AP Exhaust 645450 Catalytic Converter

Direct-Fit Catalytic Converter for Jeep

AP Exhaust 645450 is a Federal / EPA direct-fit catalytic converter built for specific Jeep applications. It uses a stainless steel body, a ceramic substrate, and OE-style dimensions to support proper exhaust alignment on compatible Jeep Commander and Jeep Grand Cherokee models.

Key Features

• Federal / EPA direct-fit catalytic converter
• Stainless steel body for exhaust system durability
• Ceramic substrate material
• OE-style fitment and dimensions
• 2-bolt loose flange inlet with spherical flare
• 2-bolt welded flange outlet
• 2 O2 sensor ports and 4 O2 sensor ports listed for application-specific use
• Overall length: 38.25 in.

Detailed Description

AP Exhaust 645450 is engineered for direct replacement on select 2005-2007 Jeep Grand Cherokee and 2006-2007 Jeep Commander applications. The converter is built with automated manufacturing processes and spinner welding to maintain consistent dimensions and fitment. Its ceramic substrate and stainless steel body are selected to support exhaust flow and long-term service in a direct-fit replacement format. This part number, 645450, is a practical choice when replacing a worn or failed catalytic converter on a Jeep Commander or Jeep Grand Cherokee with the listed emissions configuration.

This part cross-references no listed interchange numbers in the provided data.

Vehicle Fitment

• Fits 2006-2007 Jeep Commander, N/A. Direct Fit; 3.7L engine; Federal and California emissions. Not for sale or use on vehicles licensed in CA, CO, ME, or NY.
• Fits 2006-2007 Jeep Commander, N/A. Direct Fit; Federal and California emissions. Not for sale or use on vehicles licensed in CA, CO, ME, or NY.
• Fits 2005-2006 Jeep Grand Cherokee, N/A. Direct Fit; Federal and California emissions. Not for sale or use on vehicles licensed in CA, CO, ME, or NY.
• Fits 2005-2006 Jeep Grand Cherokee, N/A. Direct Fit; Federal and California emissions. Not for sale or use on vehicles licensed in CA, CO, ME, or NY.

What It Helps Address

• Failed catalytic converter efficiency codes
• Exhaust restriction from a damaged substrate
• Emissions test failure on listed Jeep applications
• Exhaust leaks at the converter connection points
• Fitment issues from a non-OE-style replacement part

Installation Notes and Tips

Verify the vehicle’s emissions label and engine configuration before ordering. This converter uses a 2-bolt loose flange inlet with spherical flare and a 2-bolt welded flange outlet, so matching the existing exhaust connection style is important. O2 sensor port count varies by application listing, so confirm sensor placement on the vehicle before installation. Professional installation is recommended for proper sealing and alignment.

Quality Assurance

AP Exhaust uses advanced manufacturing methods, including automated workstations, spinner welding equipment, and high-speed production lines, to build converters to exact OE dimensions and fitment. The ARISTO substrate chemistry is designed to support efficient catalyst loading and consistent converter performance within the specified application range.