Description
Muffler - 3 in Offset Inlet - 3 in Offset Outlet - 14 x 9 x 4 in Oval Body - 20 in Long - Stainless - Natural - Universal - Each
Straight Through
The MagnaFlow 4 x 9in. Oval Straight-Through Performance Exhaust Muffler 11239 is engineered to enhance your ride with a healthy helping of our signature exhaust sound and dyno-proven performance thanks to its free-flowing straight-through perforated stainless steel core wrapped in stainless steel mesh and acoustic fiber fill. The reversible, universal 3/3in. diameter inlet/outlet Straight-Through layout allows you to install it in whatever orientation and configuration you see fit. However, professional installation is highly recommended. Muffler 11239s weight-optimized 4x9x14in. oval-shaped body features a satin finish that elevates the overall aesthetics of your current exhaust setup. 11239 is made of durable, corrosion resistant stainless steel and produced using cutting-edge CNC precision robotic manufacturing techniques, all backed by MagnaFlow's limited lifetime construction warranty.
Additional Information
Magnaflow Straight-Through Performance Muffler; 3in. Offset/Offset; 4x14x9 Body
Data: v2 - Desc: v4.2 - Upd: 2026-11-08 05:11:53
Features
- 100 Percent Stainless Steel
- 100% Stainless Steel
- Delivers a Smooth, Deep Tone
- Delivers A Smooth/Deep Tone
- Mufflers are Bi-Directional
Images are supplied by the manufacturer and may be generic. While all efforts are made to provide accurate pictures, there may be differences in the actual product, such as colour, quantity, version, or included components. Please carefully review the description and specifications for details on inclusions or any variations. Some items may be sold individually or in sets, and images may occasionally depict additional products or quantities not included in your purchase. For assistance or clarification, please contact customer support.
Specifications
Product Details
| Body Height: | 4 |
| Body Length: | 14.000 in. |
| Body Material: | Stainless Steel |
| Body Width: | 9 |
| Core Diameter: | 3 |
| Description: | Straight-Through Performance Muffler; 3in. Offset/Offset; 4x14x9 Body |
| Exhaust Tip Quantity: | 0 |
| Finish: | Satin |
| Hanger Included: | No |
| Inlet Inside Diameter: | 3.000 in. |
| Inlet Outside Diameter: | 3.000 in. |
| Inlet Position: | Offset |
| Inlet Quantity: | 1 |
| Inlet Type: | Offset |
| Material: | Stainless Steel |
| Muffler Type: | Straight-Through |
| Outlet Inside Diameter: | 3 |
| Outlet Quantity: | 1 |
| Outlet Type: | Offset |
| Overall Length: | 20.000 in. |
| Part Number: | mag11239 |
| Reversible: | Yes |
| Series: | Straight-Through |
| Shape: | Oval |
| Tip Quantity: | 0 |
| Title: | MagnaFlow 4 x 9in. Oval Straight-Through Performance Exhaust Muffler 11239 |
Reference Information
| Reference Data (Provide these details to our support team) | |
|---|---|
| Brand Name/s | Magnaflow, MagnaFlow Exhaust Products, MAGNAFLOW PERF EXHAUST, Magnaflow Performance |
| StreetFX SKU | mag11239 |
| SFX Item ID | 4289162 |
| Accounting SKU | mag-11239 |
| Manufacturer SKU | 11239 |
| Manufacturer UPC | 888563181196 |
| Alternative References | 11239, MFL11239, MPE-11239 |
Straight-Through Performance Muffler; 3in. Offset/Offset; 4x14x9 Body
MagnaFlow performance mufflers are designed to provide your vehicle with more power and excellent sound. These exhaust units are available in several styles, and most feature a large-diameter, perforated stainless steel core with a straight-through design—for unrestricted flow and sound control. All contact points are lap-jointed and welded to avoid distortion or cracking at the seams. The mufflers are available in a variety of inlet/outlet diameters, inlet quantities, shapes, and finishes. Order the model that best suits your vehicle application.
| Product Attributes | |
|---|---|
| Brand | MagnaFlow |
| Manufacturer's Part Number | 11239 |
| Part Type | Mufflers |
| Product Line | MagnaFlow Performance Mufflers |
| UPC | 888563181196 |
| Muffler Material | 304 stainless steel |
| Inlet Diameter (in.) | 3.00 in. |
| Outlet Diameter (in.) | 3.00 in. |
| Inlet Quantity | 1 |
| Outlet Quantity | 1 |
| Inlet Location | Offset |
| Outlet Location | Offset |
| Case Shape | Oval |
| Reversible | Yes |
| Internal Construction | Straight-through core |
| Muffler Finish | Natural |
| Case Exterior Length (in.) | 14.00 in. |
| Overall Length (in.) | 18.00 in. |
| Thickness (in.) | 4.000 in. |
| Width (in.) | 9.000 in. |
| Remanufactured | No |
| Quantity | Sold individually. |
| Manufacturer Attributes | |
|---|---|
| Exhaust Tip Quantity | 0 |
| Inlet Quantity | 1 |
| Outlet Quantity | 1 |
| Body Length | 14 |
| Overall Length | 18 |
| Inlet Inside Diameter | 3 |
| Outlet Inside Diameter | 3 |
| Core Diameter | 3 |
| Body Height | 4 |
| Body Width | 9 |
| Hanger Included | No |
| Inlet Type | Offset |
| Outlet Type | Offset |
| Shape | Oval |
| Finish | Satin |
| Body Material | Stainless Steel |
| Muffler Type | Straight-Through |
| Reversible | Yes |
| Series | Straight-Through |
| Title | MagnaFlow 4 x 9in. Oval Straight-Through Performance Exhaust Muffler 11239 |
| Manufacturer Designation | Straight-Through Performance Muffler; 3in. Offset/Offset; 4x14x9 Body |
| Product Class | Exhaust Muffler |
| Construction/Type | Magnaflow Straight-Through Performance Muffler; 3in. Offset/Offset; 4x14x9 Body |
| Product Outline | Delivers a Smooth, Deep Tone Mufflers are Bi-Directional 100% Stainless Steel |
| Vehicle Brief | Exhaust Muffler |
| Market Description | The MagnaFlow 4 x 9in. Oval Straight-Through Performance Exhaust Muffler 11239 is engineered to enhance your ride with a healthy helping of our signature exhaust sound and dyno-proven performance thanks to its free-flowing straight-through perforated stainless steel core wrapped in stainless steel mesh and acoustic fiber fill. The reversible, universal 3/3in. diameter inlet/outlet Straight-Through layout allows you to install it in whatever orientation and configuration you see fit. However, professional installation is highly recommended. Muffler 11239s weight-optimized 4x9x14in. oval-shaped body features a satin finish that elevates the overall aesthetics of your current exhaust setup. 11239 is made of durable, corrosion resistant stainless steel and produced using cutting-edge CNC precision robotic manufacturing techniques, all backed by MagnaFlow's limited lifetime construction warranty. |
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