OE Quality
60-Day Returns

Walker 50585 Catalytic Converter - Rear
Walker EPA 50585 Catalytic Converter
Walker EPA 50585 is a direct-fit catalytic converter built for OBDII-equipped 2017-2020 Chevrolet Colorado and 2017-2020 GMC Canyon rear applications. It uses a specific-fit layout with stainless steel construction and welded flange connections for a straightforward exhaust replacement.
Key Features
- Direct-fit catalytic converter for rear exhaust placement
- Specific fit for 2017-2020 Chevrolet Colorado and GMC Canyon
- EPA-compliant design for 1996 and newer OBDII vehicles
- Oval stainless steel body for durability in exhaust service
- 3-bolt welded flange inlet and 2-bolt welded flange outlet
- Inlet outside diameter: 2.525 in.; outlet outside diameter: 3.000 in.
- Overall length: 56.490 in.; body dimensions: 8.500 in. long, 6.500 in. wide, 4.250 in. high
Product Details
Walker Ultra Direct-Fit Catalytic Converters are part of the EPA line and are engineered to meet emissions requirements while maintaining premium-grade construction. Part number 50585 is shaped for the rear exhaust position on the Chevrolet Colorado and GMC Canyon, with an oval stainless steel body and welded flange ends that match the listed application. This part cross-references 84308482 for the same application.
For buyers searching for a rear catalytic converter for 2017-2020 Chevrolet Colorado or 2017-2020 GMC Canyon, Walker 50585 provides a direct replacement format that follows the vehicle-specific exhaust layout. The EPA-focused design makes it a practical choice for emissions-related repair on these trucks.
What It Helps Address
- Failed or inefficient rear catalytic converter operation
- Exhaust restriction caused by a damaged converter substrate
- Check engine light concerns tied to catalyst efficiency codes
- Exhaust leaks at worn flange connections
- Replacement needs after corrosion or physical damage
Installation Notes
Verify rear-position fitment before ordering and match the inlet and outlet flange style to the existing exhaust system. Because mounting hardware is not included, reuse or source the required hardware separately as needed. Confirm clearance around the oval body and overall length during installation on the Colorado or Canyon platform.
Quality Assurance
Walker EPA catalytic converters are built for emissions compliance on applicable OBDII vehicles and use stainless steel construction for service durability. Part number 50585 is designed as a direct-fit replacement for the listed rear applications.
| Brand | Walker |
|---|---|
| Part Number | 50585 |
| Position | EPA, Rear |
| Inlet Outside Diameter | 2.525 |
| Outlet Outside Diameter | 3.000 |
| Mounting Hardware Included | No |
| Universal Or Specific Fit | Specific |
| Grade Type | Premium |
| Body Shape | Oval |
| Inlet Type | 3 bolt welded flange |
| Outlet Type | 2 bolt welded flange |
| Body Height | 4.250 |
| Body Length | 8.500 |
| Body Width | 6.500 |
| Inlet Quantity | 2 |
| Body Material | Stainless steel |
| Outlet Quantity | 1 |
| California Air Resources Board (CARB) Certified | No |
| Overall Length | 56.490 |
| New York Certified | No |
| Shape | Oval |
This part fits 8 vehicles. Search below:
| Year | Make | Model | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|
| 2020 | Chevrolet | Colorado | 3.6L | V6 | Rear | EPA |
| 2020 | GMC | Canyon | 3.6L | V6 | Rear | EPA |
| 2019 | Chevrolet | Colorado | 3.6L | V6 | Rear | EPA |
| 2019 | GMC | Canyon | 3.6L | V6 | Rear | EPA |
| 2018 | Chevrolet | Colorado | 3.6L | V6 | Rear | EPA |
| 2018 | GMC | Canyon | 3.6L | V6 | Rear | EPA |
| 2017 | Chevrolet | Colorado | 3.6L | V6 | Rear | EPA |
| 2017 | GMC | Canyon | 3.6L | V6 | Rear | 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.