The 6.4L HEMI in the Charger Scat Pack and SRT 392 already breathes well from the factory, but the stock airbox is the first restriction most owners want gone. A proper cold air intake for the 392 Charger opens up airflow, sharpens throttle response and lets that big naturally aspirated V8 actually sound like 485 horsepower instead of a muffled appliance. The trick is choosing one that pulls genuinely cooler air, filters reliably and bolts on without a fight.
We focused only on intakes that are confirmed to fit the 6.4L 392 HEMI, not the 5.7L or the 6.2L Hellcat. Below are seven real options we ranked on measured airflow, intake air temperature management, filter quality, sound character and how clean the install really is. Every pick here is a part you can actually buy and bolt onto a Scat Pack or SRT 392 today.
| Photo | Product | Score | Buy |
|---|---|---|---|
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K&N 63 Series AirCharger Cold Air Intake (63-1571) Best Overall Roto-molded enclosed airbox, washable cotton-gauze conical filter, 6.4L 392 specific fitment |
9.5 | 🛒 Check Price |
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S&B Cold Air Intake (75-5106) Best Filtration Fully sealed airbox with clear lid, choice of dry or oiled filter, 99%+ efficiency rating |
9.3 | 🛒 Check Price |
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aFe Power Momentum GT Cold Air Intake (54-13027R) Best Engineering Sealed Momentum housing, Pro 5R oiled or Pro DRY S filter, rotomolded velocity-tuned tube |
9.2 | 🛒 Check Price |
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AIRAID MXP Series Cold Air Intake (351-338) Best Sound Sealed roto-molded box, SynthaMax dry or oiled filter, big-diameter intake tube |
9.0 | 🛒 Check Price |
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Spectre Performance Air Intake (9907) Best Value Heat-shield airbox, washable conical cotton filter, polished aluminum tube |
8.7 | 🛒 Check Price |
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Mopar Cold Air Intake Kit (77070045AC) Best OEM Fit Factory-engineered sealed airbox, conical filter, exact 6.4L 392 fitment |
8.5 | 🛒 Check Price |
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Volant Closed Box Cold Air Intake (16864) Best Heat Shielding Fully enclosed PowerCore or oiled filter box, rotomolded tube, sealed lid |
8.3 | 🛒 Check Price |
1. K&N 63 Series AirCharger Cold Air Intake (63-1571): Best Overall
K&N’s 63 Series AirCharger is the intake we keep coming back to for the 392 Charger because it nails the balance most owners actually want. The roto-molded enclosed airbox is the key, it shields the cotton-gauze cone from radiant engine heat so the air reaching your throttle body stays meaningfully cooler than an open filter parked in the bay. On a Scat Pack you get a noticeably crisper throttle tip-in and that signature naturally aspirated HEMI snarl that gets louder the harder you push, without turning into drone at cruise.
The honest weakness is maintenance. This is an oiled cotton-gauze filter, which means you reuse it for the life of the car but you also have to clean and re-oil it correctly. Get heavy-handed with the oil and you risk leaving residue on the MAF sensor, which can throw off readings. If you are the type who follows the cleaning kit instructions, that is a non-issue, and the long-term value of never buying another filter is hard to beat. For most 392 owners, this is the safe, high-performing default.
- Fully enclosed heat shield airbox keeps the filter sealed off from engine bay heat soak
- Reusable cotton-gauze filter cleans and re-oils instead of being thrown away
- Application-specific tube and clamps designed around the 6.4L 392 throttle body
Pros: Strong measured airflow gains with a deep, refined V8 growl under load; Enclosed box does a real job of feeding cooler air for stable intake temps; Backed by K&N's long warranty and proven on thousands of 392 builds
Cons: Cotton-gauze filter needs occasional re-oiling, and over-oiling can foul the MAF sensor; Louder intake roar may be more than commuter-focused drivers want
2. S&B Cold Air Intake (75-5106): Best Filtration
S&B built its reputation on filtration, and the 75-5106 brings that to the 6.4L 392 Charger. The standout feature is the fully sealed airbox topped with a clear lid, which is genuinely useful day to day because you can see exactly how dirty the filter is without pulling anything apart. S&B publishes independent efficiency numbers above 99 percent, so if you live somewhere dusty or just want maximum engine protection, this intake protects your HEMI better than almost anything else on this list while still flowing strong.
