake system?It's sized for aFe Momentum intakes using a 3-1/8in inlet flange and 6in height; confirm your specific intake's filter dimensions before ordering.
Do I need a special cleaning kit for this filter?aFe recommends using a dedicated air filter cleaning and re-oiling kit designed for oiled cotton gauze filters.
Can this filter be used on a non-aFe intake?If another intake uses the same 3-1/8in flange and 6in height dimensions, this filter may be compatible, but fitment should be verified first.
Does the red color affect filter performance?No, the color is cosmetic and does not impact filtration or airflow performance.
Is this filter washable with water?Yes, oiled cotton gauze filters are typically cleaned with a specific cleaning solution and rinsed with water per the manufacturer's instructions.
Install Instructions
- Loosen the clamp securing the current filter to the intake tube
- Remove the old or worn filter from the intake
- Inspect the intake tube opening for debris before installing the new filter
- Slide the aFe Pro 5R replacement filter onto the intake flange
- Tighten the clamp securely to prevent unfiltered air from entering the intake
California Proposition 65 Warning
WARNING: This product can expose you to chemicals including carbon black, which is known to the State of California to cause cancer. For more information, go to www.P65Warnings.ca.gov.
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