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Complete Guide to 16879 Catalytic Converter for Toyota Avalon, Camry & Lexus ES350 3.5L (2005-2017)

A P0420 or P0430 code on your 3.5L V6 usually means the catalytic converter can no longer clean the exhaust the way it should. The 16879 Catalytic Converter is a direct-fit replacement built for the Toyota Avalon, Camry, and Lexus ES350 with the 2GR-FE engine. It bolts into the factory location with no cutting or welding.

This guide walks you through fitment, specifications, the performance changes to expect, and the installation steps. Every number comes straight from the product specification, so you can match it against your vehicle before you order.

What the 16879 Replaces

The 16879 is engineered as a direct replacement for OE part 17140-0P020 on vehicles running the 3.5L V6 (2GR-FE) engine. Because it mirrors the factory layout, it installs without modifications — no exhaust fabrication, no custom brackets, no guesswork. You remove the failed converters, bolt this set in place, and reconnect the system.

Key features

• Direct-fit design — installs without modifications for exact fitment on Toyota and Lexus platforms.
• EPA compliant — meets EPA emissions standards and suits OBDII vehicles, so your car stays road legal.
• Complete 3-piece set — both front converters (Bank 1 and Bank 2) plus the Y-pipe merge section for a full exhaust restoration.
• Premium construction — stainless steel components and advanced ceramic catalyst substrates for durability and conversion efficiency.

Full specifications, current pricing, and availability are on the 16879 Catalytic Converter product page.

Fitment: Does It Match Your Vehicle?

Coverage depends on model, year, and above all the engine. This converter fits only the 3.5L V6 (2GR-FE). A Camry with the four-cylinder needs a different part, so verify your engine before checkout.

• Toyota Avalon: 2005-2019 models
• Toyota Camry: 2007-2017 models
• Lexus ES350: 2007-2018 models

That makes a 2010 Camry 3.5L a confirmed fit, and Avalon coverage runs the widest at fifteen model years. The ES350 range stretches from 2007 through 2018. Match your year and engine so the part arrives right the first time.

Check Fitment & Price

Technical Specifications

Everything on one screen, ready to compare against your build sheet:

Performance Benefits After the Swap

A worn converter restricts exhaust flow and trips efficiency codes. A fresh unit reverses that. Here is what changes when you install the 16879:

1. Restored engine performance. Optimal exhaust flow supports engine efficiency and power output.
2. Cleared check engine lights. Replacing failing converters resolves P0420 and P0430 diagnostic trouble codes and restores normal operation.
3. Better fuel economy. Reduced backpressure contributes to improved efficiency.
4. Lower emissions. The catalyst converts CO, HC, and NOx into less harmful substances so the vehicle meets emissions standards.
5. Quieter operation. It replaces the rattling, damaged converters that create excessive exhaust noise.

Installation Tips

Professional installation is recommended for the best result, but experienced DIYers can complete the job with basic tools. A shop typically needs 2-3 hours. DIY time runs longer depending on your experience level and the tools on hand.

Before you turn a single bolt:

• Let the exhaust system cool completely.
• Soak exhaust bolts and connections with penetrating oil.
• Replace gaskets and hardware as needed for proper sealing.
• Align everything before final tightening.
• Check for exhaust leaks after installation.

The set includes both front converters and the Y-pipe merge section. New gaskets and mounting hardware may need to be purchased separately — order them ahead so the job does not stall halfway through. For the complete 16879 Catalytic Converter product, including detailed specifications and purchasing options, visit the product page.

Related Parts and Guides for These Platforms

Converter replacement is often one repair in a longer ownership story. The Exhaust & Emission Systems collection gathers converters, valves, and sensors for the same Toyota and Lexus models, so you can plan the whole system in one place.

Want a second option for the same chassis? The Catalytic Converter for 2005-2018 Toyota Avalon, Camry & 2007-2017 Lexus ES350 covers an overlapping fitment range — compare the two to match your exact model year.

Evap parts and suspension guides

A converter fault is not the only reason these cars throw a light. For fuel-vapor problems, the Vapor Canister Vent Valve / Solenoid for Lexus ES350, IS300, Toyota Avalon & Camry targets the evap side of the emissions system — a common companion repair on the same vehicles.

And if your 2012-2017 Camry clunks over bumps while you are under it, the 2012-2017 Camry sway bar link replacement guide covers the symptoms, the install steps, and the OEM versus aftermarket trade-offs.

Questions Before You Order?

Send your model year and engine details and the team will help you verify the match before money changes hands. Three ways to reach us:

• Submit a request for quote (RFQ) for bulk or workshop pricing.
• Email support@koeep.com with your vehicle details.
• Message us on WhatsApp for the fastest reply.

Why Choose the 16879?

• Perfect fitment: direct replacement design, no modifications.
• Complete solution: all three sections for full system restoration.
• Compliance: meets EPA and emissions requirements, OBDII compatible.
• Performance restoration: returns the vehicle to factory-level emissions control and performance.
• Value: OEM-quality performance at a competitive price point.

Each unit goes through rigorous quality testing to meet or exceed OEM specifications, so reliability stays comparable to the factory component. That matters when the repair has to pass a state inspection.

Final Recommendations

For Avalon, Camry, and ES350 owners facing emissions repairs, the 16879 is a straightforward choice: direct-fit design, complete 3-piece coverage, and EPA compliance in one order. It works for professional mechanics and knowledgeable DIY enthusiasts alike.

Verify your model year and engine first — the 2GR-FE 3.5L V6 requirement is the detail that matters most. If exhaust work is new to you, professional installation is worth the cost; a proper seal is what keeps the system quiet and compliant.

Frequently Asked Questions