HomeExhaust > Catalytic ConverterWalker 16668 Catalytic Converter
Part #: 16668

Walker 16668 Catalytic Converter

EPA
⚙️ 19 vehicles fit this part
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OE Direct Replacement — Bolt-on fit, no modifications needed
📦EPA
🚗Fitment: Nissan and Suzuki, Equator and Frontier
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Overview of Walker EPA Catalytic Converter 16668

The Walker EPA Catalytic Converter 16668 is designed for specific fitment on Nissan Frontier and Suzuki Equator models from 2005 to 2015. Engineered with a stainless steel body and a direct fit design, this catalytic converter ensures reliable exhaust emission control for compatible vehicles.

  • Specific fit for Nissan Frontier and Suzuki Equator (2005-2015)
  • Stainless steel 4" round body for durability
  • Direct fit installation with 3 bolt welded flange inlet
  • Rear converter position with one inlet and one outlet
  • Overall length of 35.125 inches with 8" body length and 4" body height and width

Walker EPA Product Line Details

The EPA product line by Walker focuses on catalytic converters that meet environmental standards while providing a direct fit solution for specific vehicle applications. This line is designed to replace original equipment with components that maintain emission control performance without requiring additional modifications.

Product Features and Specifications

This catalytic converter features a round stainless steel body measuring 4 inches in height, width, and diameter, with an 8-inch body length. It includes a single inlet and outlet, both utilizing a 3 bolt welded flange connection for secure attachment. The converter is positioned at the rear of the exhaust system and is intended for direct fit installation, eliminating the need for custom fabrication. The part number 16668 corresponds to this specific configuration, ensuring compatibility with Nissan Frontier and Suzuki Equator models within the specified year range.

Common Applications and Problem Resolution

  • Replacement for damaged or clogged catalytic converters on Nissan Frontier and Suzuki Equator
  • Restores proper exhaust emission control to meet regulatory requirements
  • Addresses exhaust leaks caused by worn or corroded converters
  • Improves engine performance affected by restricted exhaust flow
  • Helps reduce harmful emissions and maintain vehicle compliance

Installation Notes and Tips

Installation of the Walker EPA Catalytic Converter 16668 requires removal of the existing converter and mounting using the 3 bolt welded flange inlet connection. This part is designed for direct fit, so no modifications to the exhaust system are typically necessary. It is recommended to inspect surrounding exhaust components for wear or damage during installation to ensure a proper seal and function.

Quality Assurance and Warranty

Walker catalytic converters are manufactured with stainless steel bodies to resist corrosion and extend service life. While this product is not CARB certified, it meets EPA standards for emission control. Warranty information should be confirmed with the distributor or manufacturer, as it may vary by region and application.

BrandWalker
Part Number16668
PositionEPA
Mounting Hardware IncludedNo
Universal Or Specific FitSpecific
Grade TypeRegular
Body ShapeRound
Body Height4
Body Length8
Body Width4
Inlet Quantity1
Body MaterialStainless steel
Outlet Quantity1
California Air Resources Board (CARB) CertifiedNo
Overall Length35.125
Air TubeNo
Air Tube CountNo
Body Height4.000
Body Length8.000
Body MaterialStainless steel
Body Shape4" round
Body Width4.000
Converter PositionRear
Converter Quantity1
FitmentDirect fit
Inlet 1 Type3 bolt welded flange
Inlet Connection Type3 bolt welded flange
Inlet Count1
Inlet Type3 bolt welded flange
Max Year Covered2015
Min Year Covered2005
Most Popular Make / ModelNissan frontier
Most Popular Year2012

This part fits 19 vehicles. Search below:

