Walker 16988 Catalytic Converter

Overview

Walker EPA 16988 is a specific-fit catalytic converter built for OBDII vehicles and engineered to meet EPA standards. It is a premium-grade exhaust replacement for Volkswagen applications that need a direct-fit solution with a single sensor port and pipe connection outlet.

Compatible With 2015-2021 Volkswagen GTI and 2019-2024 Volkswagen Jetta, this catalytic converter supports emissions system repair while maintaining the factory-style exhaust layout. Part number 16988 is also cross-referenced to 5QM254500K and 21-581 for the same application.

Key Features

• Specific-fit catalytic converter for direct replacement applications
• EPA-compliant design for OBDII vehicles
• Premium grade construction
• ECO II catalyst type with dual converter bodies
• Single inlet, single outlet, and one O2 sensor port
• Inlet gasket included; inlet and outlet hardware not included
• Oval and round body sections with pipe connection outlet

Product Details

Walker 16988 is part of the EPA line of direct-fit exhaust components, focused on emissions compliance and application-specific fitment. The converter uses an ECO II catalyst design and a two-body layout to match the exhaust flow requirements of the listed Volkswagen GTI and Volkswagen Jetta applications. With a 43-inch overall length and a V-band flange inlet, it is built for vehicles that require a precise exhaust connection and a single sensor port arrangement.

Common Repair Uses

• Failed catalytic converter efficiency codes
• Emissions test failure related to catalyst performance
• Exhaust restriction from a worn converter substrate
• Check engine light concerns tied to O2 sensor or catalyst faults
• Replacement after corrosion or internal breakdown

Installation Notes

Verify the vehicle’s OBDII configuration, engine application, and exhaust connection style before installation. This part uses a specific-fit design, so matching the inlet flange, outlet connection, sensor port count, and overall length is important for proper installation. Mounting hardware is not included.

Quality Assurance

Walker designs this converter to comply with EPA standards while delivering premium performance for import and domestic OBDII vehicles. The EPA product line focuses on emissions-compliant replacement parts for direct-fit exhaust service.