If you are here then chances are you are looking into buying a new catalytic converter. We realize that this isn’t exactly a small investment.

Back in high school, all we had to do was a study about these things but as it turns out, having to buy is an entirely different matter altogether.

Naturally, this is not something that you buy every day so you want to make it count and get the best catalytic converter to suits your needs.

Don’t worry; we’ve got your back. Keep reading to find out how to go about this process.

Best Catalytic Converter In 2021

Now as we mentioned before, we understand where you’re coming from and it never hurts to get a second or third opinion before investing in a big-ticket item such as this. However, it doesn’t have to be as complicated as you might think.

For this purpose, it is best if we start with the basics. That is, you can first go through a rough outline or overview of potential catalytic converters that might suit you.

Once you have that down, we can get into the more complex details and come up with a good end product. So let’s get started!

Comparison Table of Best Catalytic Converter

Our Top 10 Picks For the Best Catalytic Converter

Now to get into the details of these products, we have put together more in-depth reviews that contain product descriptions, pros, and cons as well as our final verdicts on these catalytic converters.

So feel free to browse and compare these until you decide on the suit that appeals to your senses.

1.      Catalytic Converter For 2007-2013 Nissan Altima

If you are looking for a catalytic converter that will remain in good working condition for the long run then the Catalytic Converter for 2007-2013 Nissan Altima is your best bet.

Although it is implied that it is only compatible with a certain type of vehicle, you can always check to see whether it can be fitted to your own vehicle as well.

Given the quality standards of this catalytic converter, it is recommended that you prioritize it before the others on this list.

The body of the catalytic converter is made of pure stainless steel from top to bottom. This ensures that the outer shell is strong and durable to protect the inner structure from getting damaged or exposed.

Moving on to the internal metals, there is an array of precious metals on the inside of the scaffolding that is designed to provide optimal efficiency.

The structural aspect is also enhanced such that there are no complaints i.e. no warnings on your Malfunction Indicator Lamp so you can rest assured.

The model of the converter itself has been designed to make installation as easy as possible for users. All you have to do is bolt the converter directly to your vehicle’s exhaust system without any additional modifications and you’re good to go.

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Bottom Line
All in all, this catalytic converter is perfect even for beginner users because it is fairly easy to install and is durable which definitely an added bonus for something that you typically don’t have to buy everyday!

2.      MagnaFlow 99356HM Universal Catalytic Converter

The MagnaFlow 99356HM Universal Catalytic Converter is a no-fuss converter that has become very popular among users in recent time.

You might have even heard the name MagnaFlow tossed around in any conversation related to catalytic converter. With a complete stainless steel finish, the outer body is protected and durable for the long run.

The design of the converter itself has been approved by Federal emissions laws so it is fairly certified. The MagnaFlow has been designed specifically to cater to gas-based or diesel-based vehicles which is limiting, but it makes up for it in other ways.

The model itself is quite simple, with a seam of the converter welded quite tightly and close to the body in order to form a durable bond that will hold through thick and thin.

The diameter of the inlet is about 2.5 inches. In addition, the converter has been manufactured in the United States which itself is quite a testament to its quality.

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Bottom Line
Apart from the limitations, the MagnaFlow makes for a pretty good catalytic converter that you can count on for the long haul.

It does come with a universal fit design which is compatible with almost all sorts of vehicles so you should be safe.

3.      Walker 15036 EPA Certified Standard Universal Catalytic Converter

Who says only clothes or jewelry can be vintage? Let us introduce you to this vintage catalytic converter, which is the Walker 15036EPA Certified Standard Universal Catalytic Converter.

Now the reason we are calling this vintage is because it has been designed specifically for ‘Pre-OBDII’ cars. These are mainly cars that have been manufactured either in 1995 or before that.

If you can seem to get rid of your old car then it is recommended that you fit it with a suitable catalytic converter in order to prevent any unwanted emissions lest your car should be in breach of any state emission laws.

The body of the converter is stainless steel with a pipe that has been aluminized for strength and durability. It has a universal fit design that is great for compatibility, especially in older cars. You might require some extra tools or equipment for installation.

You can consult your local mechanic regarding the exact process or just get it professionally installed. Moreover, it contains heat shields in order to protect from exposure related to extreme temperatures.

