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Ships within 48 hours · Estimated delivery Aug 1 - Aug 6
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Description
Hooker Aero Chamber Muffler , 3.5" Centre - Centre # 21507HKRHooker Aero Chamber Muffler , 3. 5" Centre Centre # 21507HKR Muffler, Aero Chamber, 3 1 2 in. Inlet 3 1 2 in. Outlet, Steel, Aluminized, Each Improve your exhaust flow by 23 percent with Hooker Aero Chamber mufflers. These mufflers are designed to do much more than simply muffle exhaust noise; they produce a deep throaty rumble that will not change ever! Plus, Aero's aerodynamically designed chambers flow better to deliver more horsepower and torque
Hooker Aero Chamber Muffler , 3.5" Centre - Centre # 21507HKRMuffler, Aero Chamber, 3 1/2 in. Inlet/3 1/2 in. Outlet, Steel, Aluminized, Each
Improve your exhaust flow by 23 percent with Hooker Aero Chamber mufflers. These mufflers are designed to do much more than simply muffle exhaust noise; they produce a deep throaty rumble that will not change--ever! Plus, Aero's aerodynamically designed chambers flow better to deliver more horsepower and torque thanks to Hooker's unique step principle. The stepped acceleration chamber increases exhaust gas velocity for maximum flow. An aerodynamic lens directs sound pressure into and out of the muffler while resonance chambers and sound absorption chambers create the sound. And, to keep Aero Chamber mufflers from rusting from the inside out--a stainless steel perforated plate to eliminate internal rust. Muffler cases are available in 16-gauge aluminized steel or stainless steel but it's truly what's inside that makes it so sophisticated. Need a muffler? Go with Hooker Aero Chamber mufflers--the real master of flow!
Case Shape:Oval
Inlet Diameter (in):3.500 in.
Inlet Quantity:One
Inlet Location:Center
Outlet Diameter (in):3.500 in.
Outlet Quantity:One
Outlet Location:Center
Internal Construction:Chambered
Muffler Material:Steel
Muffler Finish:Aluminized
Case Length (in):14.000 in.
Overall Length (in):18.000 in.
Thickness (in):4.750 in.
Width (in):10.250 in.
Outlet Style:Standard, without tip
Quantity:Sold individually.
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
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- Standard Shipping : 3-10 business days
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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
4.4 ★★★★★
Based on 12 reviews
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Product Reviews
★★★★★ 3
Try a different pillow
Size: Upgrade Queen (2 Pack)
Even with all the memory foam in it, it's still flat. No firmness to it. I hoped it would expand and settle in the few weeks I've had the pillows, but nothing works (dryer, fluffing, etc)
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Reviewed in the United States on June 4, 2026
★★★★★ 5
This is a must have!
Size: Upgrade Queen (2 Pack)
One of my favorite purchases! I love that you can take stuffing out as needed. My husband kept majority of his in because he likes a full pillow. I prefer a flatter, soft pillow so I took out probably half of the stuffing. We both love them!
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Reviewed in the United States on May 30, 2026
★★★★★ 5
Excellent pillow.
Size: Upgrade Queen (2 Pack)
Wow these pillows are fantastic!!! First off they are good quality and sized as described. I'm forced to sleep on my back since I use a cpap every night. They suggest taking some filling out for "back sleepers". But in my case, I am disabled, overweight, and the way I position myself on a pillow is probably unique. I have a little of my shoulders, head and neck on the pillow. I didn't have to remove any filling. It was pretty good at first and after about a few day/nights, everything settled in just perfectly. It's truly one the finest pillows I've owned to date. (Part of my disability is a very painful neck & muscle malady, my head leans far to the right. Basically feels like a crick in your neck that never goes away. It's called tortacollis or dystonia depending who you talk to.) Because of this, I have truly spent hundreds and hundreds of dollars on different types and styles of pillows. A very select few have worked out fairly well over time until I found this one. As I said in the beginning, this is an excellent pillow and a great value as well. Hopefully this will work as well or even better for others. I purchased a 2 pack this time, 1 for home and the other for our RV. Definitely buying. another 2 pack to keep for future replacements. Pillows simply don't last forever. They get funky in time. No matter how clean you try to stay with bedding and personal hygiene, it just happens eventually. Sweet dreams. :~)
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Reviewed in the United States on June 23, 2025
★★★★★ 1
👎🏽 a
Size: Upgrade Queen (2 Pack)
Incredibly thick and firm pillows. Not great for stomach or side sleepers. They alway end up on the floor cause we find them uncomfortable. Don’t recommend, practically unusable
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Reviewed in the United States on November 5, 2025
★★★★★ 5
Comfortable and stays cool
Color: White-cooling Basic, Size: Queen(Pack of 1)
Great pillow. When i opened it, i noticed a strange smell, i assumed its the smell of whatever they use to make the pillow stay cool. You have to fluff it for a good amount of time to make sure the cooling agent spreads well in the foam. Is what i assumed atleast. Its a perfect amount of softness for me. Pair it with some bamboo pillow cases and you got a good night of sleep
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Reviewed in the United States on May 9, 2026
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