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  1. Exhaust Systems
  2. MagnaFlow
  3. Cat-Back Exhaust
  4. Gas
  5. Rear Exit - Single - Straight - Passenger Side
  6. 2-1/2 Inch Tubing Diameter
MagnaFlow Cat-Back Exhaust System - Stainless Steel - Gas

MagnaFlow Cat-Back Exhaust System - Stainless Steel - Gas

Retail:$1,889.92
Our Price: $1,280.72
You Save: $609.20
Exhaust Systems

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Shipping Weight: 44 lbs
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This cat-back exhaust system has technologically advanced, mandrel-bent tubing and 3 mufflers, which allow exhaust to flow freely, boosting horsepower and torque and thereby improving engine performance and durability. 1-800-940-8924 to order MagnaFlow exhaust systems part number MF16991 or order online at etrailer.com. Free expert support on all MagnaFlow products. Great prices and Fastest Shipping for MagnaFlow Cat-Back Exhaust System - Stainless Steel - Gas. Exhaust Systems reviews from real customers.
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  • Reviews (22)
  • Q & A (0)
  • Videos (1)
  • Photos

MagnaFlow Exhaust Systems

  • Cat-Back Exhaust
  • Gas
  • Rear Exit - Single - Straight - Passenger Side
  • 2-1/2 Inch Tubing Diameter
  • Stainless Steel
  • Single
  • 1 Tip
  • MagnaFlow

This cat-back exhaust system has technologically advanced, mandrel-bent tubing and 3 mufflers, which allow exhaust to flow freely, boosting horsepower and torque and thereby improving engine performance and durability.


Features:

  • Improves engine performance by increasing horsepower, torque and fuel efficiency
    • Mandrel-bent tubes allow for unrestricted airflow by maintaining the same diameter through every curve
      • Unrestricted airflow decreases back pressure ("exhaust turbulence")
    • Straight-through mufflers have stainless steel, perforated cores that run straight through, end to end
      • A layer of stainless steel wool insulates each perforated core to absorb noise, regulate high exhaust temperatures and prevent blowouts
      • No baffles, chambers or louvers that restrict airflow
    • Rear muffler further reduces noise without interrupting airflow
  • Boasts MagnaFlow's signature sound, which is deep and throaty on throttle but quiet inside your vehicle
  • Made of 100-percent stainless steel
  • Includes 1 polished tip, as well as clamps and hangers for installing onto the OEM exhaust system
  • Custom fit for your vehicle
  • Made in the USA


Specs:

  • Tubing diameter: 2-1/2"
  • Front muffler diameter (each): 5"
  • Rear muffler dimensions: 4" tall x 9" wide x 14" long
  • Tailpipe diameter: 2-1/2"
  • Number of tips included: 1
  • Exhaust system: single with dual front mufflers
  • Exit position: rear - passenger's side
  • Lifetime warranty


The cat-back system is the portion of the exhaust system from the outlet of the catalytic converter back to the tailpipe. MagnaFlow systems boast mandrel-bent tubes that allow for unrestricted airflow by maintaining the same diameter through every curve. This consistency in diameter decreases back pressure. Each MagnaFlow performance muffler has a stainless steel, perforated core that runs through it - end to end - with no baffles, chambers or louvers that restrict airflow. A layer of stainless steel wool insulates the perforated core to absorb noise, regulate high exhaust temperatures and prevent blowouts. Together, the mandrel-bent tubes and mufflers in this system increase horsepower, torque and fuel efficiency. MagnaFlow's signature sound is deep and throaty on throttle while remaining quiet inside your vehicle. All system components are made with 100-percent stainless steel. Clamps and hangers are included for installing onto the OEM exhaust system. MagnaFlow provides a lifetime warranty.



16991 MagnaFlow Catback System

Item # MF16991

Installation Details MF16991 Installation instructions

This Product Fits The Following Vehicles




Video of MagnaFlow Cat-Back Exhaust System - Stainless Steel - Gas

Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.




