TECHME17 543942 Catalytic Converter 55476 50365 19100 645878 2002/2003/2004/2005 4.2L

( Brand: Techme17 ), ( Type: Catalytic Converter ), ( Inlet Connection Type: Loose Flanges ), ( Features: 100 Accuracy Of Fit/bolt-on Connection/easy To Replace ), ( Manufacturer Part Number: 543942 ), ( Ipn: 55476/645878/50365/19100 ), ( Outlet Connection Type: 2 Bolt Welded Flange ), ( Manufacturer Warranty: 1 Year ), ( Color: Silver ), ( Fitment Type: Direct Replacement ), ( Body Material: Stainless Steel ), ( Universal Fitment: No ), ( Items Included: Bolts/screw ), ( Outlet Type: 2-bolt Welded Flange ), ( Year: 2002/2003/2004/2005 ), ( Fit 2: 2004-2006 Toyota Solara 2.4l ), ( Fitment 2: 2002-2005 Chevrolet Trailblazer 4.2l ), ( Fitment 3: 2002-2005 Gmc Envoy 4.2l ), ( Fitment 4: 2003-2004 Isuzu Ascender 4.2l ), ( Fitment 1: 2004-2005 Buick Rainier 4.2l ), ( Engine: 4.2l L6 ), ( Fitment 5: 2002-2004 Oldsmobile Bravada 4.2l ), ( Emissions: 48-state Legal ), ( Series: 48-state Direct Fit ), ( Substrate Material: Ceramic ), ( Product Fit: Direct Fit ), ( Restricted States: California/colorado/new York/maine ), ( Fitment 6: 2005 Saab 9-7x 4.2l ), ( Fit The Emissions Standard: Obd Iii )

Review TECHME17 2002 2003 2004 2005 Chevrolet Gmc 4.2l Catalytic Converter fits TRAILBLAZER ENVOY

The Techme17 543942 catalytic converter is a high-performance replacement component designed specifically for 2002, 2003, 2004, and 2005 Chevrolet Trailblazer and GMC Envoy vehicles equipped with the 4.2L engine. This catalytic converter is engineered to meet or exceed original equipment manufacturer (OEM) specifications to ensure optimal engine performance and emissions compliance.

This replacement catalytic converter features a robust design with high-quality materials, ensuring durability and reliability. It is made with a 403 stainless steel shell, which is more robust than the original catalytic converter's standard 409 stainless steel shell, providing extra protection against corrosion and damage.

The Techme17 543942 catalytic converter is designed to reduce exhaust gas emissions by converting harmful pollutants, such as carbon monoxide, hydrocarbons, and nitrogen oxides, into less harmful gases through a series of burning and chemical reactions. This process not only helps to reduce exhaust emissions but also improves engine efficiency and fuel economy by ensuring complete combustion of fuel in the engine.

This catalytic converter is CARB (California Air Resources Board) and Federal Emissions compliant, making it a legal and effective solution for vehicles subject to emissions regulations. Installation is straightforward and can be completed using standard tools by a competent mechanic or through professional servicing.

Overall, the Techme17 543942 catalytic converter is an excellent upgrade for 2002, 2003, 2004, and 2005 Chevrolet Trailblazer and GMC Envoy 4.2L vehicles seeking improved engine performance, durability, and emissions compliance. With its high-quality materials, robust design, and compliance with emissions regulations, this catalytic converter delivers excellent value and peace of mind for vehicle owners.

Pros and Cons of Buying a Techme17 543942 Catalytic Converter for 2002-2005 Chevrolet Trailblazer and GMC Envoy 4.2L

The catalytic converter is a crucial emission control component in a vehicle. Replacing a faulty catalytic converter with a new or rebuilt one can help restore the vehicle's performance and comply with emission standards. One aftermarket catalytic converter that is often mentioned for late model Chevrolet Trailblazer and GMC Envoy with a 4.2L engine is the Techme17 543942. Here are the pros and cons of investing in this part to help you make an informed decision.

1. Durability: The Techme17 543942 catalytic converter is designed with high-quality materials and advanced manufacturing techniques to ensure long-lasting performance.

2. Fitment Assurance: This catalytic converter is specifically engineered for the 2002-2005 Chevrolet Trailblazer and GMC Envoy 4.2L models, ensuring a perfect fitment.

3. Lower Emissions: The Techme17 543942 catalytic converter is engineered to meet or exceed OEM emission standards, helping your vehicle comply with regulations and reduce harm to the environment.

4. Improved Engine Performance: Replacing a faulty catalytic converter can help restore lost power and torque, improving overall engine performance.

5. Backed by Warranty: Techme17 offers a warranty for their catalytic converters, providing peace of mind and protection against potential defects.

