Walker 16948 Catalytic Converter with Integrated Exhaust Manifold - Rear

Walker EPA Manifold Converter 16948

Walker EPA 16948 is a catalytic converter with an integrated exhaust manifold built for OBDII vehicles and engineered to meet EPA emissions requirements. It uses a premium stainless steel converter body with a steel manifold assembly for a direct-fit repair on select Lexus and Toyota applications.

For drivers searching for a Walker catalytic converter for Lexus RX350, RX450h, Highlander, or Sienna, this EPA-compliant manifold converter provides the correct inlet and outlet flange configuration for the listed rear or N/A positions. The Walker EPA line focuses on emissions compliance and application-specific fitment for import and domestic vehicles.

Key Features

• Part number 16948 catalytic converter with integrated exhaust manifold
• EPA-compliant design for 1996 and newer OBDII vehicles
• Premium-grade construction with stainless steel converter body
• Steel manifold assembly with round body shape
• 5-bolt welded flange inlet and 2-bolt welded flange outlet
• Overall length: 16.260 in.; converter body length: 5.000 in.
• Body dimensions: 4.000 in. height and 4.000 in. width
• Single inlet and single outlet configuration

Detailed Description

Walker 16948 is designed as a manifold-style catalytic converter for emissions system repair where the converter and exhaust manifold are integrated into one assembly. The round stainless steel converter body and welded flange connections support a secure exhaust seal, while the EPA-compliant design aligns with federal emissions requirements for the listed vehicles. This part cross-references Monroe Shocks & Struts (e.g., 171400P330) for the same application.

Vehicle coverage includes 2016-2022 Lexus RX350 rear, 2018-2022 Lexus RX350L rear, 2016-2022 Lexus RX450h rear, 2018-2022 Lexus RX450hL N/A, 2017-2020 Toyota Sienna rear, and 2017-2019 Toyota Highlander rear. If you need a Walker 16948 replacement for a Lexus RX350 catalytic converter or a Toyota Highlander rear exhaust manifold converter, this part is built around those exact fitments.

What It Helps Repair

• Check engine light concerns related to catalyst efficiency
• Failed emissions inspection caused by a worn or damaged converter
• Exhaust leaks at the manifold-to-pipe connection
• Cracked or corroded integrated manifold/converter assemblies
• Restricted exhaust flow from a deteriorated converter substrate

Installation Notes and Tips

Verify the vehicle year, model, and position before ordering, since this part is listed for rear and N/A applications only. Confirm flange style and exhaust routing against the original assembly, and inspect adjoining gaskets, sensors, and pipe condition during replacement. Mounting hardware is not included.

Quality Assurance

Walker Ultra EPA-Compliant Manifold Converters are built for emissions-focused replacement on import and domestic OBDII vehicles, with application-specific construction intended to meet EPA requirements. The Walker EPA product line is positioned for direct-fit exhaust repair where compliance and correct fitment are required.