









🔥 Own the street with sound that speaks louder than words!
The Flowmaster 40 Series Original Chambered Muffler (3.00” Center In / 2.50” Dual Out) is a high-performance exhaust upgrade crafted from durable 16-gauge aluminized steel. Featuring a classic two-chamber design, it delivers the signature aggressive Flowmaster sound while enhancing horsepower, torque, and throttle response. Designed for universal fitment on muscle cars, street rods, trucks, SUVs, and custom builds, it offers a bold auditory presence and proven durability for enthusiasts who demand both style and substance.












| ASIN | B000182DO2 |
| Automotive Fit Type | Universal Fit |
| Best Sellers Rank | #25,443 in Automotive ( See Top 100 in Automotive ) #2 in Automotive Performance Exhaust Mufflers #259 in Automotive Emission & Exhaust Products |
| Brand | Flowmaster |
| Configuration | Center/Dual |
| Customer Reviews | 4.8 4.8 out of 5 stars (1,118) |
| Date First Available | September 1, 2004 |
| Exterior | Painted |
| Global Trade Identification Number | 00700042010448, 00700042029464 |
| Is Discontinued By Manufacturer | No |
| Item Weight | 10.49 pounds |
| Item dimensions L x W x H | 20.4 x 4.6 x 9.9 inches |
| Item model number | 430402 |
| Manufacturer | Flowmaster |
| Manufacturer Part Number | 430402 |
| Model | 430402 |
| OEM Part Number | 430402 |
| Product Dimensions | 20.4 x 4.6 x 9.9 inches |
| Shape | Oval |
| UPC | 700042010448 700042029464 |
| Vehicle Service Type | Car |
R**1
Great product
Excellent product from a exceptional company, sounds amazing
C**�
Sounds good great tone
Exactly what I was looking for
J**E
Deep sound and very low priced.
This muffler was cheap. It had a nice painted black finish and a deep sound. When I installed it though it made the port for outgoing exhaust on the wrong side, not closest to the frame. But overall satisfied.
S**G
Classic Muscle Sound
Awesome sound on BBC.
A**3
Just right.
Like new in the box, i was worried do to it being a return, however, it was just what I needed. Thank you Amazon and seller.
J**N
Sounds Mean
Wow, let me tell you about the Flowmaster 43043 40 Series Chambered Muffler - it's an absolute game-changer for anyone looking to take their ride to the next level! From the moment you start up your engine, you can feel the power and performance that this muffler brings to the table. It's like music to my ears every time I rev my engine with this bad boy installed. The deep, throaty growl is enough to send shivers down your spine and will have heads turning wherever you go. Not only does it sound amazing, but the performance gains are out of this world. The Flowmaster 43043 40 Series Chambered Muffler delivers a noticeable boost in horsepower and torque, giving your vehicle that extra oomph it needs to really stand out on the road. It's super easy to install, so you can have it on your car and be ready to hit the streets in no time. Trust me, once you experience the power and performance of the Flowmaster 43043 40 Series Chambered Muffler, you'll wonder how you ever drove without it. This muffler is a must-have for any car enthusiast looking to take their ride to the next level
J**N
👍🏼
Sounds great
S**A
On time
They were fine received them as they said
D**R
Awesome fit even better sound, nice low growl but not annoying at highway speeds. Flowmaster nailed it with this one !!!
T**R
Installed on my wife’s 2017 ram 1500, has the same offset as the stock muffler which made install very simple. I went to local muffler shop and got 24” of 3” exhaust tube with one end flared (trimmed off a few inches when i knew the exact measurement during install) and 3 exhaust clamps. Id recommend soaking the stock muffler inlet and outlet with WD 40 to loosen up the dirt and rust then just lay under the truck and boot the stock muffler, on inlet end, until it pops out (remember to remove exhaust hanger rubbers before hand or it with just keep bouncing on hangers). It sounds pretty good, not too loud.
カ**ン
適宜連絡が来て、配送状況がわかるのでよかった。 若干日数の差異はあるが、こちらとしては、気にならなかった。
F**B
Heavy duty construction, well made, sound good
G**Y
Easy install on a 19 ram hemi and sounds incredible.
Trustpilot
3 days ago
1 week ago