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  1. #1

    Default Flowmaster 44 part number?

    Ive searched a million threads and cant really determine what muffler I would need to replace the stock one. Im not really sure what size inlet and outlet, is it a center in and out or offset will work? Any help would be greatly appreciated! Thanks in advance guys.
    2010 Taupe Gray Silverado
    Many extras to come

  2. #2
    Jr. Engineer hundojoe's Avatar
    Join Date
    Feb 2010
    Elk River, Minnesota


    I thinks this is what your looking for, its taken directly from the Flowmaster web site. Hope this helps, Good Luck.
    Flowmaster part # 9430452
    Super 44 3.00" IN(C) /2.50" OUT(D)
    Super 44 Muffler 3.00" IN (C) / Dual 2.50" OUT 4" x 9.75" x 13" Case
    1999 Silverado Regular Cab Short Box
    Black on Black, Line-X sprayed in bed liner
    5.3 with K&N CAI, Texas Speed 220/220 cam with 112 deg LSA
    Texas Speed computer Tune
    American Racing Headers with Cats
    4.11 gears front and back, with Eaton rear posi
    Flowmaster 40series true duals
    16X8 American Racing Nitros with 305/70/16 Goodyear MTR's
    285's in the pic

    If it ain't broke...........Give me a minute!

    Im not completely useless, I can be used as a bad example...

  3. #3
    Sr. Apprentice
    Join Date
    Sep 2010
    Black River Falls, Wisconsin, United States


    If its the same one i put on my 2004 your going to have a hell of a time routing that thing past the shock one of the tail pipes runs right into it and the the rear axle mounts hit also. its do able but u need to force it to work...

  4. #4


    As I recall, the Flowmaster 44 is a "toned down" version of the 40 series. You can still get the 40 series mufflers on ebay for $50 or so.

  5. #5


    Thanks for the responce but Im looking for a single in single out to replace the stock muffler but adding a new flowmaster and a longer peice of pipe. Anyone know what to buy before I go ordering stuff I dont need?

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