Walker 14757 Catalytic Converter - Center

EPA Direct-Fit Catalytic Converter

Walker EPA 14757 is a specific-fit catalytic converter built for OBDII vehicles and engineered to meet EPA standards. It uses a stainless steel body with a ceramic substrate and a direct-fit layout for straightforward replacement on the listed applications.

Key Features

• Specific-fit Walker Ultra Direct-Fit design for the listed applications
• EPA-compliant construction for OBDII vehicles
• Stainless steel body with ceramic substrate
• Round body shape with pipe connection outlet
• Four oxygen sensor ports for the required emissions layout
• Includes inlet gasket and clamp

Detailed Description

This Walker catalytic converter, part number 14757, is part of the EPA product line and is built for import and domestic OBDII vehicles from 1996 and newer. The design uses two converter bodies, a round stainless steel shell, and a ceramic substrate to support emissions system function while matching the direct-fit configuration of the original exhaust layout. It cross-references AP Exhaust 645145 for the same application.

Compatible With Chevrolet Silverado 1500, GMC Sierra 1500, Chevrolet Tahoe, GMC Yukon, and GMC Yukon XL in the center exhaust position. Fits 2019-2023 Chevrolet Silverado 1500, center. Fits 2021-2023 Chevrolet Tahoe, center. Fits 2019-2023 GMC Sierra 1500, center. Fits 2021-2023 GMC Yukon, center. Fits 2021-2023 GMC Yukon XL, center. The part number 14757 is a direct-fit option for these EPA-listed applications.

What It Helps Address

• Failed emissions testing related to catalyst efficiency
• Check engine lights tied to catalyst or oxygen sensor faults
• Restricted exhaust flow from a worn converter assembly
• Replacement needs after corrosion or internal substrate breakdown

Installation Notes

Verify the inlet style, sensor port count, and center-position fitment before installation. This converter uses a specific-fit layout with a 3-bolt loose flange on the left inlet and a 3-bolt welded flange on the right inlet. Mounting hardware is not included unless explicitly listed.

Quality Assurance

Walker EPA converters are built to meet EPA standards for the listed OBDII applications. Part number 14757 is engineered as a premium direct-fit replacement for the specified vehicles.