Walker 50585 Catalytic Converter - Rear

Brand Walker 50585
Position 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
Product line EPA
Fits Chevrolet and GMC · 8 vehicles

Direct-fit design. Specific fit for easier installation with no modifications needed.

Stainless steel body. Helps resist corrosion for long-term durability.

EPA-compliant. Built to meet EPA standards with premium performance.

Cross-references 84308482 for the same application. See all 1.

$378.43Free shipping
In stock · usually ships same day before 1pm CST
Step 1 — Confirm fitment
Free return shipping if it doesn't fit when you check fitment here first.

Select your vehicle to confirm fitment
Verify this part fits before purchasing β€” free returns if it doesn't
Step 2 — Quantity
Order total $378.43
Free shipping to the continental U.S.
Free returns within 60 days if it doesn't fit when fitment is verified.

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.

This part fits 8 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelLitersCylindersPositionNotes
2020ChevroletColorado3.6LV6RearEPA
2020GMCCanyon3.6LV6RearEPA
2019ChevroletColorado3.6LV6RearEPA
2019GMCCanyon3.6LV6RearEPA
2018ChevroletColorado3.6LV6RearEPA
2018GMCCanyon3.6LV6RearEPA
2017ChevroletColorado3.6LV6RearEPA
2017GMCCanyon3.6LV6RearEPA
Directly replaces or cross-references 1 part number
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
84308482