Exhaust› Mufflers and Resonators
Flowmaster
40 Series Chambered Muffler 40 Series 2.50 Offset In 2.50 Center Out Aggressive Sound Flowmaster
SKU: F00L 42541
Easy — 1–2 hours
Description
Fitment
Fitment Guaranteed
Don’t gamble
on fit.
Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.
Available on iOS & Android
Specifications
| Brand | Flowmaster |
| Part Number | F00L 42541 |
Videos
The ONLY Flowmaster Video you NEED to watch
Flowmaster Exhaust On Chevy 5.3 Install
Flowmaster 40 Series Exhaust Install - 98 Chevy Silverado 1500
Flowmaster Super 40 Series Muffler Sound Test
Flowmaster 40 Series Delta Flow Mufflers Review - SEMA 2013
Flowmaster Flow FX VS Flowmaster 40 Series Muffler Face-off
"Project Midnight" Silverado 2500HD 6.0 Flowmaster Super 40 Muffler Install
I Installed A Flowmaster 40 Series Muffler On My Ford F150! | Sounds AMAZING! | NO WELDING NEEDED! |
How to Select the Right Flowmaster Muffler - Series Differences Explained
$99 Flowmaster 40 series vs. $22 Totalflow Amazon copy clone knockoff. My thoughts
How to Spot a Counterfeit Flowmaster Muffler
Buy with Confidence
Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.
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