Where it gives a little ground is character. The sealed, well-engineered box trims some of the raw induction roar that owners chasing drama want, so it sounds purposeful rather than aggressive. The bigger airbox also takes a bit more patience to seat cleanly around the 392 engine bay. Pick the dry filter option and you sidestep oiled-filter MAF concerns completely, which makes this the smart choice for owners who care more about clean air and longevity than the loudest possible note.
- Large fully enclosed airbox with a clear top so you can eyeball filter condition
- Offered with either a dry media or oiled cotton filter to suit your maintenance style
- Independently evaluated filtration efficiency rated above 99 percent
Pros: Outstanding dust and dirt filtration without sacrificing meaningful airflow; Clear lid makes inspecting the filter quick and tool-free; Choice of dry or oiled media lets you skip MAF-fouling worries entirely
Cons: Slightly tamer sound increase than fully open or vented designs; Larger box can make the install feel tight around brackets and lines
3. aFe Power Momentum GT Cold Air Intake (54-13027R): Best Engineering
The aFe Momentum GT is the engineer’s pick for the 392 Charger. Instead of a single inlet, the sealed Momentum housing uses a dual-snorkel design that feeds the filter from two cool-air paths, which is part of why it manages intake air temperatures so well under sustained load. The roto-molded tube and velocity stack are tuned to the 6.4L throttle body, and the whole assembly looks and feels like something that could have come on the car from the factory. On a dyno it delivers consistent, repeatable gains rather than peaky numbers.
The cost of that sophistication is install complexity. With more parts, a larger sealed box and the dual-inlet routing, this takes longer to fit than a simpler open intake and demands a bit more care around the 392’s tight packaging. It is not difficult for anyone comfortable with hand tools, but it is not the ten-minute swap some kits are. If you want the most thoughtfully engineered intake here and do not mind spending an afternoon on it, the Momentum GT rewards the effort.
- Sealed Momentum airbox with dual-snorkel inlets that draw cool air from two paths
- Choice of Pro 5R oiled or Pro DRY S dry filter media
- Velocity-stack inlet and roto-molded tube tuned for the 6.4L throttle body
Pros: Sophisticated dual-inlet design pulls cool air efficiently for low intake temps; Genuinely premium fit and finish that looks like factory engineering; Both dry and oiled filter options available from one platform
Cons: One of the more involved installs on this list; Premium build sits at the higher end of effort and packaging space
4. AIRAID MXP Series Cold Air Intake (351-338): Best Sound
If your priority is making the 392 announce itself, the AIRAID MXP is the intake to grab. The combination of a large-diameter intake tube and a sealed roto-molded box lets the 6.4L breathe deeply, and the result is a very aggressive induction notes you can get on a Scat Pack or SRT 392. Stab the throttle and the HEMI roars in a way the stock airbox completely smothers. The SynthaMax dry filter is a bonus for people who hate the oiling routine, since it just washes out and air-dries.
That same character is the trade-off. The MXP is loud, and on a long interstate run the constant induction roar can wear on you in a way the more sealed, refined boxes do not. It flows beautifully and looks great under the hood, but it is unapologetically an enthusiast part. Buy it if you want your 392 to be heard, and look elsewhere if you mostly commute and want peace at 75 miles per hour.
