2019-2026
2014-2018
2007-2013
1999-2006
Installation Time
(approx) 1 Hour
Difficulty Level:
Light to Moderate mechanical skill required.
Installation Guides
No guide available for this part yet.
FREE 1 to 3-Day Delivery on Orders $149+ Details
Find Mufflers for your Silverado 1500
Flowmaster 40 Series Delta Flow Center/Dual Out Oval Muffler; 3-Inch Inlet/2.50-Inch Outlet (Universal; Some Adaptation May Be Required)
Item S211191
Just Reduced
On Sale
-10% $137.66 each Was $152.95
Military, Medical & First Responders
$6.88 Available in AT Cash Rewards.
Confirm Eligibility
Confirm Eligibility
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
Shop Owners Save More!
Sign up for our dealer program
Product Information
Features, Description, Q&A, Specs & Installation
Features & Specs
- _x000D_
- Two Chamber Design Incorporates Delta Flow Technology _x000D_
- Delta Deflectors Generate Increased Scavenging For Better Performance And Reduced Interior Sound _x000D_
- Milder Exterior Tone And Reduced Interior Resonance Over Standard 40 Series _x000D_
- Constructed Of 16 Gauge Aluminized Steel And Fully MIG Welded For Maximum Durability _x000D_
- No Internal Packing To Blowout _x000D_
- Excellent Street/Strip And Off Road Application _x000D_
- Race Proven Delta Flow Technology _x000D_
- Durable Fully Welded 16 Gauge Aluminized Steel _x000D_
- Body Height 4.00 In _x000D_
- Body Length 13.00 In _x000D_
- Body Width 9.75 In _x000D_
- Color Black _x000D_
- Emission Code 5 _x000D_
- Finish High-Temperature Paint _x000D_
- Fitment Universal; Some Adaptation May Be Required _x000D_
- Grade Type Performance _x000D_
- Inlet Connection Slip-Fit _x000D_
- Inlet Diameter 3.00 In _x000D_
- Inlet Inside Diameter 3.00 In _x000D_
- Inlet Location Center _x000D_
- Inlet Outside Diameter 3.13 In _x000D_
- Inlet Quantity 1 _x000D_
- Inlet Type Clamp-On, Weld-On _x000D_
- Mount Type Uses New Hangers Not Included _x000D_
- Muffler Series 40 Series Delta Flow _x000D_
- Muffler Type Chambered _x000D_
- Outlet Connection Slip-Fit _x000D_
- Outlet Inside Diameter 2.50 In _x000D_
- Outlet Location Dual _x000D_
- Outlet Outside Diameter 2.63 In _x000D_
- Outlet Quantity 2 _x000D_
- Outlet Type Dual _x000D_
- Overall Length 19.00 In _x000D_
- Part Type Exhaust Muffler _x000D_
- Product Type Street Mufflers _x000D_
- Reversible No _x000D_
- Shape Oval _x000D_
- Sound Level Aggressive _x000D_
- Tunable No _x000D_
- Vehicle Type 4/6 Cyl Engine, Classic Muscle Car, Late Model Muscle Car, Street Rod, Street/Strip, Truck/SUV _x000D_
| Brand | Flowmaster |
| Muffler Inlet Size | 3.00 Inch |
| Muffler Installation Type | Clamp-On Muffler |
| Muffler Type | Chambered Muffler |
Description
Performance Muffler. The Flowmaster 40 Series Delta Flow Center/Dual Out Oval Muffler; 3-Inch Inlet/2.50-Inch Outlet is designed to improve exhaust flow and provide an aggressive sound suitable for street and strip applications. It enhances engine scavenging and reduces interior resonance, making it an excellent choice for performance enthusiasts seeking a balance between sound and performance.
_x000D__x000D_Construction and Appearance. This muffler is constructed from durable 16 gauge aluminized steel and features a fully MIG welded body for strength and longevity. It is finished with high-temperature black paint to resist corrosion and maintain a clean appearance even under harsh conditions.
_x000D__x000D_Installation. Installation is straightforward with slip-fit clamp-on or weld-on inlet connection options. New hangers are required but not included; no drilling is typically necessary, although some adaptation may be needed depending on the vehicle.
_x000D__x000D_Application. Fits universal applications with some adaptation required, making it suitable for a variety of 4 and 6-cylinder engines, classic and late model muscle cars, street rods, street/strip, and truck/SUV configurations.
Flowmaster 9430402
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) Forty Series Delta Flow Muffler
4.7
Reviews of Flowmaster Exhaust Products (500+)
Questions & Answers
No questions about this product yet.
Ask the First Question
