The 5 Best MagnaFlow Mufflers for F150 – Reviews 2023

best magnaflow muffler f150

Photo by Truck Hardware / CC BY

The right MagnaFlow muffler for your F150 can increase fuel efficiency and depending on the one you choose, give your truck a great new sound too. The right muffler will also let your engine “breathe” better (how fast the exhaust gases flow through your exhaust system), and allowing your engine to breathe better helps the engine to develop more horsepower.

There’s a lot to take into consideration when looking for the MagnaFlow muffler for an F150. Here we look at some of the most highly reviewed mufflers available for your truck.

Here are our recommendations for the 5 best MagnaFlow mufflers for F150 trucks on the market:

MagnaFlow 11225 Exhaust Muffler

If you’re looking for one of the best mufflers for F150 trucks, you should consider the MagnaFlow 11225. This is a single-core stainless steel muffler. The core is perforated with an offset flow from front to back. MagnaFlow uses acoustic fibers and stainless-steel mess to keep the hot exhaust gasses flowing through the core.

This design also creates a deep smooth tone while allowing for maximum exhaust gas flow. This is a universal fit muffler with a 2 1/4-inch inlet and a 2 1/4-inch outlet. The entire unit is stainless steel to ensure a long lifespan.

2011 Mustang V6 with Magnaflow # 11225 Mufflers and Custom Exhaust Tip

MagnaFlow 11226 Exhaust Muffler

The 11226 MagnaFlow muffler is an oval shape with a center inlet connection and an offset outlet. Both inlet and outlet are lap welded for extra strength and measure 2 1/2 inches. It offers superior flow and performance in comparison to the stock unit.

As with all MagnaFlow mufflers, the 12256 is made from stainless steel with a satin finish. You may find it a bit louder than your stock muffler. But rather than just sounding noisy, what you get is a bold but pleasant sound that lets you know your truck is breathing better.

Magnaflow 11226 muffler on fj cruiser

MagnaFlow 11229 Exhaust Muffler

The MagnaFlow 11229 Exhaust muffler is like all MagnaFlow mufflers made from stainless steel with a satin finish. All weld joints are lap welding for extra strength and durability. All Magnaflow mufflers are universal fit and carry a lifetime warranty.

This is an offset flow-through unit with a 3-inch inlet and outlet. The inner core is surrounded by stainless-steel mesh and packed with acoustic fibers to protect the shell and regulate noise. This model offers a deep tone that makes your truck sound tough while the flow-through design ensures maximum airflow for better performance and efficiency.

Magnaflow Muffler 11229 + Magnaflow Tip 35116

MagnaFlow 12198 Exhaust Muffler

The MagnaFlow 12198 muffler measures 20 inches from tip to tip with a 14-inch stainless steel body. With a 3-inch inlet at a pair of 2 1/2-inch outlets, you get maximum flow thanks to the single perforated core that runs from inlet to the outlets.

The core is protected by a stainless-steel mesh and protected by proprietary acoustic fibers. It offers a smooth deep tone that’s not much louder than stock but delivers far better performance. This muffler also carries a lifetime warranty to ensure complete satisfaction, which this, like the others, the best MagnaFlow mufflers for F150 trucks.

2009 Dodge Ram Exhaust Hemi Magnaflow 14" 12198

MagnaFlow 12773 Exhaust Muffler

If you’re in the market for a muffler with close to stock sound, the MagnaFlow 12773 is just what you’re looking for. As with all MagnaFlow mufflers, this one is made from 100% stainless-steel and comes with a lifetime warranty. It offers a straight-through design for maximum flow and performance.

With no interior baffles, you can expect to see gains in horsepower and low-end torque. This model features a massive 4-inch inlet and outlet, making it the perfect choice for those with a Powerstroke diesel under the hood.

2012 F150 EB 4" Heartthrob Exhaust with Magnaflow Muffler(12773)

How to Get the Best MagnaFlow Muffler for an F150

The stock exhaust system on your truck is designed to meet all emissions standards and requirements while at the same time keep exhaust noise down. If you replace the muffler with an aftermarket unit, you are likely to see an increase in fuel efficiency, low-end torque, and overall performance. But how do you know which MagnaFlow muffler to buy? There are several things you should consider before making your purchase.


Even though you are buying a universal fit muffler rather than going back to the dealer for a stock muffler, the one you buy must still fit. This means inlet and outlet sizes need to fit the exhaust pipe. It also means that there is sufficient room for the length of your new muffler to fit. You can modify the length of the incoming or outgoing pipes by cutting, but if there isn’t enough clearance under your vehicle for the body of the muffler, you may have a problem.


All vehicle’s exhaust is loud due to the pulsing of exhaust gasses as they leave the engine and move towards the muffler. The muffler’s job is to “muffle” the noise and turn it into something tolerable. Think about how drag car engines sound with straight pipes. Hurts your ears, doesn’t it?

But did you know that a straight flow-through muffler is louder than an offset model? The size of the body and how the core is designed to play a major role in the sound level. So too does the type of packing and the material used.

Bigger Is Not Always Better

There is a common misconception that bigger is better when it comes to buying an aftermarket muffler. It simply isn’t true.

According to the experts at MagnaFlow, if you install a muffler that is too big for your vehicle, it allows the exhaust gasses to expand. This lets them cool down on their way through the core. Instead of improving performance, the interaction between the faster moving (hot) gasses and the slow-moving (cooled down) gasses causes turbulence. This results in poor performance.

When you choose a muffler with the right dimensions, however, it doesn’t give the exhaust gasses time to cool down as they pass through the muffler. This helps to minimize the amount of turbulence while maintaining proper exhaust gas velocity. The right velocity helps improve performance even though you might be tempted to think the muffler seems to be too small.

Towards Better Performance

There is less to buying a new muffler for your truck than you might think. But if you want more performance, the only way to get the best muffler for an F150, or any other vehicle, is to do your homework and spend time online researching your options. MagnaFlow is one of the top-rated performance exhaust system and muffler manufacturers.

Take your time, measure the space you have to work with and the size of the incoming and outgoing pipes. This gives you a good starting point. Then you need to think about the sound you’re looking for. While the sound may not be important to you, it might be to your neighbors.

This is probably one of the most important steps as the last thing you want is to weld your new muffler in place only to find out you can’t live with the sound. If you’re not sure, you can find a number of videos on YouTube demonstrating the sound of most aftermarket mufflers, and then all you need to do is pick one of the best MagnaFlow mufflers above for your F150 truck. Good luck!

  • Founder of Mechanical Caveman, Beau is an unrepentant tool enthusiast and, sporting deadlift-callused hands and an incongruous beer belly, all-around macho guy. When he doesn’t know re tools, he consults with his handyman and car-repairman buds to give you well-reasoned and cutting-edge info.

Share the Post and Images

Leave a Reply

Your email address will not be published. Required fields are marked *