- Sealed roto-molded airbox with a large-diameter intake tube for high flow
- SynthaMax dry filter option that never needs oiling
- Direct-fit 6.4L 392 design with reuse of factory mounting points
Pros: Aggressive, unmistakable HEMI induction note enthusiasts love; Dry SynthaMax filter means simple wash-and-go maintenance; Big tube and sealed box flow hard for strong top-end pull
Cons: The louder note can become tiring on long highway drives; Open-cell sound character is more aggressive than refined
5. Spectre Performance Air Intake (9907): Best Value
Spectre, which shares engineering DNA with K&N, makes the 9907 the practical value choice for 392 Charger owners who want real gains without overthinking it. You get a washable conical cotton-gauze filter mounted behind a heat shield and a good-looking polished aluminum tube that dresses up the engine bay. Install is genuinely easy, it reuses the factory mounting points, and most people have it on the car inside an hour. Throttle response sharpens up and the V8 gets a welcome bump in volume.
The compromise is that the heat-shield layout is not as fully sealed as the enclosed boxes higher on this list, so on a hot day sitting in traffic it is more susceptible to heat soak, where the filter pulls in warmer underhood air. For spirited street driving that gap is small, and once the car is moving fresh air feeds the filter just fine. As an easy, reusable, great-looking upgrade that punches above its position, the Spectre 9907 earns its spot.
- Open heat-shield design with a washable conical cotton-gauze filter
- Polished aluminum intake tube adds a clean engine-bay look
- Reuses factory mounting hardware for a straightforward bolt-on fit
Pros: Solid airflow and throttle response for a very accessible package; Washable, reusable filter keeps long-term running simple; Easy install that most owners finish in under an hour
Cons: Open heat-shield design is more prone to heat soak than fully sealed boxes; Oiled cotton filter carries the usual re-oiling and MAF care requirements
6. Mopar Cold Air Intake Kit (77070045AC): Best OEM Fit
For owners who want a performance intake without stepping outside the Mopar family, the genuine Mopar cold air intake kit is the no-drama answer. Because it is engineered by the same people who built the car, fitment is perfect, it integrates with the factory harness and sensors without adapters, and it looks completely at home under the hood of a 392. The sealed airbox does a competent job of feeding cooler air, and you get a measured, factory-warranty-friendly upgrade over the restrictive stock unit.
The trade-off is exactly what you would expect from an OEM-tuned part. It is more conservative than the aggressive aftermarket boxes, so both the airflow gains and the sound increase are gentler. You are not buying this for the loudest roar or the biggest dyno number, you are buying it for guaranteed compatibility and OEM added security. For a 392 owner who values factory integration and a clean look over maximum drama, the Mopar kit is the sensible call.
- Designed by Mopar specifically for the 6.4L 392 HEMI for guaranteed fitment
- Sealed factory-style airbox that integrates cleanly with the stock harness
- Conical performance filter in an OEM-quality enclosure
Pros: Flawless plug-and-play fitment with zero guesswork; Sealed OEM-grade box keeps intake temps in check and looks factory clean; Backed by genuine Mopar quality and dealer support
Cons: More modest airflow gains than the aggressive aftermarket boxes; Conservative sound increase compared with open-style intakes
7. Volant Closed Box Cold Air Intake (16864): Best Heat Shielding
The Volant closed-box intake is built around one priority, keeping hot underhood air away from the filter. Its fully enclosed box seals the 6.4L’s filter off from radiant engine heat better than most, which translates to more stable intake air temperatures on hot days and during repeated pulls. You can spec it with Volant’s PowerCore dry media for low-maintenance, high-efficiency filtration or a traditional oiled cotton filter if you prefer maximum flow. The roto-molded tube is tough and purpose-built for the 392.
The downside is twofold. First, all that sealing makes it one of the more subdued intakes here, so if you want your HEMI to shout, this is not it. Second, the PowerCore-style filter is less common on parts shelves than a standard cone, so when it is time to clean or replace, you may need to order rather than grab one locally. For a 392 owner who prioritizes thermal performance and durability over noise, the Volant closed box is a strong, focused choice.
