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Heavy Duty Round Muffler 4" Inlet x 5" Outlet x 44 Lg - Replaces - M090781

Heavy Duty Round Muffler 4" Inlet x 5" Outlet x 44 Lg - Replaces - M090781

SKU: SKU:F247801E

Inventory: More than 50 in Stock

Shipping: Calculated at Checkout

Regular price $ 132.80 USD
Regular price Sale price $ 132.80 USD
Sale Sold out
Shipping calculated at checkout.

Shipping Policy

In order to send your purchase, our company may use different freight companies like USPS, UPS and some 3erd Carrier Services for Oversize orders, this will not affect the final price of your order. We will send you all the information in due time. 

For Free Shipping and Freight/Oversize Shipments they are some special term you may check at our Terms & Conditions page.

Return Policy

If for any reason you need to return a purchased item, we have a 30-day return policy, which means you have 30 days after receiving your item to request a return.

To be eligible for a return, your item must meet the conditions established in our Terms & Conditions.

To start a return, use our Contact Form

About this Item

  • Presents a high attenuation of the noise radiated by the exhaust gases of 15-20 dB (A)
  • Regulates back pressure for better fuel economy and efficient engine performance
  • Manufactured from heat and corrosion resistant materials to ensure durability in harsh conditions.
  • Round design and robust construction make them ideal for heavy-duty applications such as commercial vehicles and heavy machinery.
  • Replaces part number: M090781 for accurate installation
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Product Data Sheet


  • Brand: Fortpro
  • Vehicle Type: Semi-Trucks, Heavy-Duty Trucks
  • Product category: Exhaust Systems
  • Part Type: Heavy Duty Round Muffler
  • Part OEM: M090781
  • Inlet: 4"
  • Outlet: 5"
  • Body Length: 44"
  • Body Diameter: 9"
  • Overall Length: 51"
  • Attenuation Range Decibels: 15-20 dB(A)
  • Weight: 30 Lbs
  • Muffler Type: Style 1 - End Inlet / End Outlet / On Center
  • Material : Galvanised steel
  • Applications: Caterpillar 3406B, C-12, C15 / Cummins ISM, ISX 400, L10, M11, N14 / Detroit Diesel Series 60 350 to 400 Engines / International DT817, DT812B, DT817C / Mack E-9 ENDT865, ENDT866, E7 or E6 300 to 350, 400, 427 to 460.


  • Donaldson: M090781


Check Description & Specifications


Dimension Not Available.