MagnaFlow Race Muffler - 5" x 8" Oval - 3" Inlet/Outlet
14149
The MagnaFlow 14149 Race Muffler delivers high-flow exhaust performance and an aggressive exhaust tone in a compact 5" x 8" oval body. Featuring a 3" inlet, 3" outlet, and straight-through perforated core, this stainless steel performance muffler is designed to minimize exhaust restriction while providing sound control for high-horsepower engines. Its compact 12" overall length makes it an excellent choice for rock crawlers, rock bouncers, race cars, and custom exhaust systems where packaging space is limited.
Constructed entirely from stainless steel with fully welded seams, the MagnaFlow 14149 is built for durability in demanding off-road and racing environments. The bi-directional design allows the muffler to be installed in either direction, providing flexibility when routing exhaust around chassis tubing, suspension components, and drivetrain assemblies. Ideal for LS and LT engine swaps, performance trucks, and custom race vehicles, this universal muffler combines unrestricted exhaust flow with a durable, serviceable exhaust configuration.
Includes:
- (1) MagnaFlow 14149 Race Muffler – 5" x 8" Oval, 3" Inlet / 3" Outlet
Important: Universal-fit muffler requiring custom exhaust installation. Exhaust tubing, hangers, clamps, and mounting hardware are not included.
Specifications
| Manufacturer | MagnaFlow |
|---|---|
| Part Number | 14149 |
| Product Type | Universal Performance Race Muffler |
| Muffler Series | Race Series |
| Body Shape | Oval |
| Body Height | 5" |
| Body Width | 8" |
| Body Length | 6" |
| Overall Length | 12" |
| Inlet Diameter | 3" |
| Outlet Diameter | 3" |
| Inlet Quantity | 1 |
| Outlet Quantity | 1 |
| Internal Design | Straight-Through Perforated Core |
| Flow Direction | Bi-Directional / Reversible |
| Body Material | Stainless Steel |
| End Cap Material | Stainless Steel |
| Core Material | Stainless Steel |
| Construction | Fully Welded |
| Weld Material | Stainless Steel |
| Exhaust Sound | Aggressive Performance Tone |
| Hangers Included | No |
| Installation Type | Universal / Custom Exhaust Fabrication |
| Manufacturer Warranty | Limited Lifetime / Terms Apply |
| Primary Application | High-Performance Exhaust Systems, LS/LT Engine Swaps, Off-Road Racing & Custom Fabrication |
| Quantity | (1) Muffler |
Fitment
Universal performance muffler designed for custom exhaust systems using compatible 3" exhaust tubing.
Common Applications:
- GM LS & LT Engine Swap Exhaust Systems
- Rock Crawlers & Rock Bouncers
- Ultra4 & Off-Road Race Vehicles
- Custom Tube-Chassis Buggies
- Performance Trucks & SUVs
- Drag Racing & Track Cars
- Hot Rods & Custom Street Vehicles
- Custom Single or Dual Exhaust Systems
Fitment & Installation Notes:
- Universal application; not a direct bolt-on vehicle-specific muffler.
- Designed for exhaust systems using compatible 3" inlet and outlet connections.
- Bi-directional construction allows installation in either flow direction.
- Compact 5" x 8" oval body with 6" body length and 12" overall length.
- Custom exhaust tubing, welding, or appropriate exhaust connections may be required.
- Exhaust hangers and mounting hardware are not included.
- Verify clearance around chassis tubing, suspension components, driveshafts, fuel lines, and body panels.
- Provide adequate exhaust support and heat protection during installation.
- Confirm applicable exhaust sound and emissions regulations for street-driven vehicles.
Builder Note: Exhaust packaging is especially important in custom tube-chassis buggies and LS-powered off-road builds. The compact MagnaFlow 14149 provides a straight-through exhaust path without requiring a large muffler body. Mock up the muffler with the suspension, driveshaft, and chassis components in place before final welding, and leave sufficient clearance for heat expansion and service access.
FAQ
What are the dimensions of the MagnaFlow 14149 Race Muffler?
The MagnaFlow 14149 features a 5" x 8" oval body measuring 6" long, with a 12" overall length. Both the inlet and outlet measure 3" in diameter.
Is the MagnaFlow 14149 a straight-through muffler?
Yes. The muffler uses a straight-through perforated stainless steel core designed to maintain efficient exhaust flow while reducing sound levels compared with an unrestricted exhaust system.
Can this MagnaFlow muffler be installed in either direction?
Yes. The MagnaFlow 14149 features a bi-directional design, allowing installation in either direction for greater flexibility in custom exhaust fabrication.
Will this muffler work with LS and LT engine swaps?
Yes. The universal 3" inlet and outlet configuration makes it suitable for compatible LS and LT engine exhaust systems. Verify exhaust tubing diameter, available mounting space, and the engine's airflow requirements before installation.
How loud is the MagnaFlow 14149 Race Muffler?
The Race Series design produces an aggressive performance exhaust tone while providing sound reduction through its straight-through core. Actual sound levels depend on engine displacement, exhaust configuration, catalytic converters, and additional resonators.
Is the MagnaFlow 14149 made from stainless steel?
Yes. The muffler features stainless steel body construction, end caps, and a perforated internal core with fully welded seams for durability and corrosion resistance.
Does this muffler require welding?
Custom exhaust installation is required. Welding or compatible exhaust connections may be used depending on the system design. Exhaust tubing, hangers, and installation hardware are sold separately.
Can this muffler be used on a rock crawler or race buggy?
Yes. Its compact oval body and high-flow design make it well suited for custom off-road exhaust systems where chassis clearance, heat management, and available mounting space are important.
Does the MagnaFlow 14149 include mounting hangers?
No. The muffler is sold individually without hangers or mounting hardware. Suitable exhaust supports must be fabricated or purchased separately.
What warranty does MagnaFlow provide?
The supplied product information identifies a lifetime manufacturer warranty. Coverage is subject to MagnaFlow's applicable warranty terms, exclusions, and intended product use.
