Dorman 674-045 Catalytic Converter with Integrated Exhaust Manifold - Front

Dorman 674-045 Catalytic Converter Manifold

This Dorman catalytic converter with integrated exhaust manifold is built as a direct replacement for specific Buick applications. It combines the manifold and converter into one OE-style assembly for front-position exhaust service on select LaCrosse and Allure models.

Key Features

• Integrated exhaust manifold and catalytic converter design
• Stainless steel converter body for exhaust durability
• Flanged outlet for OE-style connection
• One inlet and one outlet configuration
• Two sensor ports for emissions system integration
• Includes inlet gasket, outlet gasket, bolts, and washers
• Natural finish with regular-grade construction

Detailed Description

Dorman 674-045 is a manifold converter engineered to match original equipment dimensions and mounting points on select vehicles. It is a front-position replacement for 2010 Buick LaCrosse, 2010 Buick Allure, and 2012-2016 Buick LaCrosse applications, including 2012-2016 Buick LaCrosse models noted as wo/PZEV California emissions. The stainless steel converter body, oval inlet port, flanged outlet, and integrated manifold layout support a direct-fit exhaust repair where the factory unit has failed or deteriorated. This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application. Part number 674-045 is intended for buyers searching for a catalytic converter with integrated exhaust manifold for Buick LaCrosse front exhaust service.

Common Repair Uses

• Cracked or leaking exhaust manifold assembly
• Restricted catalytic converter flow
• Exhaust odor or emissions-related fault conditions
• Broken flange or mounting interface at the front exhaust section
• Sensor-port related replacement needs on the manifold converter assembly

Installation Notes

Verify engine and emissions configuration before ordering, especially for 2012-2016 Buick LaCrosse applications with wo/PZEV California emissions notes. Confirm the front-position layout, inlet port shape, outlet style, and sensor port count against the original part. Use the included inlet gasket and outlet gasket during installation, and follow factory torque and sealing procedures to reduce exhaust leaks.

Quality Assurance

This Dorman replacement is precision-engineered to align with original equipment fit and function on the listed applications. The stainless steel construction and OE-style mounting design support a service-ready exhaust repair for compatible Buick LaCrosse and Buick Allure vehicles.