AP Exhaust 641290 Catalytic Converter with Integrated Exhaust Manifold - Front Right or Rear

OE-Style Catalytic Converter Manifold

AP Exhaust 641290 is a Federal / EPA direct-fit catalytic converter with integrated exhaust manifold built for 2004-2006 Toyota Sienna applications. It combines a stainless steel body, ceramic substrate, and OE-dimension fitment to support proper exhaust flow and emissions control on the rear and front right positions.

Key Features

• Federal / EPA direct-fit manifold design for exact-fit replacement
• Stainless steel body for corrosion resistance
• Ceramic substrate material for efficient catalyst performance
• 6-bolt welded flange inlet and 2-bolt welded flange outlet
• 1 O2 sensor port for sensor integration
• Inlet gasket and outlet gasket included
• Overall length: 17 inches

Fitment Details

Fits 2004-2006 Toyota Sienna, rear. Fits 2004-2006 Toyota Sienna, front right, firewall side. AP Exhaust 641290 is listed for Toyota Sienna models with Federal and California emissions on the front right application; not for sale or use on vehicles licensed in CA, CO, ME, and NY.

AP Exhaust uses automated workstations, spinner welding equipment, and high-speed production lines to build converters to OE dimensions and fitment. The ARISTO substrate chemistry is engineered for efficient loading and cost control while supporting converter efficiency. This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

Common Repair Symptoms

• Check engine light related to catalyst efficiency or exhaust flow
• Exhaust leaks at the manifold or flange connection
• Failed emissions inspection due to converter performance
• Rattling or damaged catalytic converter substrate
• Restricted exhaust flow affecting drivability

Installation Notes

Verify the vehicle position, emissions configuration, and state restrictions before installation. Use the correct gasket sealing surfaces and confirm O2 sensor port alignment during replacement. Because this is a direct-fit manifold assembly, compare the existing flange style and overall layout to the original unit before installation.

Quality Assurance

AP Exhaust builds this converter to OE dimensions using controlled manufacturing processes for consistent fitment and repeatable assembly quality.