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Catalytic Converter
This photo shows the same type of part you'll receive. Since each used part has its own wear and scratches, yours may look slightly different. Check the product notes for details about the condition of this specific part.

2021 - 2023 Chevrolet Trailblazer Front Catalytic Converter (OEM)

Only 1 left in stock
Price today
$439.95
− $60 core refund
YOUR NET COST
$379.95
after returning your old part
✓ Prepaid core return label

✓ EPA RE-CERTIFIED CATALYTIC CONVERTER

What is a recertified catalytic converter? A converter that has been performance tested and passes EPA guidelines for certified converters. Each unit includes a permanent tag with its part number, recertification facility, and date of recertification.

  • 1-Year Warranty (parts only, no labor)
  • OEM bolt-on design (not weld-in)
  • Donor vehicle VIN available on request
  • Return your old cat to receive $60 refund

ℹ️ Product Notes

This is a used part in like-new condition. This is a recertified original equipment part for a 1.2L engine.

Fits 1.2L 3-cylinder turbo engines only. This is the front "warm-up" section of the converter assembly.
Condition: Excellent (A)
Like new, minimal to no wear
4,973 miles
Odometer reading when part was removed
See Other Chevrolet Trailblazer Catalytic Converters
SKU #
4341714-02G4MG.533

Why Buy Used OEM Parts?

✓ Quality-Verified: Every used OEM part we sell has been professionally inspected and tested to ensure it meets our quality standards. While it may show some cosmetic wear from previous use, it's fully functional and ready to install.

✓ Original Equipment: This is a genuine OEM (Original Equipment Manufacturer) part - the exact same part that came with your vehicle from the factory. It's designed specifically for your make and model, ensuring perfect fitment and performance.

✓ Works Like New: Despite some visual wear, this part will perform just as well as a brand new one. The internal components and functionality are intact, giving you the same reliability you'd expect from OEM quality.

✓ Significant Savings: Save 50-80% compared to buying new! Used OEM parts offer exceptional value - you get factory quality at a fraction of the cost. It's the smart choice for budget-conscious vehicle owners who won't compromise on quality.

✓ Risk-Free Purchase: We stand behind our re-certified catalytic converters with a generous 1-year warranty, 30-day returns, and 100% money-back guarantee. If it doesn't work out for any reason, simply return it for a full refund. You have nothing to lose!

🛡️ 30-Day Returns + 1-Year Warranty - Buy with Confidence!

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Vehicle Fitment Guide

This part fits the following vehicles:

Chevrolet
Trailblazer 2021-2023 (tapclick to expand)(tapclick to hide)
Swipe left/right to see more info
SubmodelSUB-
MODEL		 Body Style Years Engine Attributes
L SUV 2021 - 2022 L3 1.2L Turbo FWD | Automatic CVT
LS SUV 2021 - 2023 L3 1.2L Turbo AWD | Automatic
LS SUV 2021 - 2023 L3 1.2L Turbo FWD | Automatic CVT
LS SUV 2021 - 2023 L3 1.2L Turbo AWD | Automatic CVT
LS SUV 2021 - 2023 L3 1.2L Turbo FWD | Automatic
LT SUV 2021 - 2023 L3 1.2L Turbo AWD | Automatic
LT SUV 2021 - 2023 L3 1.2L Turbo FWD | Automatic
LT SUV 2021 - 2023 L3 1.2L Turbo AWD | Automatic CVT
LT SUV 2021 - 2023 L3 1.2L Turbo FWD | Automatic CVT

⚠️ Important: Please verify your vehicle's year, make, model, and specifications before ordering. If you're unsure about fitment, contact our customer service team for assistance.

Policies

Shipping & Handling

  • Standard shipping: 3-7 business days via UPS Ground
  • Parts are carefully packaged to prevent damage during transit

Returns (30 Days)

We accept returns within 30 days of delivery for this part.

  • Defective parts: We will replace the part or issue a refund at our discretion
  • Electronic parts: Must be returned with the sealed inspection bag unopened. The clear bag allows full visual inspection before opening. Once opened, electronic parts can only be exchanged for a replacement if defective — no refunds
  • Programming: "Needs to be programmed to my vehicle" is not a valid return reason. Many modules require dealer programming — we're happy to help connect you with resources if your dealer says it's not programmable
  • Return shipping: We cover return shipping as part of our 100% money-back guarantee
  • Parts must be returned in original packaging and unmodified condition
  • Poorly packaged returns that arrive damaged will not be credited

1-Year Warranty

This EPA re-certified catalytic converter includes a 1-year warranty (parts only, no labor) from the date of purchase.

  • If your converter fails within 1 year, we will send a replacement
  • Warranty covers parts only — labor is not included
  • Warranty covers defects — not installation errors, misuse, or damage after installation

Note: Warranty is for replacement only. Return window for refunds is 30 days.

Damaged in Shipping?

If your part arrives damaged:

  • Stop immediately — do not install the part
  • Keep all original packaging and boxes
  • Take clear photos of the damage and packaging
  • Contact us within 48 hours of delivery

We will handle the carrier claim. You are not responsible for shipping damage — we just need your help documenting it.

Order Cancellation

Orders can be cancelled before shipment for a full refund. Once shipped, cancellations follow our return policy.

