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 42442 40 Series Chambered Muffler - Aluminized Steel

Part of: Flowmaster 40 Series Chambered Muffler

Other options in this family: Flowmaster 42443

Manufacturer

Picture for manufacturer Flowmaster

Part Number

42442
14 reviews
Sale Price

$101.95

In Stock (10+)

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 is an aggressive-sounding performance exhaust muffler designed for enthusiasts who want a deep, powerful tone without sacrificing durability. This muffler features Flowmaster's original two-chamber design that delivers the classic Flowmaster sound—a moderate exterior and aggressive interior tone that's perfect for street, strip, and off-road applications.

Key Features:

  • Original 40 Series two-chamber design for aggressive exhaust note
  • No internal packing materials that can deteriorate or blow out over time
  • Fully welded 16-gauge aluminized steel construction for maximum durability
  • Delta Flow technology for improved exhaust scavenging and performance
  • Versatile application for street performance, racing, and off-road use
  • Direct fit replacement for easy installation

The Flowmaster 40 Series has been the benchmark for performance mufflers for decades, offering proven reliability and that unmistakable Flowmaster tone. The chambered design uses precisely tuned chambers to cancel specific sound frequencies while maintaining maximum flow for horsepower gains.

Products specifications

Body Height

4.00

Body Length

13.00

Body Material

Aluminized steel

Body Width

9.50

Brand

Flowmaster

Prop 65

No

Category

Exhaust

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

2.25

Inlet Inside Diameter

2.25

Inlet Location

Center

Inlet Outside Diameter

2.38

Inlet Quantity

1

Inlet Type

Weld-On

Inlet Type

Clamp-On

Muffler Series

Original 40 Series

Muffler Type

Chambered

Outlet Connection

Slip-Fit

Outlet Inside Diameter

2.25

Outlet Location

Offset

Outlet Outside Diameter

2.38

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

Truck/SUV

Vehicle Type

Classic Muscle Car

Vehicle Type

Street/Strip

Vehicle Type

Late Model Muscle Car

Vehicle Type

Street Rod

So far so good.

Great quick, and convenient

Shipping was 5.00 on a 1.99 part but considering ebay was asking 18.00 for it I'm very happy

Great price. Better than Amazon!

easy site to use.

n/a

Great

easy site to navagate. found all the parts i needed

I am a very happy camper! Great price and the convenience of using Amazon!

I was skeptical about Autoplicity since I hadn't heard of them before, and that their price was 12% lower than anyplace else I could find. Plus, I couldn't even find a store around here that carried the X-jack. Plus I got it delivered right This my door fast. You people are Excellent!

Just received my wheel lock. It is exactly as described and came very quickly. Autoplicity has the cheapest price and great service.

good price. like the discount shipping.

- Updated review -<br>Autoplicity.com contacted me after my original review and admitted to making a mistake with my order. They have refunded my shipping and I am happy now.<br><br>- Original review -<br>After 18 days the part finally arrived. The filter appears to have been sent directly from K&N, but I ordered on the 20th of June, yet the packing date that K&N Engineering Inc. shows is July 3rd.

Smooth and easy

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