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2.25" Inlet/Outlet High Flow Universal Catalytic Converter Direct-Fit with O2 Port & Heat Shield (EPA Compliant)

  • Based on 295 reviews
Condition: New
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Availability: 18 left in stock
Fulfilled by Amazon

Arrives Thursday, Sep 4
Order within 12 hours and 4 minutes
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Size: 2.25 Inch


Color: with O2 Port & Heat Shield


Features

  • Regional Sales Restrictions: This product is not approved for use in vehicles registered in California (CARB-compliant), Colorado, New York, or Maine due to stricter emissions regulations (e.g., Euro V/VI or CARB Tier 3 standards). The product fully complies with OBD3 emissions standards, ensuring catalytic efficiency and durability meet U.S. federal EPA requirements.
  • Fault Remediation & Direct Replacement: Designed to address P0420 engine codes (catalytic efficiency below threshold) or catalytic converter theft scenarios. Engineered for seamless integration with OEM interfaces, factory pre-tested for guaranteed compatibility with your vehicle to eliminate exhaust leaks, abnormal noise, and system malfunctions.
  • Universal Specifications: 2.25-inch inlet/outlet diameter (outer), 13-inch total length. Compatible with most vehicles under 3.0L displacement. Users are advised to verify original exhaust pipe dimensions prior to installation. For engines 3.0L or larger, a parallel dual-catalyst welding configuration is recommended to prevent exhaust flow overload and subsequent P0420 fault triggers.
  • Performance Upgrade: Stainless steel housing paired with a dual-layer high-temperature-resistant ceramic honeycomb substrate increases catalytic surface area and optimizes exhaust flow velocity, reducing backpressure for enhanced engine power and fuel efficiency (verified 4-7% improvement in real-world testing). Industry-leading precious metal coating (platinum, palladium, rhodium) ensures maximum conversion efficiency of CO, HC, and NOx emissions, achieving near-Euro IV cleanliness levels and contributing to PM2.5 particulate reduction.
  • Worry-Free Purchase: Backed by a 2-year/50,000-mile warranty covering core functional failures, material defects, and manufacturing flaws. Every unit undergoes rigorous pre-shipment testing to ensure performance reliability and regulatory compliance, delivering peace of mind throughout the product lifecycle.

Description

Core FunctionCatalytically convert the three main harmful substances in engine exhaust gases: Carbon monoxide (CO) → Carbon dioxide (CO₂)Hydrocarbons (HC) → Water (H₂O) and carbon dioxide (CO₂)Nitrogen oxides (NOx) → Nitrogen (N₂) and oxygen (O₂) Structure and PrincipleCarrier: Honeycomb-shaped ceramic or metal structure, with the surface coated with catalysts (such as platinum, palladium, rhodium and other precious metals). Catalytic reaction:Reduction reaction: Treat NOx, decomposing it into nitrogen and oxygen.Oxidation reaction: Treat CO and HC, converting them into carbon dioxide and water.Working conditions: High temperature and appropriate air-fuel ratio, with oxygen sensors for control. Common causes of faultsFuel/oil issues:Low- quality fuel containing sulfur, lead, or oil combustion residues can cause the catalyst to become "poisoned".Carbon deposits blockage: Long-term low-speed driving or incomplete fuel combustion can lead to blockage.Physical damage: Bumping or high-temperature sintering can cause the carrier to break.Abnormal mixture: Imbalanced air-fuel ratio (such as fuel injection failure) can cause the catalytic converter to overheat and fail. Symptoms of the malfunction:- A pungent odor in the exhaust and excessive emissions.- Reduced engine power and increased fuel consumption.- Warning lights on the dashboard (such as an OBD indication of low catalytic converter efficiency,P0420,P0430). Maintenance suggestions:Use genuine fuel and low ash engine oil to prevent impurities from damaging the catalyst.Regularly inspect the ignition/fuel injection system to prevent overly rich mixture or misfire.After long-distance driving, run the vehicle at a moderate high speed to help burn off carbon deposits.Avoid driving through water or dragging the undercarriage to prevent damage to the carrier. Replacement costThe original factory catalytic converter is relatively expensive (hundreds to thousands of dollars) due to the presence of precious metals.OEM parts or repair solutions are less costly, but compliance should be taken into account.Note: If the vehicle fails the annual inspection due to a failed catalytic converter, it is recommended to first check the oxygen sensor or clean the carbon deposits, as a direct replacement may not be necessary.

Manufacturer: ‎WaSaett


Brand: ‎WaSaett


Model: ‎Universal High Flow Catalytic Converter


Item Weight: ‎3.72 pounds


Package Dimensions: ‎14.21 x 4.84 x 4.8 inches


Country of Origin: ‎China


Item model number: ‎001


Exterior: ‎ordinary


Manufacturer Part Number: ‎A00020


Date First Available: November 30, 2022


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Thursday, Sep 4

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Top Amazon Reviews


  • Bien
Size: 2.25 Inch Color: with O2 Port
Perfecto para mi jetta
Reviewed in the United States on February 26, 2025 by Mejia

  • Good value for the money
Size: 3 Inch Color: with O2 Port & Heat Shield
Theres no way this cheapo thing actually contains the metals needed to work, dont buy this to try and pass smog, BUT for $35 what you do get is a solidly welded 3" "cat" that takes about 5-min and zero effort to turn into a straight pipe so you can pass your local visual emissions inspection.
Reviewed in the United States on October 9, 2024 by caleb maney

  • Fits perfect
Size: 2 Inch Color: with O2 Port & Heat Shield
I was able to get back on the road thanks to finding this cat. Inspection passed
Reviewed in the United States on January 2, 2025 by Ashley Kinney

  • Catlic
Size: 3 Inch Color: with O2 Port & Heat Shield
Have not put in yet but looks, feel solid
Reviewed in the United States on October 7, 2024 by Jl

  • Could tell the difference immediately
Size: 2.5 Inch Color: with O2 Port & Heat Shield
The price point was definitely right for my budget and the symptoms of a clogged catalytic converter were gone after installing the product.. Would purchase again if necessary.
Reviewed in the United States on December 9, 2024 by Holly Mathews

  • Durability is not a strong suit! Honeyomb is loose after under 500 miles
Size: 2 Inch Color: with O2 Port & Heat Shield
The media could not be loaded. Installed this catalytic converter in my Corolla in late October 2024, and yesterday December 22 2024, I started getting a loud rattling noise from under my car. Jacked it up to find the noise coming from the cat, some wacks and shaking with my hand and reaching into the O2 sensor bung with a socket extension showed me that the honeycomb inside is loose. I can push it fully to the back of the casing, and pull it forward as well. Made it kinda stay in place by denting the case, and putting a sheet metal screw into the honeycomb. But I guess I'll be looking for a replacement soon as this cat is not up to snuff! ... show more
Reviewed in the United States on December 24, 2024 by Rich4369

  • Sure, it works and seemed durable, but not for very long.
I don't believe this product worked, and I also don't believe it was functioning with my 02 Sensor. Benefit of doubt that it was an issue on my end.
Reviewed in the United States on April 10, 2025 by Alekzander

  • good deal
Size: 2.25 Inch Color: with O2 Port & Heat Shield
All good
Reviewed in the United States on January 25, 2025 by jason j

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