aFe MagnumFLOW Air Filters OER PDS A/F PDS VW Jetta/Golf 09-12 L4-2.0L (tdi)

Cleaner Airflow Into Your Engine Starts With the Right Filter

The aFe Magnum FLOW air filter 31-10172 is a high-flow replacement filter built to outperform the factory paper element in both filtration efficiency and airflow. Engineered from progressive density filtration media, this filter delivers measurably higher flow rates than stock while maintaining the filtration needed to protect your engine. The 31-10172 installs directly into your factory airbox in minutes using no tools, making it the fastest upgrade you can make to your intake system.

Key Features

• Filter media: progressive density filtration media for superior flow and filtration balance
• Drop-in direct fit for your factory airbox, no modification needed
• Reusable and washable for extended service life
• Higher flow rate than OEM paper element
• Precision-molded sealing edge for leak-free installation
• Backed by aFe Power limited manufacturer warranty

Fitment

Specifications

What's Included

• aFe Magnum FLOW replacement air filter (31-10172)

Frequently Asked Questions

Under normal conditions, clean and re-oil your aFe Magnum FLOW filter every 30,000 to 50,000 miles. In dusty environments, inspect it more frequently. Always use aFe Power's dedicated cleaning and oiling kit for proper maintenance.

Yes. The 31-10172 flows significantly more air than the factory disposable paper filter, allowing the engine to breathe more freely. In combination with a full intake system, gains are more pronounced, but a filter upgrade alone delivers measurable improvement in throttle response.

Yes, it is possible to apply too much oil when reconditioning a wet-media filter. Always apply oil lightly and evenly, allow it to wick for 20 minutes, and blot any excess before installation. The Magnum FLOW .

Yes. The 31-10172 is precision-molded to the exact dimensions of the OEM filter element. It drops directly into your factory housing and seals against the factory airbox lid without any trimming or modification.

Over a typical ownership period, a reusable aFe filter costs less to maintain than buying replacement OEM paper filters every 15,000 to 20,000 miles. It also consistently outflows the OEM element throughout its service life rather than degrading as the paper loads up with debris.

Under the Magnuson-Moss Warranty Act, a dealer must demonstrate a direct causal link between your aftermarket filter and a specific failure to deny a warranty claim. A high-flow air filter cannot be used as a blanket reason to void your powertrain warranty.

This is a drop-in filter designed for use in a factory airbox. If you are building a full cold air intake, aFe Power offers intake systems designed around their filter canisters. Contact us to find the correct intake system for your build.

aFe Power provides a limited manufacturer warranty on materials and workmanship. As a reusable filter, warranty claims related to improper cleaning or oiling are excluded. Contact aFe Power or us for current warranty documentation.

Installation Overview

1. Open the factory airbox cover by releasing the spring clips or removing the mounting bolts
2. Remove the OEM paper filter element from the airbox
3. Inspect the airbox interior for debris and wipe clean with a dry cloth
4. Place the aFe 31-10172 filter into the airbox, seating the rubber gasket edge fully against the housing
5. Close the airbox cover and secure all clips or fasteners
6. Start the engine and confirm normal idle before returning to service

WARNING: This product can expose you to chemicals including lead and phthalates, which are known to the State of California to cause cancer and reproductive harm. For more information go to www.P65Warnings.ca.gov.