Universal catalytic converters are a great option for those needing to replace a defective catalytic converter on their vehicle. This is because universal catalytic converters can be made to fit many more vehicles than the one that came with your new car and are often less expensive. However, with so many universal catalytic converters on the market today, finding the perfect one can be difficult. We created this guide to simplify your search and showcase the best universal catalytic converters you can buy.
What to Look for in a Catalytic Converter
When searching for a great universal catalytic converter, inlet and outlet size will be very important. Buying one with appropriate sizing will ensure it can be easily installed on your vehicle. Construction and durability will also come into play, as a durable, well-constructed catalytic converter will last longer and perform better than a model of lesser quality. Finally, if you live in a state that requires CARB-compliant aftermarket catalytic converters, you will want to ensure the one you purchase meets CARB emission standards.
Editor’s Choice: Walker Exhaust Standard EPA Catalytic Converter
The Walker Exhaust Standard EPA Catalytic Converter features a durable stainless steel body and does not require a break-in period after installing. This catalytic converter protects the undercarriage of your vehicle from excess heat creation due to its aluminized heat shields and sports expandable bushings for easier installation. For an overall great catalytic converter at a fair price, this Walker catalytic converter is a fantastic choice.
Walker Exhaust Standard EPA 15038 Universal Catalytic Converter
This catalytic converter sports durable construction and aluminized heat shields that protect your undercarriage from extreme heat exposure.
Best Value: AUTOSAVER88 2.25″ Inlet/Outlet Universal Catalytic Converter
The AUTOSAVER88 Inlet/Outlet Universal Catalytic Converter is a great choice for vehicles with a 2.25-inch outer diameter exhaust pipe. This catalytic converter features EPA certification and a heavy-duty stainless steel outer shell for optimal durability. The AUTOSAVER88 Universal Catalytic Converter also increases exhaust flow compared to other models, making this a very efficient option that reduces the amount of pollution your vehicle produces while ensuring that your vehicle’s performance is not affected.
AUTOSAVER88 ATCC0017 2.25" Inlet/Outlet Universal Catalytic Converter with Heat Shield (EPA Compliant)
This catalytic converter features a durable stainless steel outer shell and impressive exhaust flow.
Best CARB-Compliant: Walker CalCat Pre-OBDII Universal Catalytic Converter
The Walker CalCat Pre-OBDII Universal Catalytic Converter is a great choice for those in California or other states that require CARB-compliant replacement catalytic converters. It features a durable stainless steel body and a precise OE-style coating process that ensures it consistently maintains emission compliance. This catalytic converter is also designed for simplified installation, making it a great choice for those looking to lower their vehicle’s emissions.
Walker Exhaust CalCat Carb 80708 Universal Catalytic Converter
This catalytic converter is designed for simple installation and adheres to CARB emission standards.
Also Consider: MagnaFlow 94106 Universal Catalytic Converter
This MagnaFlow Universal Catalytic Converter features a ribbed body for minimized expansion and a monolithic honeycomb catalyst designed to maximize flow. This catalytic converter, which has an inlet diameter of 2.5 inches, is constructed of heavier-gauge stainless steel than similar models, promising long-term durability. For those looking for a high-quality catalytic converter that is as technically sound as it is effective, this is a great pick.
MagnaFlow Universal Catalytic Converter Standard Grade Federal/EPA Compliant 91005 - Stainless Steel 2.25in Inlet/Outlet Diameter, 13in Overall Length, No O2 Sensor - Standard Grade Replacement
This catalytic converter sports heavy-duty stainless steel construction and a monolithic honeycomb catalyst design.