The bushings of the converter are expandable for installation; however, custom installation may be required depending on your vehicle.

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Bottom Line
Although this catalytic converter has been designed for older cars, it is perfect for old-timers who do not want to get rid of their prized or vintage vehicles.

Also, even in older vehicles, it does do a pretty job of regulating emissions which requires a lot of work so don’t sleep on this one yet!

4.      Eastern 70318 Catalytic Converter

In case you are looking for a simple, no-frills catalytic converter that gets the job done then the Eastern 70318 Catalytic Converter is the one for you. It has a pretty standard fit design and stainless steel outer body similar to every other converter on this list.

The outlet or outer diameter of the pipe on either side of the converter body is about 2.5 inches in length.

This one does fall a bit short because it does not have a built-in Oxygen sensor. In addition, there is no visible space where an Oxygen sensor can be installed.

The size or compatibility isn’t specified therefore it is recommended that you consult with your mechanic before investing in this converter. It is a universal fit design therefore installation might come at a cost as well.

You might be able to do it yourself but with the size being ambiguous, this might be confusing. You can get a fair idea regarding whether it will fit by looking up the dimensions of the converter given in the comparison table above.

Compare that to the space next to your exhaust system and it should clear things up but do get a second opinion before you go for it.

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Bottom Line
When it comes to the Easter 70318 Catalytic Converter, there is not much to go by because several details are ambiguous.

That is not to say that it is not a good product, but we would recommend getting a second opinion.

Read Also: Best Catalytic Converter Cleaner Review

5.      EvanFischer REPG960301 Silver Powder Coated Catalytic Converter

The EvanFischer REPG960301 Silver Powder Coated Catalytic Converter definitely does not play around when it comes to performance.

For starters, it is a very different design from most of the other converters on this list. It does have a standard stainless steel finish with separately placed inlet and outlet pipes.

The inlet pipe has dual functioning three bolt spinners and three bolt flanges that are of course welded. On the other hand, the outlet pipe which contains a single two bolt welded flange. In addition, it comes with four different Oxygen sensor ports to keep a steady flow going.

Now coming back to the design, the converter is in a Y-shaped pipe form, albeit a bit curvier. It can be assembled with ease and can be installed just as easily considering that it is a direct fit model.

The converter has been assembled while keeping in mind EPA certified catalysts in order to form a durable structure that will perform well in the long term.

The catalytic converters includes a set of hardware as well containing basic tools such as gaskets, nuts, and bolts that are necessary for assembling and installing it.

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Bottom Line
This particular catalytic converter is quite different from several others on this list owing to the difference in design as well as the direct fit model.

All in all, the converter pays for itself owing to the long term durability and performance.

6.      Flowmaster 2230130 223 Series 3” Inlet/Outlet Universal Catalytic Converter

The Flowmaster 2230130 223 Series 3” Inlet/Outlet Universal Catalytic Converter is a fairly standard model with a stainless steel outer body and a pipe going through either end of the main body.

The manufacturing is such that it guarantees that you will not have any instances of the Malfunction Indicator Light turning on at any stage of use. It also claims to be compatible with a wide array of applications and vehicles.

It is fairly lightweight owing to its compact design. It is a universal fit model which can be good or bad depending on how you look at it. For starters, you will have to get it welded in order to get it installed which may require extra manpower, tools, as well as hardware.

The Flowmaster, unfortunately, does not come with a hardware kit so you will have to invest in that separately.

The dimensions of the converter are almost fairly compact so it will likely be compatible with most vehicles; however, for larger exhaust system you might to double check.

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Bottom Line
The Flowmaster is a pretty good choice if you are looking for plain and simple catalytic converter that will get the job done.

It is fairly easy to install and requires no assembly so it is perfect for beginner users and makes for an easy DIY job.

7.      Catalytic Converter w/ Exhaust Manifold For 04-08 Chevy Malibu, Pontiac, Saturn Aura

This catalytic converter does speak for itself in many respects but we will still give it a go. With a direct fit design, it is guaranteed to keep up with the state emission laws regarding emission rates while maintaining a healthy flow rate within the exhaust system.

The outer body is made up of a hundred percent stainless steel which makes for long term durability.

The inner body with the precious metals has been designed such that you find no complaints and can avoid that pesky Malfunction Indicator Lamp light for as long as possible.

