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Top Catalytic Converters for Direct OEM Replacement

Curated from 594 real Reddit comments and discussions across 18 products.

Refreshed on: April 17, 2025

Snoop’s Take

Reddit vets crown winners built from high-grade stainless steel, slathered in precious metals, offering true direct-bolt fitment and warranties that don’t evaporate. These units ace smog checks (in 46 states, at least) and dodge perpetual CEL drama. Losers dangle bargain prices but clog, spit codes, or ghost you post-sale—especially the cheapies outlawed in CA/NY/CO/ME. Watch out for flimsy build claims, murky catalyst loads, and brands that vanish when warranty time arrives. Bottom line: invest in EPA-compliant workhorses that blend premium performance with budget-friendly sanity, or get ready for roadside horror stories.

As an Amazon Associate, I earn from qualifying purchases.

Top Considerations Before Purchasing

Verify emissions compliance - Check state restrictions before purchase.
Prioritize direct-fit ease - Bolt-on installation saves time and hassle.
Balance cost vs quality - Cheap parts risk quick failure.
Confirm warranty coverage - Prefer lifetime or robust guaranteed replacements.

All Products that we Rated

Our Winner
Performance EnhancementDirect OEM ReplacementCheck Engine Light Repair
FOMIUZY High Flow Front Catalytic Converter Kit
8.9
FOMIUZY High Flow Front Catalytic Converter Kit

Buy on Amazon at $219

Read Our Full Review

Reddit Feedback
U
“Cheap catalytic converters? Are they fake?”➕
U
“Had one in the past, worked fine for the four years I had the car, but was for a petrol engine.”➕
U
“Catalytic Converter replacement So these animals finally got to my catalytic converter. You guys have any recommendation...”➕
Snoop Score Breakdown
Sentiment
10.0
Popularity
10.0
Feautures
8.1
✅ Recommended
Our Runner Up
Check Engine Light RepairPerformance EnhancementDirect OEM Replacement
FOMIUZY High Flow Front Catalytic Converter Kit
8.2
FOMIUZY High Flow Front Catalytic Converter Kit

Buy on Amazon at $91

Read Our Full Review

Reddit Feedback
U
“Catalytic Converter replacement So these animals finally got to my catalytic converter.”➕
U
“Amazon, FOMIUZY, $50”➕
U
“Most of the time the off-brand or economy ones are lower quality.”➕
Snoop Score Breakdown
Sentiment
10.0
Popularity
10.0
Feautures
6.9
✅ Recommended

Other Products the Community Recommends

Direct OEM ReplacementCheck Engine Light RepairPerformance Enhancement
Parts-Diyer Catalytic Converter for Nissan Murano 2009-2014
7.4
Parts-Diyer Catalytic Converter for Nissan Murano 2009-2014

Buy on Amazon at $238

Read Our Full Review

Reddit Feedback
U
“Is it worth replacing my catalytic converter? [deleted]”➕
U
“Catalytic converters go bad for basically two reasons…”➕
U
“You can gamble the $20, but it's unlikely to do anything.”➕
Snoop Score Breakdown
Sentiment
5.0
Popularity
8.6
Feautures
8.1
✅ Recommended
Check Engine Light RepairPerformance EnhancementDirect OEM Replacement
KLN Catalytic Converter Gasket Kit for Chevy Equinox & GMC Terrain
6.9
KLN Catalytic Converter Gasket Kit for Chevy Equinox & GMC Terrain

Buy on Amazon at $169

Read Our Full Review

Reddit Feedback
U
“Catalytic converters go bad for basically two reasons…”➕
U
“Stuff like cataclean is mostly snake oil - it can help with a specific type of failure, however that failure probably is...”➕
U
“P0420 doesn’t. Mean you have a bad cat. It can also be thrown when the catalytic converter is working perfectly, but the...”➕
Snoop Score Breakdown
Sentiment
5.0
Popularity
5.0
Feautures
7.8
✅ Recommended

Products You Will Return...

AutoShack Catalytic Converter Direct Fit Replacement
1.0
AutoShack Catalytic Converter Direct Fit Replacement

Buy on Amazon at $87

Read Our Full Review

Reddit Feedback
U
“Auto Shack is a cheap brand.”➕
U
“We need a new catalytic converter. So that my husband did is put the car in nutural. And it passed smogg with the check ...”➕
U
“These fly by night websites just want your money and info, lucky if you get anything at all let alone the correct part.”➕
Snoop Score Breakdown
Sentiment
0.0
Popularity
0.0
Feautures
1.8
❌ Not Recommended
Check Engine Light RepairEmissions Compliance UpgradePerformance Enhancement
MAC Left & Right Catalytic Converters for Cadillac CTS
1.6
MAC Left & Right Catalytic Converters for Cadillac CTS

