AP Exhaust 642042 Catalytic Converter - Rear

AP Exhaust 642042 Catalytic Converter

AP Exhaust 642042 is a Federal / EPA direct-fit catalytic converter built for rear-position service on select Chevrolet Equinox, GMC Terrain, and Chevrolet Captiva Sport applications. It uses a stainless steel body, a ceramic substrate, and OE-style dimensions to support proper fitment and exhaust flow.

Built with AP Emissions Technologies manufacturing methods, this converter is produced to match factory dimensions for straightforward replacement on the listed vehicles. The 642042 is a practical choice when you need a rear catalytic converter for a 2010-2017 Chevrolet Equinox or 2010-2017 GMC Terrain with direct-fit installation.

Key Features

• Federal / EPA direct-fit catalytic converter
• Stainless steel body for exhaust system durability
• Ceramic substrate material
• 3-bolt welded flange inlet
• 2.25" ID pipe outlet
• Inlet gasket included; outlet gasket not required
• Outlet hardware included
• Overall length: 39 inches
• No O2 sensor ports

Detailed Description

Part number 642042 is engineered for rear exhaust replacement on the listed GM crossover applications. It is compatible with 2010-2017 Chevrolet Equinox rear, 2010-2017 GMC Terrain rear, and 2012-2015 Chevrolet Captiva Sport rear, with direct-fit construction that follows OE dimensions for easier alignment to the factory exhaust layout. This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

The stainless steel shell helps resist exhaust-system corrosion, while the ceramic substrate is selected for efficient catalyst loading and emissions control performance. AP Exhaust uses automated production equipment and spinner welding processes to maintain consistent fitment across the application range. Part number 642042 is also listed under interchange 20900543.

What This Part Helps Address

• Failed catalytic converter efficiency codes
• Exhaust restriction from a deteriorated converter core
• Rattling or damaged converter substrate
• Exhaust leaks at the rear converter connection
• Emissions-test failure related to converter performance

Installation Notes and Tips

• Verify vehicle emissions configuration before ordering; this part is listed for Federal and California emissions applications, with state-use restrictions noted for CA, CO, ME, and NY.
• Confirm rear-position placement and the 3-bolt welded flange inlet before installation.
• Inspect mating exhaust surfaces and replace worn seals or hardware as needed for proper sealing.
• Check the factory exhaust layout on 2012-2015 Chevrolet Captiva Sport models, as the OE system was a welded assembly and related parts may need replacement.

Quality Assurance

AP Exhaust manufactures this converter to OE dimensions using controlled production methods for consistent fitment and build quality. The design reflects AP Emissions Technologies’ focus on efficient substrate loading and repeatable manufacturing for direct-fit exhaust replacement.