The flanges on the catalytic converter are designed with EPA compliance laws in mind, and can be easily installed even if you are planning to do it on your own.

The converter comes with a hardware kit as well that contains bolts, and gaskets etc. The catalytic converter is certified by federal emission laws and therefore is highly recommended.

The only drawback is that the fitting seems to be limited only to certain vehicles i.e. the ones mentioned in the title above.

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Bottom Line
This one is somewhat different from the standard catalytic converter design. However, it is still fairly light to medium duty weight with proportions to match so overall, it makes for a good choice!

8.      AUTOSAVER88 ATCC0017 2.25” Inlet/Outlet Universal Catalytic Converter With O2 Port and Heat Shield

The AutoSaver88 is a universal fit model Catalytic Converter has been designed to cater specifically to emission control without compromising on the flow rate.

The outer shell is pure stainless steel and therefore makes for a durable converter. The design and aesthetic is slightly different but that doesn’t make it any less efficient.

The internal body consists of ceramic substrates and is coated throughout with a catalyst for optimal efficiency and controlling emissions.

The inlet and outlet pipes are approximately 2.25 inches in diameter while the whole pipe is about 13 inches stretching from one end to another. The exhaust pipe itself is also 2.25 inches in length.

The design of the catalytic converter is fairly compact and is really lightweight, weighing only about three or so pounds. The dimensions are proportionate to most vehicles as well.

The converter is marketed as a heavy duty product and contains an Oxygen sensor port as well as a heat shield to protect the internal and external from exposure of any kind.

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Bottom Line
Overall the AutoSaver88 is a smart choice for a catalytic converter. The only potential drawback, if you consider it one, is that you probably need to invest in professional services for getting it installed in your vehicle so look out for that.

9.      AUTOSAVER88 ATCC0006 2.5” Inlet/Outlet Universal Catalytic Converter

AutoSaver88 is a Universal fit catalytic converter with stainless steel construction in order keep emissions under control while simultaneously maintaining a steady flow rate.

Internally, it has a catalyst coating and ceramic substrates that keep the internal reactions and structure up and running. The inlet and outlet diameter is about 2.5 inches while the total length is approximately 11 inches.

With these dimensions, it also weighs slightly less i.e. just short of three pounds. Similar to the previous AutoSaver88 model, this one does not come with hardware kit either and may need professional services in order to be installed.

Another potential drawback is that it is not complaint for use in the state of California, United States, bordering on illegal. Therefore if you are a resident of California then this one isn’t for you.

Other than that, it is supposed to be compatible with vehicles manufactured in the year 1996 or afterwards till date. It does not fold up, but in all other respects, it is in fact complaint with EPA regulations.

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Bottom Line
These two AutoSaver88 models (the aforementioned included) have fairly similar features as compared to one another.

Both are universal fit designs and are found compatible with most vehicles, save for the installation bit which does require some extra effort but if you think it is well worth it then by all means go for it!

Read Also: How Long Do Catalytic Converters Last?

10.  Walker 16370 Direct Fit Catalytic Converter

The Walker 16370 Direct Fit Catalytic Converter is another stainless steel constructed model with ceramic substrates deposited on the internal plates. Albeit a bit unusual to look at, it is right up there by some of the most recommended converters.

For starters, it is complaints with more OBDII vehicles which means that it is compatible with almost all the vehicles manufactured in 1996 or later. This encompasses a fair amount of newer models as well.

From one end of the pipe to another i.e. one flange to another, there are bolts to install the catalytic converter in place since it is a direct fit design.

This means that it can be fitted easily with your exhaust system with no additional tools required. The internal structure is also loaded generously with precious metal coating as well as a washcoat, which may be slightly unconventional but it is said to enhance efficiency.

The pipes themselves are aluminized and contain heat shields as an added layer of protection from any kind of exposure.

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Bottom Line
The Walker Direct fit catalytic converter does seem to check all the boxes when it comes to structural integrity and performance.

However, since compatibility is a bit unclear, it is better that you check with a professional before opting for this model.

Read Also: How to Unclog a Catalytic Converter

Buyer’s Guide

Before settling on which catalytic converter is best for you, it is imperative that you do your research because there are several different factors that you have to consider before you reach a decision.