1. Cost: The cost of the Techme17 543942 catalytic converter may be higher than OEM or other aftermarket options, making it a bigger investment for some consumers.

2. Installation: Installing a new catalytic converter can be a challenging task for some DIYers due to the intricacy of the process. It may require specialized tools and skills, potentially resulting in additional labor costs.

3. Shipping Delay: Some customers have reported experiencing long shipping times when ordering the Techme17 543942 catalytic converter directly from the manufacturer or other online retailers.

4. Availability: Although the Techme17 543942 catalytic converter is advertised for various applications, availability might vary based on specific engine configuration and market conditions.

A faulty catalytic converter can cause various driveability issues and affect your vehicle's emissions. Though the Techme17 543942 catalytic converter may come with a slightly higher price tag, the advantages it offers in terms of durability, fitment assurance, lower emissions, improved engine performance, and a warranty make it a worthwhile investment for those seeking a long-term solution. Be sure to consider your budget, availability, and installation experience before making a decision.

For 2002-2005 Chevrolet Trailblazer and GMC Envoy 4.2L owners with a faulty catalytic converter, the Techme17 543942 catalytic converter is a reliable option that offers excellent long-term performance and fitment. If budget is a concern, it can be wise to compare prices from various dealers or consider other aftermarket options to ensure the best deal. Always make sure to confirm the compatibility with your vehicle's engine and model number before making a purchase.

part # 543942 price

• $65.46

specifications catalyticonvo:

• for models: Trailblazer, Envoy
• for makes: Chevrolet, Gmc
• brand: Techme17
• type: Catalytic Converter
• inlet connection type: Loose Flanges
• features: 100 Accuracy Of Fit/bolt-on Connection/easy To Replace
• manufacturer part number: 543942
• interchange part number: 55476/645878/50365/19100
• outlet connection type: 2 Bolt Welded Flange
• manufacturer warranty: 1 Year
• color: Silver
• fitment type: Direct Replacement
• body material: Stainless Steel
• universal fitment: No
• items included: Bolts/screw
• outlet type: 2-bolt Welded Flange
• year: 2002/2003/2004/2005
• fit 2: 2004-2006 Toyota Solara 2.4l
• fitment 2: 2002-2005 Chevrolet Trailblazer 4.2l
• fitment 3: 2002-2005 Gmc Envoy 4.2l
• fitment 4: 2003-2004 Isuzu Ascender 4.2l
• fitment 1: 2004-2005 Buick Rainier 4.2l
• engine: 4.2l L6
• fitment 5: 2002-2004 Oldsmobile Bravada 4.2l
• emissions: 48-state Legal
• series: 48-state Direct Fit
• substrate material: Ceramic
• product fit: Direct Fit
• restricted states: California/colorado/new York/maine
• fitment 6: 2005 Saab 9-7x 4.2l
• fit the emissions standard: Obd Iii

returns catalyticonvo:

• paid by: Seller
• time: 30 Days
• policy: Returns Accepted

payments catalyticonvo:

• other
• wallet: Apple-pay
• credit card: Visa

shipping catalyticonvo:

• service: Standard, Expedited
• type: Fixed
• cost: $0.00
• class: Standard, Expedited
• transit: 4-9 Days

offer catalyticonvo:

• best offers: True
• availability: In Stock
• started: December 26, 2024
• quantity: 10
• options: Ship-to-home
• sold: 0

general catalyticonvo:

• condition: New
• Car Truck Parts Accessories > Exhaust Emission Systems > Catalytic Converters

seller catalyticonvo:

• rating: 99.8%
• # reviews: 5233

Techme17 543942 Is Similar To:

• Techme17 614340 Left And Right Side Catalytic Converter Fit For 2015-2020 Ford F-150 V6 2.7l (41.5% similar) $143.68. (December 26th, 2024)
• Techme17 363600 For Ford F-53 V10 6.8l 2011-2016 Front/rear Catalytic Converter With Gasket (46% similar) $87.79. (May 22nd, 2025)
• Techme17 363456 Rh Catalytic Converter For Ford Crown Victoria Mercury Grand Marquis 4.6l 03-07 (36.6% similar) $75.74. (May 23rd, 2025)
• Techme17 503514 For 2001-2003 Ford Ranger 3.0l Front And Rear Catalytic Converters Set Direct Fit (54.9% similar) $141.47. (August 7th, 2025)
• Techme17 362934 Catalytic Converter For Chevrolet Gmc C1500 C2500 K1500 K2500 1996-1998 4.3/5.0l (34.4% similar) $134.28. (February 10th, 2026)
• Techme17 573354 Catalytic Converter For Ford Escape 1.5l&1.6l 2013 2014 2015 2016 2017 2018 2019 (35.4% similar) $71.15. (April 22nd, 2026)