Free Shipping On Orders Over $75. Details

Talk to a Sierra Enthusiast
1-888-706-1096
M-F 8:30A-11P, Sat-Sun 8:30A-9P
Win $5,000 For Your Sierra Enter daily!

Flowmaster 40 Series Delta Flow Offset/Offset Oval Muffler - 2.5 in. (Universal Fitment)

Item S503462
Call a Sierra Enthusiast at 1-888-706-1096
M-F 8:30A-11P, Sat-Sun 8:30A-9P
$0.00
Market Price $125.99 You Save 13% ($16.04)
Our Price

$109.95 (each)

FREE Shipping

In Stock Ships same business day.
Ship to: Ashburn - 20149
Sorry, please enter a valid US or CA postal code
We're sorry, zip can't be updated at this time.
Choose options to add to cart.
    Create a list
    Add to New List

    Saved - View your saved items

    We're sorry. We couldn't save this product at this time.

    Features & Details

    • Aggressive-Sounding Muffler with Mild Noise In-Cab
    • For Street, Strip, and Offroad Use
    • More Torque and Horsepower
    • Save Money with More Efficient Engine
    • 16-Gauge 409S Stainless Steel
    • MIG Welded for Durability
    • No Internal Packing
    • Color: Black
    • 2.5 in. Offset In; 2.5 in. Offset Out
    • Lifetime Limited Warranty
    • Simple to Install
    • Universal Fitment; Modifications Will Be Required

    On- or Off-road. Whether your Sierra goes on or off the pavement, it'll turn heads with a Flowmaster 40 Series Delta Flow 2.5 in. Offset/Offset Oval Muffler upgrade. Gain a deep, throaty sound, in addition to more power and performance potential. Featuring race-proven patented Delta Flow technology, this muffler with a 2.5 in. offset in and 2.5 in. offset out stands to improve torque and horsepower levels, not to mention boosting engine efficiency.

    Aggressive Exhaust Note. This Flowmaster 40 Series Exhaust Muffler delivers a more aggressive exterior sound that matches your truck's rugged appearance. All while interior sound is kept to a minimum, thanks to the special Delta deflectors. Rest assured that the sound won't get louder over time either, as there's no internal packing to blowout.

    409S Stainless Steel. Flowmaster proudly crafts this Black Oval Muffler in the USA from strong 16-gauge 409S stainless steel and fully MIG welds it to increase durability. The Delta Flow technology keeps interior resonance to a minimum and elevates performance, whether you're on the strip, street, or off-road.

    Modifications Required. This Muffler was designed to be used on mutliple applications, as it is not a direct fit replacement part. In order to install this Muffler properly on your vehicle, some modifications to the exhaust system will be required.

    Application. Flowmaster makes this 2.5 in. Offset In / 2.5 in. Offset Out Oval Muffler to fit 2007-2020 GMC Sierra 1500s.

    Fitment: 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 Details

    MPN# 842543

    CA Residents: WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov

    What's in the Box
    • (1) Muffler
    Installation Info

      Customer Photos

        Q & A

        No questions about this product yet.

        Ask the First Question

          Reviews