Exhaust› Mufflers and Resonators
Flowmaster
40 Series Delta Force Race Muffler 40 Series Race Muffler 409SS 3.50 Offset In 3.50 Center Out -Aggressive Sound Flowmaster
SKU: F00L 8435419
Moderate — 2–4 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 8435419 |
Videos
The ONLY Flowmaster Video you NEED to watch
3" Flowmaster 40's vs Delta Flow 50's - Big Block Chevelle
Flowmaster Super 40 Series Muffler Sound Test
FlowMaster 40s vs 40 Series Delta Flows on a Fox Body Mustang
How to Select the Right Flowmaster Muffler - Series Differences Explained
Installing A Super Loud Muffler On a Silverado. FlowMaster 10 series muffler before & after.
Flowmaster Muffler Comparison : Muffler Shootout 2
Flowmaster VS Borla VS Magnaflow Explained
Flowmaster Vs Magnaflow Explained
Tech Tip: How to Install Flowmaster Exhaust System Band Clamps
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.
View Full Return Policy