OE Quality
60-Day Returns

Walker 16648 Catalytic Converter - Rear
Overview of Walker EPA Catalytic Converter 16648
The Walker EPA Catalytic Converter 16648 is designed specifically for select Hyundai and Kia models, including the Forte, Forte Koup, Optima, Rondo, and Sonata. Engineered for direct fit installation, this catalytic converter ensures proper exhaust flow and emission control for vehicles up to the 2013 model year.
- Specific fit for Hyundai and Kia vehicles
- Constructed with durable stainless steel body
- Round body shape with dimensions: 14" length, 4" width, and 4" height
- Single inlet and outlet with 2.5" outside diameter 2-bolt welded flange connection
- Oxygen sensor located at midbed for accurate emissions monitoring
- Designed for underbody converter position
- Direct fit installation, no modifications required
Detailed Product Features and Specifications
This Walker EPA catalytic converter features a stainless steel round body measuring 14 inches in length, 4 inches in width, and 4 inches in height, providing a robust and corrosion-resistant construction. The inlet and outlet each have a single connection point, utilizing a 2-bolt welded flange with a 2.5-inch outside diameter, ensuring a secure and leak-free fit. The oxygen sensor is positioned at the midbed, allowing for precise emissions feedback to the vehicle’s engine control unit. This converter is designed for underbody installation and is a direct fit replacement part, compatible with specific Hyundai and Kia models manufactured up to 2013.
Walker EPA Product Line Information
The EPA product line by Walker focuses on meeting environmental regulations while providing reliable exhaust system components. This catalytic converter is part of the EPA line, which emphasizes compliance with emission standards and durability. While this particular model is not CARB certified, it is engineered to maintain proper exhaust flow and reduce harmful emissions for the specified vehicle applications.
Common Applications and Problem Resolution
- Replacement for damaged or clogged catalytic converters on Hyundai Forte, Forte Koup, Optima, Rondo, and Sonata
- Helps restore proper exhaust flow and reduce engine backpressure
- Addresses check engine light issues related to catalytic converter failure
- Improves emissions performance to meet regulatory requirements
- Eliminates rattling or exhaust leaks caused by converter damage
Installation Notes and Tips
This catalytic converter is designed for direct fit installation on compatible Hyundai and Kia models, requiring no modifications to the exhaust system. The 2-bolt welded flange inlet and outlet connections facilitate straightforward mounting. It is recommended to inspect the oxygen sensor and replace it if necessary during installation to ensure accurate emissions monitoring. Professional installation is advised to guarantee proper fitment and sealing.
Quality Assurance and Warranty
Walker manufactures this catalytic converter with stainless steel materials to resist corrosion and withstand high temperatures. While specific warranty details are not provided, Walker products typically meet industry standards for durability and performance. This part is engineered to provide reliable service life when installed on the correct vehicle applications.
