This is aFe's Magnum FLOW Inverted Replacement Air Filter, the IRF, with oil-free Pro DRY S media, for 2003-2024 Dodge and Ram trucks running the 5.9L and 6.7L Cummins inline-six diesel. The inverted construction is what distinguishes it: the element is built with 100% polyurethane on all four sides for an airbox that seats the filter the other way up, and it uses two layers of progressively finer mesh synthetic media rather than the three-layer stack in aFe's standard OE replacement panel. Being a dry filter, it needs no oil at service time, so there is no risk of over-oiling a mass airflow sensor. It is washable and reusable through multiple cleaning cycles, and the tall, open, evenly spaced pleats hold a lot of dust before airflow suffers, which stretches the interval between cleanings. An integrated urethane bump seal gives a leak-free fit in the housing over the filter's life. It drops into the factory airbox with no modification and no tune. One fitment note from aFe: this filter does not fit vehicles equipped with the RAM Active Air System, check your truck before ordering. aFe states this product does not require a CARB EO number. If you want the standard-orientation OE replacement panel with a foam pre-filter instead, that is part number 31-10102. Inverted Replacement Filter (IRF) construction, 100% polyurethane on all four sides Pro DRY S media, oil-free, no oiling at service, no risk to the MAF sensor Two layers of progressively finer mesh synthetic media Washable and reusable for multiple cleaning cycles Tall, open, evenly spaced pleats for dust-holding capacity and longer service intervals Integrated urethane bump seal for a tight, no-leak fit Outflows the stock paper filter Direct drop-in replacement in the factory airbox, no modification and no tune required Covers 2003-2024 Dodge / Ram diesel trucks with the 5.9L and 6.7L Cummins inline-six Does NOT fit vehicles equipped with the RAM Active Air System aFe states this product does not require a CARB EO number
Specifications
| Type | Inverted Replacement Filter (IRF) |
| Media Type | Pro DRY S - two layers of progressively finer mesh oil-free synthetic media |
| Construction | 100% polyurethane on all four sides with an integrated urethane bump seal |
| Direct Fit | Yes - drops into the factory airbox, no modification. Does not fit vehicles with the RAM Active Air System |
| Tune Required | No |
| Emissions Status | Does not require a CARB EO number |
| Filter Media | Non-Woven Synthetic |
| Filter Color | Gray |
| Filter Efficiency | 99.2 Percent |
| Washable | Yes |
| Fitment Notes | Dodge Ram 2500 2003-2010, Dodge Ram 3500 2003-2010, Dodge Ram 4500 2008-2010 and 1 more: L6-6.7L (td); Dodge 2500 2011-2012, 2019-2023: V8-6.4L; Dodge 3500 2011-2023, Dodge 4500 2011-2012, 2014-2023, Dodge 5500 2011-2012, 2019-2023: L6-6.7L (td) . |
| Part Number | 31-80102 |
This part fits:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2003, 2005-2010 | Dodge | Ram 2500 | Laramie |
| 2003-2010 | Dodge | Ram 2500 | SLT |
| 2003-2010 | Dodge | Ram 2500 | ST |
| 2008-2010 | Dodge | Ram 2500 | SXT |
| 2006-2007 | Dodge | Ram 2500 | Sport |
| 2010 | Dodge | Ram 2500 | TRX |
| 2006-2007 | Dodge | Ram 2500 | TRX4 |
| 2003-2010 | Dodge | Ram 3500 | Laramie |
| 2003-2010 | Dodge | Ram 3500 | SLT |
| 2003-2010 | Dodge | Ram 3500 | ST |
| 2008-2009 | Dodge | Ram 3500 | SXT |
| 2006-2007 | Dodge | Ram 3500 | Sport |
| 2007 | Dodge | Ram 3500 | TRX4 |
| 2013-2023 | Ram | 2500 | Big Horn |
| 2011-2023 | Ram | 2500 | Laramie |
| 2014-2015 | Ram | 2500 | Laramie Limited |
| 2011-2021 | Ram | 2500 | Laramie Longhorn |
| 2016-2023 | Ram | 2500 | Limited |
| 2021-2023 | Ram | 2500 | Limited Longhorn |
| 2013-2015, 2019-2023 | Ram | 2500 | Lone Star |
| 2012-2016 | Ram | 2500 | Outdoorsman |
| 2019-2023 | Ram | 2500 | Power Wagon |
| 2023 | Ram | 2500 | Rebel |
| 2011-2018 | Ram | 2500 | SLT |
| 2011-2013 | Ram | 2500 | ST |
| 2013-2023 | Ram | 2500 | Tradesman |
| 2013-2023 | Ram | 3500 | Big Horn |
| 2011-2023 | Ram | 3500 | Laramie |
| 2014-2015 | Ram | 3500 | Laramie Limited |
| 2011-2020 | Ram | 3500 | Laramie Longhorn |
| 2016-2023 | Ram | 3500 | Limited |
| 2021-2023 | Ram | 3500 | Limited Longhorn |
| 2013-2015, 2017, 2019-2022 | Ram | 3500 | Lone Star |
| 2011-2023 | Ram | 3500 | SLT |
| 2011-2013 | Ram | 3500 | ST |
| 2013-2023 | Ram | 3500 | Tradesman |
Shipping
- Orders placed before 3 PM EST typically ship the same business day. Larger items ship within 1 to 3 business days.
- Standard, expedited, and overnight options at checkout.
- Oversized items ship by freight and take longer.
- Special order items follow a lead time we confirm with you individually before the order is committed.
- Backordered items ship as soon as stock lands. Lead times are manufacturer estimates and can change. Contact us for current ETAs.
- Need to cancel? Email us right away. Cancellations are not guaranteed once an order is in process. In-stock orders cancel free before they ship; a 6% fee applies only to confirmed backorders and special orders.
- International orders: prices do not include VAT, duties, or import fees. Your country charges these at import and they are the buyer’s responsibility.
Returns
- 30 days from delivery to request and ship back a return on new, uninstalled items in original packaging with all hardware.
- Standard returns: 8% restocking fee on the item price before tax and shipping. Shipping is not refunded in either direction. All waived if the item is defective or we made the error.
- Fitment guaranteed: select your vehicle above, or confirm fitment with us in writing before you order. If the part shows as a fit and it is wrong, the return is on us, even after installation. Otherwise, installed or used parts cannot be returned.
- Final sale: special orders, coilovers, electronics, engine internals, turbochargers, superchargers and turbo kits, unless defective or we sent the wrong item.
- Product images may be representative. The SKU and specifications in the listing are what ships.
- Email us for return authorization before shipping anything back.
Full details: Shipping Policy · Returns & Refunds · Warranty