Taking these factors into account will not only save you time but will also streamline your choices to some degree, which will ultimately make it easier to choose a product that suits you the best. Therefore, let’s jump into this before we digress!

Check for Two-way/Three-way Functionality

Now there are two main types of catalytic converters on the market, namely, Two-way converters and Three-way converters.

The Two-way is your standard catalytic converter while the Three-way has the added function of controlling the emissions of nitrous oxide that is highly toxic and harmful to the environment.

Therefore the best course of action is to consider both options as well as the emission laws in your state or area to decide which one will be better for you.

Compatibility

Before you decide on a particular catalytic converter, it is integral that you check if it is even compatible with your car.

For this purpose, it is recommended that you double check every model with the year of release, as well as the make and model of your own car. In addition, it is important to check the level of emissions your car produces.

If the catalytic converter you choose is compatible with controlling them according to state laws.

Converter Grade

Vehicles have different levels of emissions depending on where they were manufactured and their respective models etc. Therefore it is important to gauge the kind of converter grade that your vehicle qualifies for.

For instance, most catalytic converters come with two different options. In this case, it is recommended that you keep tracks on the level of emissions produced by your car.

In addition, you can consult your local mechanic in order to decide which grade you should be buying.

Configuration

Another thing to consider is whether you should be purchasing a universal fit catalytic converter or a direct fit converter.

The Direct fit model of course can fitted directly to your vehicles without any additional welding etc, while the universal fit model do require some work. Both can be fitted on your own, although you will extra materials for the latter.

Both designs have their pros and cons and it is better to consult a professional to decide which model will work better on your car specifically.

Related Article: Driving With a Bad Catalytic Converter

Frequently Asked Questions

Before going ahead and investing in a catalytic converter, you probably have some questions that need to be answered before you can settle on a decision.

Hopefully some of the following FAQs will play a part in satisfying some, if not all, of your queries.

1. 1. What do catalytic converters do?

Vehicles produce a fair amount of toxic gases that can be harmful, bordering on fatal, if released untreated to the atmosphere. Therefore, catalytic converters are fitted in vehicles to convert these toxins into harmless gases.

1. 1. What are catalytic converters made of?

Catalytic converters are usually made up of some form of metal. Most commonly you will come across stainless steel construction for the outer body with Aluminum coating on the inside for durability.

1. 1. What is a catalytic converter worth?

The worth or value of a catalytic converter can vary depending on the amount of precious metals that are inside the converter itself. This is of course vastly different for different models and manufacturers.

1. 1. What metal is in catalytic converters?

The most renowned metal in a catalytic converter is Platinum, which acts the catalyst itself. Additionally, you can find rhodium, copper, palladium, and iron in there as well.

1. 1. What is the scrap value of catalytic converters?

Once again, the scrap value of a catalytic converter depends on the model, size, age and condition of the converter. Typically scrap parts range anywhere from around USD 50 up to USD 120 or more.

1. 1. Do Tonneau Cover Save GasInside a catalytic converter?

There is a honeycomb type structure made of precious metals. It is on this surface that the catalytic reactions take place to turn toxic exhaust gases to harmless emissions.

1. 1. Do diesel cars have catalytic converters?

Yes, all kinds of vehicles have catalytic converters. For diesel cars in particular, it is typically known as a Diesel Oxidation Catalyst or DOC for short.

1. 1. Do test pipes replace catalytic converters?

If you’re in a pickle and looking for a quick fix then yes, straight test pipes can replace a catalytic converter. However, that is not a permanent solution and a converter needs to be replaced as soon as possible.

1. 1. Do motorcycles have catalytic converters?

Although they are not easily visible, most motorcycles do have catalytic converters. However, there are some exceptions but the numbers have greatly reduced since emission laws have become stricter.

1. 1. Do I need to replace both catalytic converters?

Most cars come with only one catalytic converter but there are some who have two. The second one is more of a backup, however, if anything goes wrong, it is best to consult with a mechanic before you go and spend hundreds of dollars replacing both converters.

Final Thoughts

Now as we reach the end of our reviews, you probably feel much more at ease regarding the prospect of buying a catalytic converter.

Since this is an important component of any vehicle, you cannot do without it. Similarly, you need one that you can use for the long haul without it being too much of a burden on your budget.

For any more queries or questions, feel free to get in touch with us via email at any time.