| Brand | Walker |
| Part Number | 16648 |
| Position | EPA, Rear |
| Mounting Hardware Included | No |
| Universal Or Specific Fit | Specific |
| Grade Type | Regular |
| Body Shape | Round |
| Body Height | 4 |
| Body Length | 14 |
| Body Width | 4 |
| Inlet Quantity | 1 |
| Body Material | Stainless steel |
| Outlet Quantity | 1 |
| California Air Resources Board (CARB) Certified | No |
| Overall Length | 17 |
| Oxygen Sensor Location | Midbed |
| Air Tube | No |
| Air Tube Count | No |
| Body Height | 4.000 |
| Body Length | 14.000 |
| Body Material | Stainless steel |
| Body Shape | Round |
| Body Width | 4.000 |
| Converter Position | Underbody |
| Converter Quantity | 1 |
| Fitment | Direct fit |
| Inlet 1 Type | 2 bolt welded flange |
| Inlet Connection Type | 2 bolt welded flange |
| Inlet Count | 1 |
| Inlet Diameter 1 | 2.500 |
| Inlet Diameter Designation | Outside diameter |
| Inlet Type | 2 bolt welded flange |
| Max Year Covered | 2013 |
This part fits 22 vehicles. Search below:
| Year | Make | Model | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|
| 2013 | Kia | Forte | 2.0L | L4 | Rear | with Federal Emission System; 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 - 31640 and 31537; Ultra Direct Fit Type; EPA |
| 2013 | Kia | Forte | 2.4L | L4 | N/A | with Federal Emission System; 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 - 31640 and 31537; Ultra Direct Fit Type; EPA |
| 2013 | Kia | Forte Koup | 2.4L | L4 | N/A | with Federal Emission System; 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 - 31640 and 31537; Ultra Direct Fit Type; EPA |
| 2013 | Kia | Forte Koup | 2.0L | L4 | N/A | with Federal Emission System; 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 - 31640 and 31537; Ultra Direct Fit Type; EPA |
| 2012 | Kia | Forte | 2.0L | L4 | Rear | with Federal Emission System; 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 - 31640 and 31537; Ultra Direct Fit Type; EPA |
| 2012 | Kia | Forte | 2.4L | L4 | N/A | with Federal Emission System; 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 - 31640 and 31537; Ultra Direct Fit Type; EPA |
| 2012 | Kia | Forte Koup | 2.4L | L4 | N/A | with Federal Emission System; 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 - 31640 and 31537; Ultra Direct Fit Type; EPA |
| 2012 | Kia | Forte Koup | 2.0L | L4 | N/A | with Federal Emission System; 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 - 31640 and 31537; Ultra Direct Fit Type; EPA |
| 2011 | Kia | Forte | 2.0L | L4 | Rear | with Federal Emission System; 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 - 31640 and 31537; Ultra Direct Fit Type; EPA |
| 2011 | Kia | Forte | 2.4L | L4 | N/A | with Federal Emission System; 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 - 31640 and 31537; Ultra Direct Fit Type; EPA |
| 2011 | Kia | Forte Koup | 2.4L | L4 | N/A | with Federal Emission System; 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 - 31640 and 31537; Ultra Direct Fit Type; EPA |
| 2011 | Kia | Forte Koup | 2.0L | L4 | N/A | with Federal Emission System; 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 - 31640 and 31537; Ultra Direct Fit Type; EPA |
| 2010 | Hyundai | Sonata | 2.4L | L4 | N/A | with Federal Emission System; 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 - 31640 and 31537; Ultra Direct Fit Type; EPA |
| 2010 | Kia | Forte | 2.0L | L4 | Rear | with Federal Emission System; 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 - 31640 and 31537; Ultra Direct Fit Type; EPA |
| 2010 | Kia | Forte | 2.4L | L4 | N/A | with Federal Emission System; 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 - 31640 and 31537; Ultra Direct Fit Type; EPA |
| 2010 | Kia | Forte Koup | 2.4L | L4 | N/A | with Federal Emission System; 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 - 31640 and 31537; Ultra Direct Fit Type; EPA |
| 2010 | Kia | Forte Koup | 2.0L | L4 | N/A | with Federal Emission System; 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 - 31640 and 31537; Ultra Direct Fit Type; EPA |
| 2010 | Kia | Optima | 2.4L | L4 | N/A | Fits 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 - 31640 and 31537; Ultra Direct Fit Type; EPA |
| 2010 | Kia | Rondo | 2.4L | L4 | N/A | Fits 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 - 31640 and 31537; Ultra Direct Fit Type; EPA |
| 2009 | Hyundai | Sonata | 2.4L | L4 | N/A | with Federal Emission System; 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 - 31640 and 31537; Ultra Direct Fit Type; EPA |
| 2009 | Kia | Optima | 2.4L | L4 | N/A | Fits 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 - 31640 and 31537; Ultra Direct Fit Type; EPA |
| 2009 | Kia | Rondo | 2.4L | L4 | N/A | Fits 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 - 31640 and 31537; 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:
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.