2020-2026
2015-2019
2007-2014
2001-2006
FREE 1 to 3-Day Delivery on Orders $149+ Details
Find Mufflers for your Silverado 3500
Flowmaster Super HP-2 18-Inch Center/Center Oval Muffler; 2.25-Inch Inlet/2.25-Inch Outlet; 409 Stainless (Universal; Some Adaptation May Be Required)
Item SHS56731
Sale
On Sale
-8% $184.46 Was $199.95
Military, Medical & First Responders
$9.22 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_
- Body Height 4.00 In _x000D_
- Body Length 18.00 In _x000D_
- Body Material 409 Stainless Steel _x000D_
- Body Width 5.00 In _x000D_
- Brand Flowmaster _x000D_
- California Proposition 65 Yes _x000D_
- Category Exhaust _x000D_
- Clamps Included No _x000D_
- Emission Code 5 _x000D_
- Exhaust Tip Quantity 0 _x000D_
- Finish High-Temperature Paint _x000D_
- Fitment Universal; Some Adaptation May Be Required _x000D_
- Grade Type Performance _x000D_
- Hanger Included No _x000D_
- Heat Shield Attached No _x000D_
- Inlet Connection Slip-Fit _x000D_
- Inlet Diameter 2.25 In _x000D_
- Inlet Inside Diameter 2.25 In _x000D_
- Inlet Location Center _x000D_
- Inlet Outside Diameter 2.38 In _x000D_
- Inlet Quantity 1 _x000D_
- Inlet Type Clamp-On, Weld-On _x000D_
- Muffler Series HP-2 Series _x000D_
- Muffler Type Laminar Flow _x000D_
- Outlet Connection Slip-Fit _x000D_
- Outlet Inside Diameter 2.25 In _x000D_
- Outlet Location Center _x000D_
- Outlet Outside Diameter 2.38 In _x000D_
- Outlet Quantity 1 _x000D_
- Outlet Type Single _x000D_
- Overall Length 24.00 In _x000D_
- Part Type Exhaust Muffler _x000D_
- Product Type Street Mufflers _x000D_
- Reversible No _x000D_
- Shape Oval _x000D_
- Sound Level Moderate _x000D_
- Tunable No _x000D_
- Universal Or Specific Fit Universal _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 | 2.25 Inch |
| Muffler Installation Type | Clamp-On Muffler |
| Muffler Type | Chambered Muffler |
Description
Performance Muffler. The Flowmaster Super HP-2 18-Inch Center/Center Oval Muffler with 2.25-Inch Inlet and Outlet, constructed from durable 409 stainless steel, is engineered to deliver a balanced moderate sound while ensuring optimal exhaust flow. Designed for street use, it enhances performance for a variety of engine types, maintaining a classic muscle car exhaust tone with modern efficiency.
_x000D__x000D_Construction and Appearance. This muffler features laminar flow technology housed within a compact oval case design. It is finished with a high-temperature black paint that offers corrosion resistance and a sleek appearance to complement the exhaust system.
_x000D__x000D_Installation. This universal muffler requires some adaptation for installation and is designed for slip-fit clamp-on or weld-on connections. Minor modifications may be necessary to fit certain exhaust systems, but no specialized drilling is generally required.
_x000D__x000D_Warranty. It includes a lifetime limited warranty to ensure long-term reliability and customer support.
_x000D__x000D_Application. Suitable for universal applications, it fits 4 and 6 cylinder engines, classic and late model muscle cars, street rods, street/strip vehicles, and trucks/SUVs. Some adaptation may be required during installation.
Flowmaster 12418409
CA Residents: 
WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov
4.7
Reviews of Flowmaster Exhaust Products (500+)
Questions & Answers
No questions about this product yet.
Ask the First Question
