Walker 16535 Catalytic Converter - Rear

Walker EPA Direct-Fit Catalytic Converter

Walker EPA 16535 is a direct-fit catalytic converter built for specific 1999-2000 Toyota 4Runner rear applications with California Emission System equipment. It uses a stainless steel body, ceramic substrate, and welded 2-bolt flange connections for a direct replacement layout on EPA Federal Emission Equipped Vehicles where permitted.

The Walker EPA product line focuses on direct-fit exhaust replacement parts that align with EPA standards for import and domestic OBDII vehicles. This converter is part of that line and is engineered for a specific vehicle application rather than a universal install.

Key Features

• Direct-fit catalytic converter for specific rear fitment
• Fits 1999-2000 Toyota 4Runner, rear
• Stainless steel body with round housing
• Ceramic substrate material
• 2-bolt welded flange inlet and outlet connections
• Post-catalyst oxygen sensor location
• EPA-compliant design for applicable federal-emissions use
• Walker 16535 part number for catalog matching

Detailed Description

Walker 16535 is a replacement catalytic converter for the rear position on 1999-2000 Toyota 4Runner models with California Emission System equipment, where federal-emissions use is allowed. The direct-fit design follows the original exhaust layout with a 32-inch overall length, round stainless steel body, and welded flange connections to support a precise exhaust connection. The ceramic substrate is selected for emissions-system service in OBDII-era vehicles, and the post-catalyst oxygen sensor location matches the intended exhaust monitoring setup. This part cross-references Eastern Catalytic 40353 for the same application.

Common Problems This Part Can Address

• Failed catalytic converter emissions testing
• Check engine light related to catalyst efficiency
• Restricted exhaust flow from a worn converter
• Corrosion or damage to the original converter housing
• Exhaust leaks at the converter connection points

Installation Notes and Tips

Fits 1999-2000 Toyota 4Runner, rear. Exhaust gasket is recommended during installation. Additional parts are needed to complete installation: 31374 and 31384. Verify federal-emissions legality before purchase and installation; this part is not legal for sale or use in California and other CARB-compliant states. It is legal in New York and Maine on EPA Federal Emission Equipped Vehicles only. Confirm the vehicle’s emission label, flange style, and oxygen sensor placement before ordering Walker 16535.

Quality Assurance

Walker EPA catalytic converters are built to meet EPA standards for the listed application and are intended for direct-fit replacement on supported OBDII vehicles. Walker 16535 is cataloged for specific fitment and emissions-system use where permitted by law.