My Account
My Garage
Shopping Cart

Shopping Cart

0 items in your Cart
View Cart
Subtotal
Track
My Order
MY GARAGE Select Vehicle
MY GARAGE

Flowmaster 8042543 Series Chambered Muffler Aggressive Sound - 40 409 Stainless Steel

(Ford F-150 1997-2008, Mustang 2005-10, Expedition 1997-2002, F-150 Heritage 2004; Chevrolet Camaro 2010-13, Malibu 1978-83, C1500 1988-93 + 31 more models)

Part of: Flowmaster Series Chambered Muffler Aggressive Sound

Other options in this family: Flowmaster 42441 Flowmaster 430402 Flowmaster 42541 Flowmaster 42543 Flowmaster 43043

Manufacturer

Picture for manufacturer Flowmaster

Part Number

8042543
5 reviews
Sale Price

$135.95

In Stock (5)

delivery box

Usually delivered within 2 days

free shipping

FREE SHIPPING

Check out with

ApplePay
Authorize Seller Badge
No Hassle Returns

No Hassle Returns

Live-in-stock inventory

Live-in-stock inventory

Fitment guaranteed

Fitment guaranteed

Product Details

The Flowmaster 40 Series Chambered Muffler delivers an aggressive exhaust tone that's perfect for enthusiasts seeking a bold, performance-oriented sound. Engineered with Flowmaster's original two-chamber design, this muffler produces a deep, moderate to aggressive exterior exhaust note while maintaining noticeable interior resonance that lets you know your vehicle means business.

Key Features:

  • Aggressive exterior exhaust tone with noticeable interior sound
  • Original two-chamber design for maximum performance
  • Constructed from fully welded 16-gauge 409 stainless steel for exceptional durability
  • Ideal for street, strip, and off-road applications
  • Moderate interior resonance provides authentic muscle car sound
  • No internal packing to break down or blow out
  • Lifetime Limited Warranty

The 40 Series is Flowmaster's most popular muffler line, offering the perfect balance between performance and sound. The chambered design creates a deep, rich tone without sacrificing flow, making it an excellent choice for trucks, SUVs, muscle cars, and performance vehicles. Built to last with corrosion-resistant stainless steel construction, this muffler delivers consistent performance in all driving conditions.

Products specifications

Fits

Ford F-150 1997-2008, Mustang 2005-10, Expedition 1997-2002, F-150 Heritage 2004; Chevrolet Camaro 2010-13, Malibu 1978-83, C1500 1988-93, Chevelle 1964-72, Blazer 1973-74, K1500 1988-93, C10 1975-80, El Camino 1978-87 + 26 more models

Body Height

4.00

Body Length

13.00

Body Material

409 Stainless Steel

Body Width

9.50

Brand

Flowmaster

Prop 65

Yes

California Proposition 65 Chemical Name

Chromium (hexavalent compounds)

California Proposition 65 Chemical Name

Nickel (Metallic)

Category

Exhaust

Clamping Type

Flat Band

Clamps Included

No

Color

Black

Emission Code

5

Exhaust Tip Quantity

0

Exhaust Tip Quantity

Sold Separately

Finish

High-Temperature Paint

Fitment

Universal

Grade Type

Performance

Hanger Included

No

Heat Shield Attached

No

Inlet Connection

Slip-Fit

Inlet Diameter

2.50

Inlet Inside Diameter

2.50

Inlet Location

Offset

Inlet Outside Diameter

2.63

Inlet Quantity

1

Inlet Type

Weld-On

Inlet Type

Clamp-On

Mount Type

Uses New Hangers (Not Included)

Muffler Series

Original 40 Series

Muffler Type

Chambered

Outlet Connection

Slip-Fit

Outlet Location

Offset

Outlet Outside Diameter

2.63

Outlet Quantity

1

Outlet Type

Single

Overall Length

19.00

Part Type

Exhaust Muffler

Product Type

Street Mufflers

Reversible

No

Shape

Oval

Sound Level

Aggressive

Sub Category

Mufflers

Tunable

No

Universal Or Specific Fit

Universal

Vehicle Type

Street Rod

Vehicle Type

Late Model Muscle Car

Vehicle Type

Street/Strip

Vehicle Type

Truck/SUV

Vehicle Type

Classic Muscle Car

Warning

California Proposition 65

Fast service and shipping, Plus the lowest price for the high performance k&n air filter<br>I wanted.

very fast processing received product within a few days. fair prices. will do business with again.

Excellent Website to Shop From and Excellent Email and Shipping imformation received promptly and prices are the best on the internet. Will definitely shop again and refer to my friends.

I was hesitant to order from Autoplicity due to the perception that the price was too good to be real (and not some scam). However, I read a few reviews on the internet and decided to take a chance. Once I placed my order I was sent a tracking number and received my car parts within 2 weeks. I was happy that I got the parts I ordered and the price was really low. Simple and quick.

Completely amazed by this seller. I recieved the rack in just 2 days and the price was unbeatable. I'm just stoked to have finally found a bike rack worth having!!

Share icon
Return Policy
Returns are easy at THMotorsports

Not happy with a purchase? No problem. We've made returning items as easy as possible. And most purchases can be returned for free for 30 days. Learn more about our Returns Policy