Home > News > Ram 1500 EcoDiesel Air and Cabin Filter Guide (68441763AA)
Ram 1500 EcoDiesel Air and Cabin Filter Guide (68441763AA)
The Filter Behind the Glovebox That Nobody Ever Looks At
Pull the cabin filter out of a used EcoDiesel and you find out a lot about the previous owner. On the truck that prompted this guide it was still the factory element, still had the original print on the frame, and it came out stiff and grey with a ridge of road grit packed along one edge. The engine air filter in the airbox wasn’t much better — the pleats were loaded, and the sealing lip had gone hard.
Here’s the thing that makes this an easy miss: neither one of those filters makes the truck run badly enough for anyone to notice. A clogged cabin filter doesn’t throw a code. A partially loaded engine air filter just quietly trims the airflow and the turbo compensates. Nothing tells you. They only get changed when someone decides to look.
And on a 2020-2023 EcoDiesel there’s a second reason they get skipped: the engine air filter is not the same part as the one on the 2014-2019 truck, and the cabin filter is shared with three other platforms. Owners who buy by “Ram 1500 diesel air filter” online end up with the wrong element roughly as often as the right one.
This guide covers both filters, what they cost from every channel worth checking, and the two mistakes that account for most of the wasted money.
Why This Air Filter Is Not the One Your Buddy Bought
The 2020-2023 EcoDiesel is the Gen 3 engine — the one Ram built for four model years and then discontinued. It lives in the same truck body as the Gen 2, which is exactly what makes the parts confusion so easy.
The engine air filter is a different part number by generation.
- 2014-2019 (Gen 2) 3.0L EcoDiesel: 68190705AA.
- 2020-2023 (Gen 3) 3.0L EcoDiesel: 68441763AA.
They are not interchangeable. Mopar still sells both, and the two filters are different enough in dimensions that the wrong one will not seal the airbox — which matters more than it sounds. An air filter that doesn’t seal doesn’t filter. Dust bypasses the element, goes straight into the turbo, and sandblasts the compressor wheel a few grams at a time.
The cabin filter is the opposite story — it’s shared. The 68406048AA carbon cabin filter fits the Gen 2 and Gen 3 EcoDiesel, the 1500 Classic, and the heavy-duty Ram 2500/3500/4500/5500 trucks. Same element, same dimensions. That’s worth knowing, because it means you can buy the cabin filter with confidence even if you’re unsure which generation you have — the uncertainty is entirely on the engine air filter side.
There is one upside to the Gen 3 layout: the airbox itself and the six-screw arrangement around it are shared across most fifth-generation Ram 1500 engines, so the installation in this guide is the same job whether you’re under the hood of the EcoDiesel or a gas truck.
One more wrinkle worth knowing about: 68441763AA has been superseded, and Mopar’s own parts catalog shows a newer number in its place. If you order from a catalog that shows a “replaced by” line, follow it. The interchange works, but catalogs that don’t update these lines are the same catalogs that ship the wrong year’s element.
What You Actually Get: Two Small Filters Doing Two Unrelated Jobs
This is a two-filter kit, and the two filters have nothing to do with each other beyond sharing the word “air.”
The engine air filter — 68441763AA. This one protects the turbo. It’s a synthetic-media panel element with a molded polyurethane gasket that seals against the factory airbox, and the pleats are reinforced with longitudinal glue beads so the element can’t distort under intake vacuum. That last detail matters on a small-displacement diesel that spools hard: a filter that flexes under vacuum changes the restriction, and a changing restriction is what throws the MAF sensor’s math off.
The most common symptom owners report when the engine air filter is loaded is a P0101 mass airflow code — the sensor reading falls outside what the ECU expects for the airflow it thinks it’s getting. Alongside it you’ll usually notice a soft throttle off the line and a mileage drop of a mile or two per gallon. None of that is dramatic, which is the whole problem.
The cabin air filter — 68406048AA. This one is a particle filter with an activated carbon layer, and it’s the only filter on the truck that has anything to do with the smell of the cab. The electrostatic non-woven layer catches the fine stuff — dust, pollen, PM2.5 — and the carbon layer adsorbs diesel exhaust odor, which on a diesel truck is the part you actually notice.
