https://www.youtube.com/watch?v=XZjZf-lNLew
Leif Hansen walks you through the differences between a factory made catalytic converter and a non-OEM catalytic converter. In showcasing these differences,

https://catalyticconvertersolutions.com/oem-vs-aftermarket-catalytic-converters/
To summarize the major points comparing OEM and aftermarket catalytic converters: OEM converters guarantee perfectly matched fit and emissions compliance but cost significantly more. Aftermarket converters are mass-produced more generically but far cheaper. Fitment and quality vary. OEM converters are proven to last over 10 years.

https://www.deboersauto.com/blog/oem-vs-aftermarket-catalytic-converters-which-is-the-best-option
A catalytic converter is an expensive part to replace. The cost of OEM and aftermarket parts vary depending on quality and where you purchase them, but as a general rule of thumb, an aftermarket catalytic converter typically costs a fraction of an OEM model. On the other hand, the saying "you get what you pay for" is usually accurate.

https://kneblesauto.com/blog/exhaust-systems/comparing-oem-vs-aftermarket-catalytic-converters/
Also know that OEM converters are designed to fit specifically for that make and that model. There may also be a difference in the warranty of an aftermarket catalytic converter, and an OEM converter. So most importantly, make sure the converter you choose is going to meet the standards of your state.

https://www.fiix.io/car-advice/articles/Should-You-Buy-An-Aftermarket-Catalytic-Converter
The main benefit of an aftermarket catalytic converter is… money. An aftermarket catalytic converter can save you over 80% on the price of a new one, costing less than $200, and sometimes as low as $60. However, there are significant downsides in purchasing aftermarket, and you should be aware of them before making your decision.

https://www.cars.com/articles/whats-a-catalytic-converter-and-why-do-people-steal-them-446861/
Money is the main reason catalytic converters are often stolen. They contain three metals that aid in the chemical reaction that makes exhaust pollutants less harmful: platinum, palladium and

https://www.autozone.com/diy/exhaust/what-is-the-catalytic-converter-and-what-does-it-do
Your catalytic converter, sometimes called the cat, uses a catalyst to convert the more harmful compounds of your engine's emissions. Typically, a combustion engine emits numerous harmful compounds. In order to protect the environment and prevent you and your family from being exposed to poisonous gases, every vehicle is required to have a

https://noble6.com/oem-catalytic-converters-vs-aftermarket/
Since the manufacturer must load OEM catalytic converters with a higher dose of precious metals, the OEM converters are more expensive to purchase and have a greater return when recycling than after market catalytic converters. OEM catalytic converters are made of higher quality materials, built to withstand the stresses of extended use

https://en.wikipedia.org/wiki/Original_equipment_manufacturer
Supply chain pyramid. An original equipment manufacturer (OEM) is generally perceived as a company that produces parts and equipment that may be marketed by another manufacturer.The term is also used in several other ways, which causes ambiguity. It sometimes means the maker of a system that includes other companies' subsystems, an end-product producer, an automotive part that is manufactured

https://en.wikipedia.org/wiki/Catalytic_converter
A three-way catalytic converter on a gasoline-powered 1996 Dodge Ram Simulation of flow inside a catalytic converter. A catalytic converter is an exhaust emission control device which converts toxic gases and pollutants in exhaust gas from an internal combustion engine into less-toxic pollutants by catalyzing a redox reaction.Catalytic converters are usually used with internal combustion

https://apemissions.com/understanding-catalytic-converter-function-and-performance/
A catalytic converter is an emissions control device that decreases the harmful gases present in tailpipe emissions. Untreated tailpipe exhaust pollutants combine in the air and the sun to create smog, which is a major public health hazard known to reduce lung function. No one wants to breathe dirty air and catalytic converters are the best

https://www.carfax.com/blog/oem-vs-aftermarket-parts
Advantages of aftermarket parts. More affordable: Aftermarket car parts are often less expensive than OEM parts, although prices - and quality - vary by brand. If a part seems unusually inexpensive, do your research to make sure you're not sacrificing quality. Availability: Many gas stations and auto repair shops use and sell aftermarket

