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Walker 16998 Catalytic Converter - Left
| Brand | Walker 16998 |
|---|---|
| Position | Left |
| Universal Or Specific Fit | Specific |
| Grade Type | Premium |
| Body Shape | Round |
| Inlet Type | 4 bolt welded flange |
| Outlet Type | 2 bolt welded flange |
| Body Height | 4.000 |
| Body Length | 5.000 |
| Body Width | 4.000 |
| Heat Shield Attached | No |
| Inlet Quantity | 1 |
| Outlet Quantity | 1 |
| California Air Resources Board (CARB) Certified | No |
| Substrate Material | Ceramic |
| Converter Quantity | 1 |
| Inlet Mounting Hole Quantity | 1 |
| Inlet Gasket Included | Yes |
| Inlet Mounting Hardware Included | No |
| Outlet Mounting Hole Quantity | 1 |
| Outlet Gasket Included | Yes |
| Outlet Mounting Hardware Included | Yes |
| Overall Length | 17.000 |
| Sensor Port Count | 2 |
| New York Certified | No |
| Oxygen Sensor Location | Pre and post converter |
| Catalyst Type | Eco gm |
| Clamp Qty | None |
| Inlet Gasket | Yes |
| Inlet Gasket Qty | 1 |
| Inlet Hardware | No |
| Mounting Hardware Included | Gaskets & outlet |
| Product line | EPA |
| Fits | Buick and Chevrolet · 6 vehicles |
EPA-compliant design. Built for emissions-system service on OBDII vehicles.
Direct-fit construction. Welded flange connections simplify exhaust replacement.
Ceramic substrate. Supports catalyst function with a round body layout.
Cross-references AP Exhaust 644166, Gates 23278 and 19420303 for the same application. See all 3.
Overview
Walker EPA 16998 is a specific-fit catalytic converter built for OBDII vehicles and engineered to meet EPA standards. It uses a round ceramic substrate and direct-fit flange connections for a cleaner replacement on the exhaust system.
Fits 2018-2020 Buick Enclave, left. Fits 2018-2020 Chevrolet Traverse, left. This part cross-references AP Exhaust 644166 and Gates 23278 for the same application.
Key Features
- Specific-fit catalytic converter for direct replacement applications
- EPA-compliant design for 1996-and-newer OBDII vehicles
- Round body with ceramic substrate for exhaust flow and catalyst function
- 4-bolt welded inlet flange and 2-bolt welded outlet flange
- Includes inlet gasket, outlet gasket, and outlet mounting hardware
- Two oxygen sensor ports with pre- and post-converter locations
Product Details
Walker EPA 16998 is part of the Ultra Direct-Fit Catalytic Converter line, which focuses on application-specific exhaust replacement with EPA-standard compliance. The converter uses a round body, ceramic substrate, and welded flange connections to match the original exhaust layout on supported Buick Enclave and Chevrolet Traverse applications. The 17-inch overall length and dual sensor-port layout support proper exhaust and emissions system integration.
Common Repair Issues
- Failed catalytic converter efficiency codes
- Exhaust restriction from a deteriorated substrate
- Emissions test failure related to converter performance
- Damaged flange connections or leaking exhaust joints
- Faults involving pre- and post-converter oxygen sensor monitoring
Installation Notes
Verify fitment by year, make, model, and left-side application before installation. Confirm gasket surfaces, sensor-port condition, and flange alignment during replacement. This converter uses welded inlet and outlet flange connections and is supplied with outlet mounting hardware.
Quality Assurance
Walker EPA 16998 is built to comply with EPA standards and is intended for OBDII applications. The Ultra Direct-Fit line is positioned as a premium replacement option for emissions-system service.
| Year | Make | Model | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|
| 2020 | Buick | Enclave | 3.6L | V6 | Left | EPA |
| 2020 | Chevrolet | Traverse | 3.6L | V6 | Left | EPA |
| 2019 | Buick | Enclave | 3.6L | V6 | Left | EPA |
| 2019 | Chevrolet | Traverse | 3.6L | V6 | Left | EPA |
| 2018 | Buick | Enclave | 3.6L | V6 | Left | EPA |
| 2018 | Chevrolet | Traverse | 3.6L | V6 | Left | EPA |
| No rows match your filter. | ||||||