Worth being precise about why the carbon layer is the whole argument on this filter: the factory-spec filter and every cheap replacement does the particle job, and only some of them do the odor job. A plain pleated cabin filter with no carbon layer stops dust and does nothing about diesel fumes. If you’ve ever wondered why your truck smells like the inside of a fuel can on a cold start, that’s the layer that’s missing.
Replacement intervals, in the order they actually come due:
- Cabin filter: every 12,000 miles or 12 months. This one comes due first and most owners hit the calendar before the odometer. Pull it at the one-year mark even if you’ve barely driven, and decide from what you see.
- Engine air filter: every 30,000 miles or 24 months under normal conditions. Dusty work, gravel roads, farm use and heavy towing pull that interval down hard — Doc’s Diesel puts the maximum at 12,000 miles, and plenty of owners in dusty conditions change at 10,000.
So the two filters this kit bundles run on genuinely different clocks, and the cabin filter is the one that will be overdue first. That’s the point of buying them together rather than on separate orders you won’t remember to place.
What You Actually Pay: Mopar, Doc’s, Amazon and eBay
Here’s the honest picture. Prices verified September 2026.
| Channel | What you get | Price |
|---|---|---|
| TruckTok kit (FI-R-19-03/18-04-1) | Engine air + carbon cabin filter | $39.60 |
| Doc’s Diesel, bought separately | DPA3462 air + D3705 carbon cabin | ~$39.98 |
| Mopar OEM, bought separately | 68441763AA + 68406048AA | ~$53–$56 |
| Mopar OEM air filter alone | 68441763AA | $23.95 (Geno’s) · $27.44 (Diesel Filters Online) · $28.27 (JeepPartsDeal, MSRP $41.35) |
| Mopar OEM cabin filter alone | 68406048AA | ~$24.31–$26.90 across online Mopar dealers (MSRP $35.00) |
| Doc’s Diesel air filter | DPA3462, 99.25% / 344.2g ISO 5011 | $19.99 |
| Doc’s Diesel cabin filter | D3705, carbon | $19.99 |
| Aftermarket air filter | LuberFiner AF3590 · Purolator TA35462 | $9.79 · $7.49 |
| Amazon white-label | Cabin filter, carbon, unbranded | ~$9.99–$18.86 |
| eBay | Mopar 68406048AA cabin filter | ~$18.80 |
| eBay | Carbon cabin filter + access door combos | ~$14.84–$15.43 (one listing shows 553 sold) |
| Doc’s Diesel 4-filter combo | Air + cabin + fuel + oil | $117.99 |
Three things worth saying plainly, including the one that isn’t in our favor:
First, we are not cheaper than Doc’s Diesel on a like-for-like basis. Doc’s sells its air filter and its cabin filter at $19.99 each, which lands within about forty cents of this kit. Anyone claiming a big price win there is stretching it. What the difference buys is one box instead of two orders, and the part numbers pre-matched to the Gen 3 airbox.
Second, the Mopar comparison is real. Bought separately from an online Mopar dealer, the same two filters run roughly $53 to $56. The kit at $39.60 is about 25 to 30 percent under that, and it’s the comparison we’d actually stand behind.
Third, the $9.99 filters are a different product. A $9.99 unbranded cabin filter is typically a thin single-layer element, and on the air filter side a $7.49 Purolator or $9.79 LuberFiner is a legitimate budget element — they’re real brands and they filter. What you’re not getting at the bottom of that range is the carbon layer on the cabin side, or any published efficiency number. On a truck where the air filter’s job is protecting a turbocharger, “unknown spec” is the thing to avoid.
One more data point for anyone shopping the Doc’s listing: Doc’s sells a single air filter part number for the whole 2014-2025 range, and an Amazon reviewer with a 2020 EcoDiesel reported that element being too thick for the Gen 3 airbox. Mopar’s own catalog splits the filter by generation. When one aftermarket listing covers two generations of a platform where the OEM deliberately uses two part numbers, that’s worth a second look before you order.
What to Look For When Buying
1. Gen 3 (2020–2023) vs Gen 2 (2014–2019) Air Filter Cutoff. Verify your engine generation. 2020–2023 EcoDiesel (Gen 3) requires 68441763AA. 2014–2019 EcoDiesel (Gen 2 / Classic) uses 68190705AA. They are completely non-interchangeable.
2. Verify Part Numbers (68441763AA & 68406048AA). Cross-reference explicit OEM part numbers rather than relying on generic product photos.