https://www.edmunds.com/car-maintenance/aftermarket-versus-manufacturer-car-parts.html
A 2022 study by AutomotiveResearch.com found that aftermarket parts accounted for about 50% of total parts purchases from independent repair shops. More than 30% of the 500 shops surveyed say they

https://www.hi-techcarcare.com/maintenance/aftemarket-catalytic-converters-are-they-a-good-alternative-to-oem-catalytic-converters/
Manufacturer-sourced catalytic converter replacements/repairs can run well over $1000, so it's not surprising that car owners frequently turn to alternative resources when facing this repair. An aftermarket catalytic converter can save you over 80% on the price of a new OEM version, a significant savings.

https://www.walkerexhaust.com/products/light-vehicle/catalytic-converters.html
Walker Catalytic Converters. Manufactured with a stainless-steel body and aluminized pipe, the Walker direct-fit catalytic converter is designed for easy installation with OE-style hangers, brackets, and heat shield. The Walker Ultra catalytic converter keeps the check engine light off for emissions codes with OE-style high-technology washcoat

https://shop.advanceautoparts.com/r/advice/cars-101/the-truth-about-dealership-vs-aftermarket-parts
New-car buyers are usually told to stick with their dealership for the best Original Equipment Manufacturer (OEM) parts. This is generally solid advice, as the dealership will only sell quality parts that won't void the vehicle's warranty. But the full truth is: Aftermarket auto parts are often the same parts as OEM. Here's a few examples:

https://www.landlproducts.com/
L & L Products, Inc. 3210 Century Drive Rowlett, Texas 75088 (972) 475-5202

https://mechanicbase.com/cars/aftermarket-car-parts-vs-oem-parts/
Aftermarket Parts Pros. Cheaper: Aftermarket parts are often cheaper than OEM parts. Sometimes aftermarket parts can be more expensive, though, so check it carefully before purchase! Potentially High Quality: Even if you think that Aftermarket parts are of worse quality than OEM parts - they can often be made by the same manufacturer. The

https://www.converterwarehouse.com/
Converter Warehouse's Catalytic Converters are O.E. Type, Bolt-On, Direct Fit, with no welding or cutting needed thus making for a fast, clean and easy installation. Here at Converter Warehouse we stock over 1700 different applications of Direct Fit Catalytic Converters for most popular makes and models of cars and light trucks, import and

https://bobistheoilguy.com/forums/threads/aftermarket-catalytic-converter-lifespan.349637/
Cali, Maine, and a couple others require OE or equivalent. They do have to meet EPA regs which are looser than those for OE cats. But the EPA is cool (for once) and understands that an aftermarket replacement is probably going on some beater that's near its end of life. There is an EPA warranty-- 5 year, 50k miles.

https://www.ace-autoparts.com/About/Blog/entryid/40/comparing-genuine-vs-oem-auto-parts-is-there-a-difference
The difference is that they don't carry the manufacturer's logo. OEM parts are just as reliable as genuine parts, but you get them for a better value. 3. Aftermarket Car Parts. Once a car is built, companies can manufacture parts that will work for that vehicle. To do this, they buy the rights to make the parts.

https://www.thegearpage.net/board/index.php?threads/quality-electrolytic-capacitors-which-brands-and-why.2061756/
Whatever Mouser pointed me to first out of the 53 caps they carry that are 22µF and 450vdc. Now maybe those last 3 manufacturers are conservative with their specs, but F&T claims similar or much lower leakage current and similar (or lower) ESR. That leaves quality measurably on-par with good-quality caps.

https://www.stockwiseauto.com/shoptalk/aftermarket-parts-vs-oem-parts-whats-the-difference
OEM and aftermarket parts are the same to the point that they're sometimes manufactured in the same facility. OEM providers simply charge more because of dealer upcharge and the fact that their name is attached to the part. The manufacturing process is more versatile for aftermarket parts, giving buyers more options.