Symptoms & Diagnosis

Warning Signs of a Failing Catalytic Converter

  • Reduced engine power and acceleration
  • Poor fuel economy
  • A rattling sound coming from underneath the car
  • The check engine light is on
  • Failing an emissions test
  • A sulfur or rotten egg smell

Testing the Catalytic Converter

  1. Visually inspect the converter for damage.
  2. Check for exhaust leaks before and after the converter.
  3. Use a scan tool to check the oxygen sensor readings. The downstream sensor should have a smoother reading than the upstream sensor.
  4. A back pressure test can be performed to check for a clogged converter.

Common Causes of Catalytic Converter Failure

  • Contamination from coolant or oil leaks
  • Overheating due to engine misfires
  • Physical damage from road debris
  • Old age and normal wear and tear

Buyer's Checklist

What to Look For When Buying

  • Make sure the converter is designed for your vehicle's year, make, and model.
  • Check for any visible damage, such as dents or rust.
  • Read reviews from other buyers.

Quality Indicators

  • Look for converters made from durable materials like stainless steel.
  • Check for proper welds and construction.
  • Ensure the converter meets EPA standards.

What's Typically Included

  • The catalytic converter itself
  • Gaskets (sometimes included, sometimes sold separately)
  • Mounting hardware (sometimes included, sometimes sold separately)

Installation Overview

Difficulty Level and Estimated Time

  • Difficulty: Moderate
  • Estimated Time: 1-3 hours

Special Tools Needed

  • Socket set
  • Wrench set
  • Oxygen sensor socket (if replacing oxygen sensors)
  • Jack and jack stands
  • Penetrating oil

Critical Steps and Tips

  1. Disconnect the negative battery cable.
  2. Spray penetrating oil on the bolts holding the converter in place.
  3. Remove the old converter.
  4. Install the new converter with new gaskets.
  5. Tighten all bolts to the proper torque specifications.
  6. Reconnect the negative battery cable.

DIY or Professional Installation?

  • DIY is possible for mechanically inclined individuals.
  • Professional installation is recommended if you are not comfortable working on your car or if you lack the necessary tools.

Buying Options

Compare: Used OEM, Refurbished OEM, New Aftermarket

OptionDescription
Used OEMGenuine factory part, tested and inspected, at a lower price.
Refurbished OEMFactory part professionally restored with new components.
New AftermarketBrand new third-party part built to original equipment specifications (OE specs).

Used OEM

  • Offers the best value.
  • Genuine factory part.
  • Tested and inspected for proper function.
  • Significantly lower price than new.

Refurbished OEM

  • Factory part that has been professionally restored.
  • May include new internal components.
  • A good balance between price and reliability.

New Aftermarket

  • Brand new part from a third-party manufacturer.
  • Built to meet or exceed original equipment specifications.
  • Can be a cost-effective alternative to OEM.

Typical Lifespan

How Long This Part Normally Lasts

  • A catalytic converter typically lasts between 70,000 and 100,000 miles.

Factors That Affect Longevity

  • Engine maintenance (oil changes, tune-ups)
  • Driving habits (frequent short trips can shorten lifespan)
  • Fuel quality
  • Exposure to road salt and other contaminants

Price Ranges

Budget vs Mid-Range vs Premium Options

  • Used OEM: $150 - $300
  • Refurbished OEM: $250 - $400
  • New Aftermarket: $300 - $500

Labor Cost Considerations

  • Professional installation typically costs between $100 and $300.

Total Job Cost Estimates

  • DIY: $150 - $500 (parts only)
  • Professional Installation: $250 - $800 (parts and labor)

Vehicle-Specific Notes

Known Issues

  • Some 2020-2023 Buick Encore GX and Chevrolet Trailblazer models have experienced premature catalytic converter failure due to engine issues causing excessive oil consumption.
  • Check for any engine codes related to misfires or lean/rich conditions.

TSBs or Common Complaints

  • Consult your vehicle's service manual or a trusted mechanic for any applicable Technical Service Bulletins (TSBs) related to catalytic converter issues.

Verification After Install

How to Confirm Proper Operation

  • Check for any exhaust leaks.
  • Monitor the check engine light. It should turn off after a short drive if the converter is functioning properly.
  • Use a scan tool to check the oxygen sensor readings.

What to Look/Listen For

  • The engine should run smoothly and efficiently.
  • There should be no unusual noises or smells.
  • Fuel economy should return to normal.

FAQ

Q: How do I know if my catalytic converter is bad?
A: Common signs include reduced engine power, poor fuel economy, a rattling sound, and the check engine light being on.

Q: Can I drive with a bad catalytic converter?
A: It's not recommended. A bad converter can damage your engine and reduce fuel economy. It can also cause you to fail an emissions test.

Q: Will a bad catalytic converter affect my gas mileage?
A: Yes, a failing catalytic converter can significantly reduce your fuel economy.

Q: How often should I replace my catalytic converter?
A: Catalytic converters typically last between 70,000 and 100,000 miles, but this can vary depending on driving conditions and maintenance.

Q: Are aftermarket catalytic converters as good as OEM?
A: New aftermarket converters built to OE specs can be a good alternative to OEM, offering similar performance at a lower price.

Part Specifications

OEM Part Numbers:

  • GM: 55495073, 55515139

Fits Years: 2021 2022 2023

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