Video Transcript for MagnaFlow Cat-Back Exhaust System Installation - 2012 Jeep Grand Cherokee

Today, on our 2012 Jeep Grand Cherokee, we'll be installing the Magna Flow Cat Back Exhaust System, Part Number MF16991. To begin our install, we'll first need to remove the older manufacturer's exhaust. Starting here at the rear of the vehicle, we're going to spray the two rubber isolators, forward and back of the muffler. I'll also go ahead and spray the spring nuts that hold the rear section of the exhaust to the forward section of the exhaust at the exhaust flanges. By spraying the rubber isolators with some spray lubricant, it'll make it easier to remove. We're going to use a pry bar, pliers or, if you have an exhaust hanger removal tool. Starting at the back, we'll begin removing the rubber isolators, noting that on the rear hangers, there's also a metal ground strap.

We'll need to remove that from the hanger, also. With the rear two hangers removed, we'll need to remove the center two rubber hangers. To remove these two, it's easier to go ahead and remove the bracket from the body of the vehicle. We'll go ahead and remove the two fasteners that secure each bracket and then we'll remove the forward hardware. Here there are a total of four fasteners. There are nuts with springs built on to them, for the spring nuts. Then, we go ahead and carefully lower the exhaust and remove it out from underneath the vehicle.

After we go ahead and set the old exhaust aside, we'll need to remove the center two hangers that we left on to the exhaust earlier. We'll just go ahead and use our exhaust hanger removal tool to pry the rubberized slater 00:01:42 off of the metal hanger. We'll then go ahead and re-install these hangers back on to the vehicle with the fasteners we removed earlier. Now, we're ready to install the new Magna Flow Exhaust System. They'll be a total of four sections installed. Starting at the front and working our way back.

We'll use the new bolts that will go through the Magna Flow Exhaust flange, then through the manufacturer's flange and secure it with a spring nut. We'll install both sides finger tight, leaving all our hardware loose until we have it in place. Now, we'll go ahead and repeat the same process on the other side. Next, we'll take two exhaust clamps and slide it on to the two forward pieces we just installed. These two exhaust clamps will secure the center section to the forward two pieces. Next, we'll go ahead and install the center section feeding it over the forward mufflers.

Once we have them in place, we're then ready to install the rear muffler. To install the rear muffler, we'll feed the metal hangers into the rubber isolators and then the neck of the muffler over the exhaust pipe. Now, with everything in place, we're ready to go ahead and tighten it down. As we tighten everything down, we'll make sure we have ample clearance in between the exhaust and the body. Now, with everything tightened down, we're ready to hit the road. That does it for the install of the Magna Flow Cat Back Exhaust System, Part Number Mf16991, on our 2012 Jeep Grand Jerokee. .


Customer Reviews

MagnaFlow Cat-Back Exhaust System - Stainless Steel - Gas - MF16991

Average Customer Rating:  4.5 out of 5 stars   (22 Customer Reviews)

This cat-back exhaust system has technologically advanced, mandrel-bent tubing and 3 mufflers, which allow exhaust to flow freely, boosting horsepower and torque and thereby improving engine performance and durability.

by:

Installation was easy, perfect fit, sounds great and engine roars! Thanks etrailer for the great customer service and MagnaFlow for a great product!



by:

Have to say that I was a bit skeptical at first, as I don't know anyone that has installed this particular kit. After installation, I am pleased to report that it has exceeded my high expectations. Kit came complete with everything needed to install (less the flange bolts). Initial sound was excellent...not too loud that it bothers the kids while they're sleeping in the car, but deep and loud enough to turn some heads. Excellent experience dealing with Etrailer as well. Will not hesitate to do business with them in the future. Thanks again for the super fast shipping and excellent customer service!



by:

My Magnaflow cat back exhaust system on my 2016 VW GTI gave me more of the sound I wanted for my little sports car, and it looks so much better than the stock exhaust system. Meaning: the stock muffler, which shows horizontally at the rear of the vehicle, looks like an afterthought, just a metal can. The muffler on the Magnaflow is hidden in a pocket near the center of the undercarriage, so it doesn't show at all. What is visible at the rear are the dual stainless steel pipes. In addition, the exhaust tips on the Magnaflow are larger in diameter to accommodate the larger diameter pipes, and therefore look more aggressive. I am very satisfied with the setup.



