2019-2025
2014-2018
2007-2013
1999-2006
Installation Time
(approx) 2 Hours
Difficulty Level:
Light to Moderate mechanical skill required.
FREE 1 to 3-Day Delivery on Orders $119+ Details
Talk to a Sierra 1500 Sales Tech
1-888-706-1096
M-F 8:30A-11P, Sat-Sun 8:30A-9P
Get $80 Off
Redeem Now >
Find Mufflers for your Sierra 1500
Flowmaster 50 Series Delta Flow Offset/Offset Oval Muffler; 2.25-Inch Inlet/2.25-Inch Outlet (Universal; Some Adaptation May Be Required)Find parts that fit my vehicle
Item S503467
Sierra 1500 Sales Techs:
Connect Now
M-F 8:30A-11P, Sat-Sun 8:30A-9P
$0.00
7 Reviews
Our Price
$175.95 each
Choose options to add to cart.
Saved - View your saved items
We're sorry. We couldn't save this product at this time.
or use
Product Information
Features, Description, Reviews, Q&A, Specs & Installation
Features & Specs
- Top-Notch 50 Series Muffler
- Offers a Moderate Noise
- Minimal Interior Resonance
- Enhances Horsepower and Torque
- Ensures Fuel Efficiency Gains
- Unique 3 Chamber Design
- Made with Data Flow Technology
- 16 Gauge 409S Stainless Steel
- Muffler is Fully MIG Welded
- Designed and Built in the USA
- Hassle-Free Installation Limited
- Lifetime Warranty
- Universal Fitment; Modifications Will Be Required
| Brand | Flowmaster |
| Muffler Inlet Size | 2.25 Inch |
Description
Quieter Drive. If you're looking to maintain your 1999-2025 GMC Sierra 1500's aggressive exterior exhaust noise while minimizing its interior sound, install Flowmaster's 2.25 in. 50 Series Delta Flow Offset/Offset Oval Muffler. This muffler boasts a unique 3 chamber design that reduces interior resonance so that you can sound aggressive to other drivers without compromising the comfort and quiet of your ride.
Performance Gains. Along with the improvements in your truck's sound, this muffler also enhances your truck's horsepower and torque, giving it that extra boost you need on the street and on the trails. With a massive improvement in fuel efficiency as well, this muffler ensures you win on the road and at the pump.
MIG-Welded. Constructed from 16-gauge 409S stainless steel, this muffler is guaranteed to be high-strength so that you can focus on the road ahead rather than worrying about its durability on tough trails. Designed and built in America for top-notch quality, the muffler is also MIG-welded for enhanced durability.
Warranty. Backed by a limited lifetime warranty, this muffler is guaranteed to sport top-notch materials and superior craftsmanship. If you have any concerns, check out the warranty for details and limitations.
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's 2.25 in. 50 Series Delta Flow Offset/Offset Oval Muffler is built for all 1999-2025 GMC Sierra 1500s.
Shop All Truck Parts And Accessories
Shop All Truck Exhaust
Shop All Truck Mufflers
Flowmaster 842453
CA Residents: 
WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov
Installation & What's in the Box
Installation Info
What's in the Box
- (1) Muffler
5.0
Customer Reviews (7)
Reviews of Flowmaster Exhaust products have an average rating of 4.7 out of 5
Questions & Answers
No questions about this product yet.
Ask the First Question