Buy on Amazon at $709

Read Our Full Review

Reddit Feedback
U
“So in short, they might work, but you may have to put some time and energy into getting the results you want.”➕
U
“Cheap cats are just that cheap. Not fake but fit might be poor.”➕
U
“So, even if it costs you a couple hundred to fix, consider yourself lucky.”➕
Snoop Score Breakdown
Sentiment
0.0
Popularity
0.0
Feautures
0.9
❌ Not Recommended

Compare On All Talked About Dimensions

Product NameImagePriceScoreCompareSee DetailsBuy Now
FOMIUZY High Flow Front Catalytic Converter KitFOMIUZY High Flow Front Catalytic Converter Kit$219
8.9
DetailsBuy
FOMIUZY High Flow Front Catalytic Converter KitFOMIUZY High Flow Front Catalytic Converter Kit$91
8.2
DetailsBuy
Parts-Diyer Catalytic Converter for Nissan Murano 2009-2014Parts-Diyer Catalytic Converter for Nissan Murano 2009-2014$238
7.4
DetailsBuy
KLN Catalytic Converter Gasket Kit for Chevy Equinox & GMC TerrainKLN Catalytic Converter Gasket Kit for Chevy Equinox & GMC Terrain$169
6.9
DetailsBuy
PULCHERFLOW Catalytic Converter for Subaru ModelsPULCHERFLOW Catalytic Converter for Subaru Models$157
6.8
DetailsBuy
A-Premium Front Left Catalytic Converter KitA-Premium Front Left Catalytic Converter Kit$96
6.5
DetailsBuy
FOMIUZY Catalytic Converter for Subaru Models 2011-2017FOMIUZY Catalytic Converter for Subaru Models 2011-2017$141
6.4
DetailsBuy
A-Premium Front Catalytic Converter with Gasket KitA-Premium Front Catalytic Converter with Gasket Kit$172
6.1
DetailsBuy
JT High Flow Catalytic Converter for Chevy and GMC ModelsJT High Flow Catalytic Converter for Chevy and GMC Models$196
5.7
DetailsBuy
Parts-Diyer Catalytic Converter Kit for Honda AccordParts-Diyer Catalytic Converter Kit for Honda Accord$40
5.6
DetailsBuy
ZAIGANMA Front Left & Right Catalytic ConverterZAIGANMA Front Left & Right Catalytic Converter$117
5.3
DetailsBuy
ZAIGANMA Front Left Catalytic ConverterZAIGANMA Front Left Catalytic Converter$109
4.8
DetailsBuy
Parts-Diyer Catalytic Converter for Honda Civic 2006-2011Parts-Diyer Catalytic Converter for Honda Civic 2006-2011$82
4.5
DetailsBuy
Walker Ultra EPA 16299 Catalytic Converter for Honda AccordWalker Ultra EPA 16299 Catalytic Converter for Honda Accord$207
3.4
DetailsBuy
ANRUI Catalytic Converter Cleaner KitANRUI Catalytic Converter Cleaner Kit$17
3.1
DetailsBuy
RZOCARULE Catalytic Converter for Chevrolet and BuickRZOCARULE Catalytic Converter for Chevrolet and Buick$75
2.6
DetailsBuy
MAC Left & Right Catalytic Converters for Cadillac CTSMAC Left & Right Catalytic Converters for Cadillac CTS$709
1.6
DetailsBuy
AutoShack Catalytic Converter Direct Fit ReplacementAutoShack Catalytic Converter Direct Fit Replacement$87
1.0
DetailsBuy

Products that are Best For...

From no-nonsense quick fixes to lifetime-guaranteed performance, our 'Best By Use Case' picks have you covered. Community favorites excel by purpose, performance, and price.

Check Engine Light Repair
KLN Catalytic Converter Gasket Kit for Chevy Equinox & GMC Terrain

This product is designed to replace failing OEM catalytic converters, specifically addressing P0420 and P0430 fault codes, effectively restoring the vehicle's emission control functionality.

Buy on AmazonRead our full review
Emissions Compliance Upgrade
A-Premium Front Left Catalytic Converter Kit

The A-Premium catalytic converter is EPA-compliant, making it suitable for users looking to meet federal emissions standards, although it cannot be installed in certain states.

Buy on AmazonRead our full review
Performance Enhancement
KLN Catalytic Converter Gasket Kit for Chevy Equinox & GMC Terrain

With its high-temperature resistant ceramic carrier and increased catalyst surface area, this catalytic converter is engineered to reduce backpressure, contributing to enhanced throttle response and o...

Buy on AmazonRead our full review
Direct OEM Replacement
Parts-Diyer Catalytic Converter for Nissan Murano 2009-2014

This product is a direct-fit replacement that matches OEM specifications, ensuring a seamless installation process. Feedback indicates that it is compatible with the original vehicle, making it an eas...

Buy on AmazonRead our full review

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