Product images and videos are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.
Exterior Components› Body Panels and Components
Flowmonster
FLOWMONSTER 409SS, MUFFLER 14X9X4X20
SKU: F00V 11386-FM
Easy — 1–2 hours
Overview
Constructed from 409 stainless steel, this muffler offers superior corrosion resistance and a natural finish. Its internal design is reversible, allowing for flexible installation. This absorption muffler is sold individually and is designed for universal fitment on vehicles with 4/6 cylinder engines, classic muscle cars, late model muscle cars, street rods, street/strip applications, and trucks/SUVs.
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Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.
Fitment
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Available on iOS & Android
Specifications
| Brand | Flowmonster |
| Part Number | F00V 11386-FM |
Videos
2005 Chevy Tahoe 5.3L TRUE DUAL EXHAUST w/ FLOWMONSTER EXHAUST!
FLOWMONSTER stainless muffler install on my 1968 Nova Super Sport!
Chevy Silverado 6.2L V8 w/FLOWMONSTER EXHAUST!
2005 Chevy Silverado 5.3L V8 w/ TRUE DUALS & FLOWMONSTER EXHAUST!
The GMC is getting Flowmonster exhaust at Burk's Exhaust & Fab
New 3" Flowmonster mufflers for Squeaky. #becauseracetruck
2018 Toyota Tundra 5.7L V8 TRUE DUAL EXHAUST w/ FLOWMONSTERS!
About MOTORMIA
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Returns & Fitment
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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Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.
Free shipping over $200 in the continental US. Alaska, Hawaii, U.S. territories (Puerto Rico, U.S. Virgin Islands, Guam, American Samoa, and the Northern Mariana Islands), and international orders carry surcharges — most appear at checkout. Some exceptions (LTL freight, or suppliers who quote freight only after we place the order) won’t. In those cases we’ll reach out with the exact charge before your order moves forward.
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