by:

The exhaust system fit perfectly, sounds great, and looks stylish. The exhaust tone is not overly loud, yet sounds much more powerful than the stock system did.



by:

Hardest part of installation was getting the truck high enough off the ground to get the factory exhaust over the axle. The new system was relatively easy and fit perfect. The spare tire does not fit underneath with this kit installed. I put a Tire Buddy in the bed to hold the full sized spare. The heavy duty factory receiver hitch is not in the way. System has a mellow purr that should be street legal everywhere yet is semi-aggressive. No blatting or popping. Chrome tips seem to always get black with soot and need to be cleaned often. This is a premium system and should last the life of your truck. It is well supported and doesn't vibrate. I highly recommend it. If Chevy had this as an option they would sell lots more trucks.



by:

Bought the magnaflow exhaust for my 2015 GMC. Everyone says how great it sounds. Price was good and easy to install.



by:

Very good performance and sounds installed myself in driveway in under 45 minutes. service was great from e-trailer.



by:

I am well pleased with the system itself. This was actually a replacement under the warranty, and the previous system lasted seven years, here in the rust belt. Only complaint was the necessity of returning to manufacturer for inspection prior to receiving replacement. That meant my truck was down for about a month.



by:

Great customer care and service from Chris and the Etrailer employee's. Got back to me to let me know of a item was back ordered from a manufacturer, didn't try to over sell me on products, asked what I'd like to do. Helped me make changes to my purchase that I needed right away. Two days later they now have my business shopping loyalty from here on out. I can't thank you guys enough.



by:

nice and growly sounding, helpful tip spay some wd 40 on ends before fitting together, helps to slide the parts together easier.



by:

Product nice. Fit could be better for trans am. Tail pipes don't show. Had to make extensions. Works ok now



by:

I believe it is the best exhaust on the market for this application. only thing is the exhaust tip needs bent down more as it touches the body and will melt plastic.



by:

Nice addition, not too loud and yet good rumble. Easy installation and would recommend it.



by:

Not a great fit on my 2009This kit sounds and looks great, but the three bolt cat flange didnt fit my truck, it required machining to spread the holes further apart, just a heads up my honda ridgeline was built in june of 2009 and the install took 5 hrs because of this issue, however when finished it sounds and looks great.



by:

Not a direct FitSounds good but had to modify rear brackets and drill holes in the frame to install on 09 F150 crew cab..not impressed with fitment or installation time..modification time caused loss of profit..



by:

The MagnaFlow exhaust looks and sounds awesome. Not only that but the stainless steel construction and lifetime warranty gives me peace of mind.



by:

Excellent exhaust note through out the entire RPM range! Highly recommended this cat back system.



by:

Easy install, perfect fit on my 07 Tacoma. After computer reset, several miles, truck runs Awsome. Great seat of pants torque increase, combined with my Injen cold are intake truck is way quick and has much throatier note.



by:



by:

Looks and sounds great, not at all loud but a nice rumble that I can enjoy.



by:

Easy to install sounds great I love the product it looks good too I'll try to get pictures up later



by:

I am so disappointed with this product ..i spend almost a grand and the sound of the exhaust is not good at all... I wish i can return this ...


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See what our Experts say about this MagnaFlow Exhaust Systems

  • Cat-Back Exhaust System Recommendation for a 2012 Jeep Grand Cherokee 3.6 Liter
    We have a Magnaflow cat-back system that would work great on your 2012 Jeep Grand Cherokee. You would want the part # MF16991 which is a confirmed fit for your Jeep. We even had the chance to install this kit on a similar Grand Cherokee as yours. See install video for more info on that. This isn't a dual exit system though. But your vehicle would only have one cutout for exhaust at the rear fascia so a dual exit system wouldn't really look right on your vehicle.
    view full answer...

Info for this part was:

Employee Sue W
Video Edited:
Sue W

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