3. Genuine Activated Carbon Layer for Diesel Odor. Ensure the cabin filter features a dark, bonded activated carbon layer (68406048AA / 68548579AA). Plain white paper cabin filters stop dust but fail to adsorb raw diesel exhaust odors.
4. Factory Access Door Verification. All 2020–2023 Ram 1500 New Body Style trucks feature a factory access door behind the glovebox, requiring zero cutting or modification.
5. Service Interval Alignment. Replace cabin air filters every 12,000 miles / 12 months and engine air filters every 30,000 miles (shortened in severe/dusty service).
Installation Guide: Step-by-Step Order
Neither of these jobs needs a socket set, a lift, or a diagnostic tool. That’s not an exaggeration — the engine air filter is a five-minute job and the cabin filter is about the same once you know the glovebox trick.
Step 1: Replace Engine Air Filter (68441763AA)
- Locate the airbox on the passenger side of the engine bay.
- Loosen the six captive 10mm bolts on the lid. (Note: Bolts remain attached to the lid to prevent dropping into the engine bay).
- Lift airbox lid, remove old filter, and vacuum out accumulated leaves and grit from the airbox base.
- Seat new 68441763AA filter with top black rubber sealing lip facing UP toward the lid, ensuring perimeter gasket seals flush in its channel.
- Hand-snug all six 10mm bolts evenly and verify MAF sensor connector is firmly clicked in.
Step 2: Access Cabin Air Filter Slot
- Empty lower glovebox contents.
- Slide the right-side damper cord clip down to unhook it, allowing it to retract gently.
- Squeeze both upper side stops inward while lowering the glovebox to release it from the dash.
Step 3: Replace Cabin Air Filter (68406048AA)
- Locate the rectangular access door stamped AIRFLOW behind the glovebox.
- Release side clips, remove door, and slide out dirty filter. Vacuum loose debris from housing cavity above blower wheel.
- Slide fresh 68406048AA carbon filter in with AIR FLOW arrow pointing DOWN toward the blower.
- Snap door back on until you hear two distinct clicks.
Step 4: Reassemble Glovebox & Verify Airflow
- Re-hook lower glovebox hinges, squeeze side stops past dash, and snap damper cord back into keyhole slot.
- Turn ignition ON, set HVAC blower to MAX, and verify strong, odorless airflow across all vents.
Five Expensive Mistakes
Mistake #1: Ordering Gen 2 (2014–2019) Air Filters for a Gen 3 Truck
Gen 2 (# 68190705AA) and Gen 3 (# 68441763AA) air filters have different housing dimensions.
Mistake #2: Replacing Air and Cabin Filters on the Same Schedule
Engine air filters last ~30,000 miles, while cabin filters load in ~12,000 miles.
Mistake #3: Buying Plain Paper Cabin Filters for Diesel Exhaust Smell
Plain paper filters stop dust but fail to neutralize raw diesel exhaust fumes and hot oil vapors.
Mistake #4: Cutting HVAC Case on 2020–2023 Ram 1500
All Gen 3 New Body trucks feature a factory door behind the glovebox; zero cutting required.
Mistake #5: Paying Dealership Labor for 5-Minute DIY Maintenance
Dealerships charge $75–$90 labor for simple top-side air filter replacements.
Frequently Asked Questions
Does this kit fit my 2020–2023 Ram 1500 EcoDiesel?
Yes. It fits 2020, 2021, 2022, and 2023 Ram 1500 trucks with the 3.0L Gen 3 EcoDiesel engine (New Body Style). It does not fit 2014–2019 Classic models.
Why do the engine and cabin air filters use different part numbers than the 6.7L Cummins?
Different airboxes entirely. The Gen 3 EcoDiesel sits in the 1500’s smaller, more compact airbox and takes the 68441763AA panel element. The heavy-duty 6.7L Cummins trucks use a much larger airbox and the 53034051AB panel. They’re unrelated parts that happen to be sold under similar descriptions.
Does the cabin filter 68406048AA fit other Rams?
Yes — that’s one of the odd parts of this platform. 68406048AA is shared across the Gen 2 and Gen 3 EcoDiesel, the 1500 Classic, and the Ram 2500/3500/4500/5500 heavy-duty trucks. It’s also cross-listed under 68535623AA and CF11671. So on the cabin side you have far less to worry about than on the engine air filter side.