YearMakeModelLitersCylindersPositionNotes
2019NissanFrontier2.5LL4N/AEPA
2018NissanFrontier2.5LL4N/AFits Fed. & Calif. Emission Models; Not legal for sale or use in California and other CARB-compliant states. Legal in New York and Maine on EPA Federal Emission Equipped Vehicles only. Consult the aftermarket converter regulations in your state for details.; Exhaust Gasket is Recommended; Additional part(s) needed to complete installation - 31576 and 31540; Ultra Direct Fit Type; EPA
2017NissanFrontier2.5LL4N/AFits Fed. & Calif. Emission Models; Not legal for sale or use in California and other CARB-compliant states. Legal in New York and Maine on EPA Federal Emission Equipped Vehicles only. Consult the aftermarket converter regulations in your state for details.; Exhaust Gasket is Recommended; Additional part(s) needed to complete installation - 31576 and 31540; Ultra Direct Fit Type; EPA
2016NissanFrontier2.5LL4N/AFits Fed. & Calif. Emission Models; Not legal for sale or use in California and other CARB-compliant states. Legal in New York and Maine on EPA Federal Emission Equipped Vehicles only. Consult the aftermarket converter regulations in your state for details.; Exhaust Gasket is Recommended; Additional part(s) needed to complete installation - 31576 and 31540; Ultra Direct Fit Type; EPA
2015NissanFrontier2.5LL4N/AFits Fed. & Calif. Emission Models; Not legal for sale or use in California and other CARB-compliant states. Legal in New York and Maine on EPA Federal Emission Equipped Vehicles only. Consult the aftermarket converter regulations in your state for details.; Exhaust Gasket is Recommended; Additional part(s) needed to complete installation - 31576 and 31540; Ultra Direct Fit Type; EPA
2014NissanFrontier2.5LL4N/AFits Fed. & Calif. Emission Models; Not legal for sale or use in California and other CARB-compliant states. Legal in New York and Maine on EPA Federal Emission Equipped Vehicles only. Consult the aftermarket converter regulations in your state for details.; Exhaust Gasket is Recommended; Additional part(s) needed to complete installation - 31576 and 31540; Ultra Direct Fit Type; EPA
2013NissanFrontier2.5LL4N/AFits Fed. & Calif. Emission Models; Not legal for sale or use in California and other CARB-compliant states. Legal in New York and Maine on EPA Federal Emission Equipped Vehicles only. Consult the aftermarket converter regulations in your state for details.; Exhaust Gasket is Recommended; Additional part(s) needed to complete installation - 31576 and 31540; Ultra Direct Fit Type; EPA
2012NissanFrontier2.5LL4N/AFits Fed. & Calif. Emission Models; Not legal for sale or use in California and other CARB-compliant states. Legal in New York and Maine on EPA Federal Emission Equipped Vehicles only. Consult the aftermarket converter regulations in your state for details.; Exhaust Gasket is Recommended; Additional part(s) needed to complete installation - 31576 and 31540; Ultra Direct Fit Type; EPA
2012SuzukiEquator2.5LL4N/AFits Fed. & Calif. Emission Models; Not legal for sale or use in California and other CARB-compliant states. Legal in New York and Maine on EPA Federal Emission Equipped Vehicles only. Consult the aftermarket converter regulations in your state for details.; Exhaust Gasket is Recommended; Additional part(s) needed to complete installation - 31576 and 31540; Ultra Direct Fit Type; EPA
2011NissanFrontier2.5LL4N/AFits Fed. & Calif. Emission Models; Not legal for sale or use in California and other CARB-compliant states. Legal in New York and Maine on EPA Federal Emission Equipped Vehicles only. Consult the aftermarket converter regulations in your state for details.; Exhaust Gasket is Recommended; Additional part(s) needed to complete installation - 31576 and 31540; Ultra Direct Fit Type; EPA
2011SuzukiEquator2.5LL4N/AFits Fed. & Calif. Emission Models; Not legal for sale or use in California and other CARB-compliant states. Legal in New York and Maine on EPA Federal Emission Equipped Vehicles only. Consult the aftermarket converter regulations in your state for details.; Exhaust Gasket is Recommended; Additional part(s) needed to complete installation - 31576 and 31540; Ultra Direct Fit Type; EPA
2010NissanFrontier2.5LL4N/AFits Fed. & Calif. Emission Models; Not legal for sale or use in California and other CARB-compliant states. Legal in New York and Maine on EPA Federal Emission Equipped Vehicles only. Consult the aftermarket converter regulations in your state for details.; Exhaust Gasket is Recommended; Additional part(s) needed to complete installation - 31576 and 31540; Ultra Direct Fit Type; EPA
2010SuzukiEquator2.5LL4N/AFits Fed. & Calif. Emission Models; Not legal for sale or use in California and other CARB-compliant states. Legal in New York and Maine on EPA Federal Emission Equipped Vehicles only. Consult the aftermarket converter regulations in your state for details.; Exhaust Gasket is Recommended; Additional part(s) needed to complete installation - 31576 and 31540; Ultra Direct Fit Type; EPA
2009NissanFrontier2.5LL4N/AFits Fed. & Calif. Emission Models; Not legal for sale or use in California and other CARB-compliant states. Legal in New York and Maine on EPA Federal Emission Equipped Vehicles only. Consult the aftermarket converter regulations in your state for details.; Exhaust Gasket is Recommended; Additional part(s) needed to complete installation - 31576 and 31540; Ultra Direct Fit Type; EPA
2009SuzukiEquator2.5LL4N/AFits Fed. & Calif. Emission Models; Not legal for sale or use in California and other CARB-compliant states. Legal in New York and Maine on EPA Federal Emission Equipped Vehicles only. Consult the aftermarket converter regulations in your state for details.; Exhaust Gasket is Recommended; Additional part(s) needed to complete installation - 31576 and 31540; Ultra Direct Fit Type; EPA
2008NissanFrontier2.5LL4N/AFits Fed. & Calif. Emission Models; Not legal for sale or use in California and other CARB-compliant states. Legal in New York and Maine on EPA Federal Emission Equipped Vehicles only. Consult the aftermarket converter regulations in your state for details.; Exhaust Gasket is Recommended; Additional part(s) needed to complete installation - 31576 and 31540; Ultra Direct Fit Type; EPA
2007NissanFrontier2.5LL4N/AFits Fed. & Calif. Emission Models; Not legal for sale or use in California and other CARB-compliant states. Legal in New York and Maine on EPA Federal Emission Equipped Vehicles only. Consult the aftermarket converter regulations in your state for details.; Exhaust Gasket is Recommended; Additional part(s) needed to complete installation - 31576 and 31540; Ultra Direct Fit Type; EPA
2006NissanFrontier2.5LL4N/AFits Fed. & Calif. Emission Models; Not legal for sale or use in California and other CARB-compliant states. Legal in New York and Maine on EPA Federal Emission Equipped Vehicles only. Consult the aftermarket converter regulations in your state for details.; Exhaust Gasket is Recommended; Additional part(s) needed to complete installation - 31576 and 31540; Ultra Direct Fit Type; EPA
2005NissanFrontier2.5LL4N/AFits Fed. & Calif. Emission Models; Not legal for sale or use in California and other CARB-compliant states. Legal in New York and Maine on EPA Federal Emission Equipped Vehicles only. Consult the aftermarket converter regulations in your state for details.; Exhaust Gasket is Recommended; Additional part(s) needed to complete installation - 31576 and 31540; Ultra Direct Fit Type; EPA

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

This part directly replaces or is cross-referenced with the following part numbers:

51602644135

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.