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  • M085421 Donaldson Muffler- Style 1

    • M085421 Donaldson Muffler- Style 1

    Donaldson Exhaust

    $278.71
    (4 reviews) Write a Review
    SKU:
    M085421
    UPC:
    742330132166
    Shipping:
    Calculated at Checkout
    INLET SIZE:
    4"
    OUTLET SIZE:
    4"
    BODY DIAMETER:
    8.5"
    BODY LENGTH:
    34.37"
    INLET:
    END
    OUTLET:
    END
    BODY SHAPE:
    ROUND
    STYLE:
    1
    Adding to cart… category.add_cart_announcement

    Product Description

    M085421 Donaldson M085421-016-147 MUFFLER, Round, STYLE 1

    Exhaust Mufflers Product Attributes
    Inlet Diameter:  4.00 Inches (101.60 MM)
    Outlet Diameter:  4.02 Inches (102.11 MM)
    Body Diameter:  8.50 Inches (215.90 MM)
    Body Length:  34.37 Inches (873.00 MM)
    Overall Length:  40.00 Inches (1016.00 MM)
    Rated Flow LR:  1212 CFM (34.2996 CMM)
    Rated Flow MR:  1714 CFM (48.5062 CMM)
    Rated Flow HR:  2099 CFM (59.4017 CMM)
    Back Press LR:  1 In Hg (25.40 MM Hg)
    Back Press MR:  2 In Hg (50.80 MM Hg)
    Back Press HR:  3 In Hg (76.20 MM Hg)
    Attenuation:  12-18 dBA
    Primary Application:  FORD/NAVISTAR 7.3L
    Primary Application:  POWER STROKE, GM/ISUZU 6.6L

     

     

    Other Details

    Manufacturer's Waranty

    Product Videos

    Custom Field

    INLET SIZE 4"
    OUTLET SIZE 4"
    BODY DIAMETER 8.5"
    BODY LENGTH 34.37"
    INLET END
    OUTLET END
    BODY SHAPE ROUND
    STYLE 1

    Product Reviews

    Write a Review

    4 Reviews Hide Reviews Show Reviews

    • 5
      Awesome muffler

      Posted by Willy on Feb 5th 2022

      Sounds great super quiet Great for Towing

    • 5
      donaldson mo85421

      Posted by gary brown on May 29th 2021

      quieted truck down alot quieter than mbrp muffler

    • 5
      Quality and sound

      Posted by Jake Bulach on May 6th 2021

      I installed this 40" muffler on my 2015 Duramax after running deleted for 80,000 miles. The drone and cab noise at cetain RPMs were annoying for long drives. This muffler brought cab noise levels down just above factory, a nice tone. I could hold a convo easily before in the cab but now I can hear my child almost breathing while sleeping in his seat. I debated on the 51" muffler, It will not fit in a crew cab short 6.5' bed. It would be a tight fit in a crew cab long bed truck.

    • 5
      M085421

      Posted by Caije Nichols on Feb 19th 2021

      I have bought two of these mufflers and there GREAT!! One on a "13 F-350 6.7 diesel the other is on a "13 F-550 6.7 diesel. Both have good rubble to them without being obnoxiously load. Highly HIGHLY recommend this muffler for daily driver trucks.

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