Do I need tools for either filter?
The cabin filter needs no tools at all — it sits behind a factory access door in the glovebox area. For the engine air filter you’ll want a screwdriver, and on the fifth-generation Ram 1500 airbox a drill will spin five of the six captive screws but won’t fit the one at the back, so bring a hand driver as well.
My truck is a 2019. Which generation is it?
If it’s a 2019 Ram 1500 Classic, it’s Gen 2 and takes the older air filter — 68190705AA. If it’s the 2019 New Body Style with the EcoDiesel, it’s Gen 3 and takes 68441763AA. The Classic carried the previous body and the previous airbox forward for several years, which is why the model year alone doesn’t answer the question. The good news is that the cabin filter is 68406048AA either way and the glovebox procedure is identical, so the generation question only affects the engine air filter.
Can I just clean and reuse the engine air filter?
No. It’s a disposable synthetic-media element, and blowing it out with compressed air can open the media and let debris through — the opposite of what you want. Replace it.
How do I know if the engine air filter is actually due?
Without a restriction gauge, you go by mileage and conditions — 30,000 miles under normal use, and much sooner in dust. If you want a signal from the truck, a P0101 mass airflow code with soft throttle response and a small mileage drop is the usual one, but by then the filter is well past due.
Are the cheap cabin filters on Amazon and eBay safe to use?
A cabin filter is not a critical part — it doesn’t protect the engine, and a thin one won’t damage anything. What it won’t do is remove odors if it has no carbon layer. It’s the engine air filter where cheap and unbranded gets genuinely risky, because that filter’s job is keeping abrasives out of the turbocharger.
How often should I change the cabin filter?
Every 12,000 miles or 12 months, whichever comes first. Owners who pull theirs at the one-year mark routinely find them visibly loaded regardless of mileage. On this truck, the calendar is the number that matters most.
Should I change both filters at the same time?
They run on different clocks — the cabin filter on 12,000 miles and the engine air filter on 30,000 — so they don’t naturally come due together. Buying them as a pair is about having both on hand rather than matching the intervals. If you’re already doing the 30,000-mile service, this is the natural moment to do both.
What about the fuel and oil filters?
Those are the other half of the service schedule and they’re tracked separately. The 2020-2023 EcoDiesel fuel/water separator is 68436631AA and the oil filter is the 68507598AA cap assembly, changed at 10,000 miles with the oil. The air and cabin filters covered here are the pair most owners let slide.
Do these filters affect fuel economy or performance?
The cabin filter has no effect on the engine at all. The engine air filter can, if it’s loaded enough to restrict airflow — owners report roughly a one to three mile-per-gallon change after replacing a badly clogged element, mostly because the ECU stops compensating for the restriction.
What are the cross-reference part numbers?
Engine Air Filter: 68441763AA, DPA3462, Wix 42725, LuberFiner AF3590.
Cabin Air Filter: 68406048AA, 68548579AA, 68535623AA, CF11671.
How often should I change each filter?
Engine Air Filter: Every 30,000 miles (12,000–15,000 miles in dusty conditions).
Cabin Air Filter: Every 12,000 miles or 12 months.
Get Both Filters, in One Box
If your EcoDiesel is still running the air filter it left the factory with — or you’ve never opened the glovebox panel — this is the cheapest correction in the entire maintenance schedule, and it’s the one with no warning light attached.
One order covers the Gen 3 engine air element and the carbon cabin filter, both matched to the 2020-2023 truck:
Want to check fitment against what other owners are running, and confirm the generation question for your truck? These threads are worth reading:
- 2020-2023 3.0L Ram 1500 EcoDiesel Air Filter — Replaces 68441763AA
- 2010-2024 6.7L Dodge Ram Cabin Air Filter — Replaces 68406048AA
Legal Disclaimer
This guide is for general informational purposes only and is not a substitute for your vehicle’s factory service manual or the advice of a qualified diesel technician. Always verify the correct part numbers for your specific model year, VIN, and configuration before purchasing or installing filters. Installation of any aftermarket or replacement part is performed at your own risk; the author and retailer assume no liability for damage, injury, or loss arising from the use of this information or the products referenced. Filter change intervals are manufacturer recommendations and should be adjusted for your driving conditions, towing load, and fuel quality. Pricing was verified in September 2026 and is subject to change.
