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- USA
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- USA
- CAN
Ships within 48 hours · Estimated delivery Jul 10 - Jul 15
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Description
Hooker Aero Chamber Muffler 21504HKROverview The raw aluminized steel Aero Chamber is designed to do much more than simply muffle exhaust noise. The Aero Chamber Muffler produces a deep throaty powerful sound that will not change with time. The Hooker Aero Chamber uses a unique step principal, similar to that which is currently popular in racing header design. The aerodynamically designed chambers flow 23% better and produce more horsepower and torque than the most popular high
Overview
The raw aluminized steel Aero Chamber is designed to do much more than simply muffle exhaust noise. The Aero Chamber Muffler produces a deep throaty powerful sound that will not change with time. The Hooker Aero Chamber uses a unique step principal, similar to that which is currently popular in racing header design. The aerodynamically designed chambers flow 23% better and produce more horsepower and torque than the most popular high performance brand.
Features
- 4-3/4"H x 10-1/4"W x 14"L 16 Gauge Raw Aluminzed Steel Case
- Reinforced Inlets and Outlets
- Stainless Steel Perforated Internal Plate Eliminates Internal Rust
- Aerodynamic Lens Directs Sound Pressure Waves into Acceleration Chamber and Out of Muffler
- Sound Absorption Chamber eliminates High Frequeny Sound Waves for Deep Throaty Powerful Sound
- Resonance Chamber and Tuning Tube Cancels Unwanted Frequencies and Amplitudes (No annoying tin can sound or drone at cruising speed)
- Stepped acceleration Chamber Increases Exhaust Gas Velocity and Maximum Flow
- Three Internal Bulk Heads for Superior Case Durability and Stability
- Single 2-1/2" Offset Outlet
- Single 2-1/2" Offset Inlet
- Feature intricate stainless steel, robotic weld seams
Application
- Can be use as a Replacement of 1979-99 Mustangs. To use Cut Off Inlet/Outlet Pipes Flush with Stock Mufflers and Weld in Place. Stock Hangers Must be Welded to New Muffler.
Specs
| Automotive Item Grade | High Performance |
| Body Height (in) | 4.75 |
| Body Length (in) | 14 |
| Body Width (in) | 10.25 |
| Brand | Hooker |
| Color | Silver |
| Emission Code | 5 |
| Fitment | Universal |
| Inlet Connection Type | Pipe Connection |
| Inlet Diameter (in) | 2.5 |
| Inlet Position | Offset |
| Material | Aluminized Steel |
| Mounting Type | Uses Factory Hangers |
| Muffler Series | Aero Chamber |
| Muffler Type | Reflection |
| Outlet Connection Type | Pipe Connection |
| Outlet Diameter (in) | 2.5 |
| Outlet Position | Offset |
| Overall Length (in) | 17 |
| Product Type | Muffler |
| Shape | Oval |
| Sound Level | Aggressive |
| Warning | California Proposition 65 |
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.8 ★★★★★
Based on 2165 reviews
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Product Reviews
★★★★★ 5
A Lungful of Freedom
Size: 9.7" x 9.3" x 1.8"
Dateline: The Passenger-Side Footwell of a Toyota Venza, Sunday Night. We spend our lives in sealed metal boxes, hurtling through a thick, invisible soup of our own collective filth. A foul cocktail of exhaust fumes, road dust, tire particles, and whatever strange, pollen-based miasma the world decides to throw at us on any given day. To breathe that poison in, unfiltered, is an act of slow, unwitting suicide. You need a line of defense. A gatekeeper for your own lungs.
Enter the Bosch 6055C HEPA Cabin Air Filter. It is not a glamorous part. It is not a performance upgrade that adds horsepower or prestige. It is a simple, pleated rectangle of paper and charcoal, a humble guardian destined to live out its days in a dark plastic cave behind your glovebox. But its mission is a noble one.
The replacement process is a moment of pure, unadulterated, five-minute victory over the dealership's service department. You pop open the glovebox, you unclip the old filter tray, and you pull out the old soldier. And what you find is a horror show. A grey, matted testament to the unseen war it has been fighting on your behalf, choked with leaves, dirt, and the ghosts of a thousand diesel trucks. It is the face of the enemy.
You unwrap the new Bosch filter. It feels solid, well-made. The pleats are clean and numerous. I laid it side-by-side with the outgoing Denso filter—a brand that supplies the automakers themselves—and I could find no meaningful difference. The quality was equal. The construction, robust. This was no flimsy, cut-rate pretender. This was a serious piece of hardware from a serious company.
You slide the clean, white Bosch into the tray, snap it back into its dark little home, and close the glovebox. The deed is done. You have performed a life-saving transplant on your vehicle's respiratory system in less time than it takes to listen to a single pop song.
And the value… the value is the sweet, sweet punchline. For a fraction of what a dealership would charge you for the same simple service, you have installed a top-tier, HEPA-grade filter from one of the most respected names in the business. You have guaranteed yourself a clean, breathable bubble of personal space as you navigate the toxic jungle of the modern roadway.
This is not just a filter; it's a small, affordable act of rebellion. It’s a declaration that you, and you alone, are the master of the air you breathe. It is a simple, effective, and profoundly satisfying piece of gear. Highly recommended.
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Reviewed in the United States on June 9, 2025
★★★★★ 4
Great Upgrade to your Cabin Filter. Fits 2018 Subaru Outback
Size: 9.7" x 9.3" x 1.8"
This is a great filter upgrade to your cabin filter. This is better than the Subi standard part. Fits my Subaru outback. NOTE: Subi marks their filter with an 'up' arrow; however, this filter is marked with a 'airflow' direction. Direction of air flow is toward the blower motor so it will point downward when you install it.
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Reviewed in the United States on April 25, 2026
★★★★★ 5
Much cheaper than letting dealership do the job
Size: 9.7" x 9.3" x 1.8"
Filter fits well in works well
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Reviewed in the United States on May 8, 2026
★★★★★ 5
Not fit for 2023 Highlander
Size: 9.7" x 9.3" x 1.8", Size: 9.7" x 9.3" x 1.8"
Product quality is good, that's why I give 5 stars.
However it was not fit for my 2023 Toyota Highlander,, so returned.
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Reviewed in the United States on May 3, 2026
★★★★★ 5
Air flow direction
Size: 9.7" x 9.3" x 1.8"
Good product. Fits fine. This is not a Toyota part so Air Flow Arrows on filter should face down in a 2015 Toyota Rav4.
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Reviewed in the United States on March 27, 2026