Installation Time
(approx) 2 Hours
Difficulty Level:
Light to Moderate mechanical skill required.
FREE 1 to 3-Day Delivery on Orders $149+ Details
Magnaflow Custom Builder Pipe Series Downpipe-Back Single Exhaust System; Side Exit (01-04 6.6L Duramax Silverado 3500 HD w/o Factory Installed Catalytic Converters)Find parts that fit my vehicle
Item SHS51990
Our Price
$565.00 kit
Military, Medical & First Responders
$28.25 Available in AT Cash Rewards.
Confirm Eligibility
Confirm Eligibility
CONFIRM THIS FITS YOUR VEHICLE!
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
- Weight-Optimized and Engineered to Enhance Diesel Truck Performance and Sound
- Durable Corrosion-Resistant Aluminized Steel Construction
- Includes 4 Inch Diameter Mandrel Bent Pipes
- Advanced CNC Precision Robotic Manufacturing
- Backed by 1-Year Limited Warranty
- Emissions-Legal Downpipe-Back Kit
- Clamp-On Inlet Connection for Easy Installation
- Produces Aggressive Exterior and Moderate Interior Sound Levels
- Single Passenger Side Rear Exit
- May Require Cutting, Welding, and Fabrication
- Flexible Installation Options with Included Components
- Attention-Grabbing Aggressive Style Design
- Customizable Layout, Placement, Orientation, and Exhaust Note
- Made in the USA
- Facilitates Do-It-Yourself Installation Using OEM Exhaust Break Locations
- Improves Exhaust Flow Dynamics Compared to Crush Bent Pipes
- Clamp-On Inlet Type with U-Bolt and Round Band Clamping
- Includes Clamps and Hangers but No Mufflers or Catalytic Converter
- Hardware Kit Includes Six Nuts
- Fits 01-04 6.6L Duramax Silverado 3500 HD Without Factory Installed Catalytic Converters
| Brand | Magnaflow |
| Exhaust System Type | Cat-Back System |
| Exhaust Tip Finish | No Tips |
| Exhaust Tubing Diameter | 4.00 Inch |
| Exhaust Material | Aluminized Steel |
| Exhaust Tip Outlet Style | No Tip |
| Exhaust Exit Location | Passenger Side - After Tire |
| Exhaust Loudness | Aggressive |
Description
Performance Exhaust Upgrade. The Magnaflow Custom Builder Pipe Series Downpipe-Back Single Exhaust System; Side Exit is designed to enhance your diesel truck's power and sound with a custom-engineered exhaust setup. It optimizes exhaust flow and delivers a deep, aggressive exterior sound while maintaining moderate noise levels inside the cabin, ideal for enhanced performance and auditory presence.
Construction and Appearance. Constructed from corrosion-resistant aluminized steel, this exhaust system features precision CNC robotic manufacturing for reliability and consistent fitment. Its aluminized finish balances longevity with an aggressive, polished exterior style suitable for performance enthusiasts.
Installation. Installation is clamp-on inlet style, but may require cutting, welding, and fabrication for a precise fit. Basic automotive skills are recommended, and professional installation is advised for best results.
Warranty. This product is backed by a 1-year limited warranty, reflecting manufacturer confidence in its quality and durability.
Application. Specifically engineered to fit 01-04 6.6L Duramax Silverado 3500 HD models without factory-installed catalytic converters, ensuring a direct and reliable fit for these vehicles.
Magnaflow 18980
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) Downpipe-Back Single Exhaust System
Tech Guides:
- Best Truck Exhaust Systems: The Complete Buyer's Guide
- Glossary What Are The Best Exhaust Systems? How Exhaust Systems Work
- Top 10 Favorite Exhaust Brands
- The Top 7 Aftermarket Exhaust Choices for Your Daily Driver
- The Best Truck Exhaust Systems for Serious Towing
- Magnaflow vs. Flowmaster: Which Exhaust System Sounds the Best
4.7
Reviews of Magnaflow Exhaust Products (500+)
Questions & Answers
No questions about this product yet.
Ask the First Question
Will It Fit My Silverado 3500
- 6.6L V8 Duramax - 01, 02, 03, 04
Designed for Extended and Crew Cab Models