- Fully enclosed closed-box design that isolates the filter from engine heat
- Available with PowerCore dry media or a high-flow oiled cotton filter
- Cross-link roto-molded tube engineered for the 6.4L 392 application
Pros: Excellent heat isolation thanks to the fully sealed closed-box enclosure; PowerCore dry filter option offers strong filtration with easy upkeep; Rugged roto-molded construction holds up to underhood abuse
Cons: Quieter, more subdued sound than open intakes; Filter options and replacements can be harder to source locally
Frequently Asked Questions
Will a cold air intake actually add horsepower to my 392 Charger?
Yes, but set realistic expectations. A quality cold air intake on the 6.4L 392 typically frees up a modest but real gain over the restrictive stock airbox, usually in the single-digit to low double-digit horsepower range at the wheels, with the biggest improvement felt as sharper throttle response and stronger top-end pull. The 392 is naturally aspirated, so an intake alone will not transform the car, but paired with a tune and headers or a performance exhaust it becomes a meaningful part of a bigger power package. Just as importantly, you get a far better induction sound that lets the V8 actually be heard.
Do I need a tune after installing a cold air intake on the 392?
For most bolt-on cold air intakes designed for the 6.4L 392, a tune is not strictly required because the kits are engineered to work within the factory sensor and MAF range, so the car adapts on its own. That said, you will not unlock the intake’s full potential without one. A custom or canned tune optimizes the air-fuel ratio and timing for the extra airflow, which is where the noticeable power and drivability gains come from. If you plan to stack other modifications, do the tune. If you just want better sound and response from a bolt-on, the intake will run fine on its own.
Should I choose a dry filter or an oiled cotton-gauze filter for my Charger?
Both work well, and the right answer depends on your habits. Oiled cotton-gauze filters, like those on K&N and Spectre kits, generally flow a touch more air and are reusable for the life of the car, but they must be cleaned and re-oiled correctly or you risk leaving oil residue on the MAF sensor. Dry synthetic media filters, such as S&B Dry, aFe Pro DRY S and AIRAID SynthaMax, just wash out with no oiling step, so they sidestep MAF-fouling concerns entirely while still filtering very well. If you want maximum airflow and do not mind the maintenance ritual, go oiled. If you want simplicity and worry-free upkeep, go dry.
Does a cold air intake fit both the Scat Pack and the SRT 392?
In nearly all cases, yes. The Scat Pack and the SRT 392 share the same 6.4L HEMI engine and engine-bay layout, so any intake listed as compatible with the 392 or 6.4L application will fit both trims. What you must avoid is grabbing an intake built for the 5.7L HEMI or the 6.2L supercharged Hellcat, because those have different airboxes and throttle bodies and will not fit correctly. Always confirm the listing specifically calls out the 6.4L 392 by year and engine before buying, and double-check fitment notes for your exact model year since some kits split coverage across year ranges.
How hard is it to install a cold air intake on a 392 Charger myself?
For most owners it is a very approachable DIY job that needs only basic hand tools and usually takes between thirty minutes and a bit over an hour. The factory airbox unbolts and unclips, the new tube and box drop into the same general location reusing factory mounting points on most kits, and you reconnect the MAF sensor and any breather lines. Simpler open heat-shield designs like the Spectre go in fastest, while fully sealed dual-inlet boxes like the aFe Momentum GT take longer because of the extra parts and tighter routing. Take your time seating the couplers and clamps so there are no air leaks past the MAF, and you will be done in one easy session.
Our Verdict
For the 392 Charger, the K&N 63 Series AirCharger is our top pick because it blends strong, proven airflow gains with a fully enclosed airbox, a great HEMI growl and the long-term value of a reusable filter, making it the best all-around choice for the 6.4L. Our runner up is the S&B 75-5106, which we recommend to anyone who prioritizes top-tier filtration, a clear inspection lid and the option of a dry filter that completely avoids MAF worries. Choose the K&N for the best balance of power and sound, or the S&B for the cleanest air and most added security, and either way your 392 will breathe far better than it does from the factory.
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