Walker 83390 Catalytic Converter with Integrated Exhaust Manifold - Front

Overview of Walker CalCat Catalytic Converter 83390

The Walker CalCat Catalytic Converter with Integrated Exhaust Manifold (part number 83390) is designed specifically for Nissan Altima models from 2007 to 2009. This catalytic converter meets California Air Resources Board (CARB) standards, ensuring compliance with emissions regulations while maintaining reliable exhaust performance.

• CARB certified with Executive Order Number D-182-63
• Constructed from durable stainless steel for corrosion resistance
• Ceramic substrate material for effective catalytic conversion
• Integrated exhaust manifold design for streamlined installation
• Compatible inlet and outlet flange types: 5 bolt welded flange inlet, 4 bolt welded flange outlet
• Overall length approximately 20.25 inches with a 4-inch converter body length
• Designed for Nissan Altima models from 2007 to 2009

Detailed Product Description

The Walker CalCat 83390 catalytic converter combines a catalytic converter and exhaust manifold into a single integrated unit. This design reduces installation complexity and potential leak points. The converter body is made from stainless steel, providing resistance to rust and corrosion, which is essential for long-term durability in exhaust system components. The ceramic substrate inside the converter body facilitates efficient conversion of harmful exhaust gases into less harmful emissions, helping your Nissan Altima meet strict environmental standards.

The inlet features a 5 bolt welded flange with an oval port shape, while the outlet uses a 4 bolt welded flange with a round port shape, ensuring a secure and precise fit within the exhaust system. The overall length of 20.25 inches and a 4-inch body length make this part compatible with the specified Nissan Altima models. This catalytic converter is designed for regular grade use and includes one inlet and one outlet port.

About the Walker CalCat Product Line

The CalCat line from Walker focuses on providing catalytic converters that meet or exceed CARB emissions standards. These converters are engineered for direct fitment and durability, making them suitable replacements for original equipment on vehicles requiring California-compliant parts. The CalCat 83390 is part of this line, offering a reliable solution for Nissan Altima owners needing a CARB-certified catalytic converter with an integrated exhaust manifold.

Common Applications and Problem Resolution

• Replacement for a failing or clogged catalytic converter on Nissan Altima 2007-2009
• Restores proper exhaust flow and reduces harmful emissions
• Helps resolve check engine light issues related to catalytic converter efficiency
• Addresses exhaust leaks caused by damaged or cracked manifolds
• Ensures compliance with California emissions regulations

Installation Notes and Tips

When installing the Walker CalCat 83390 catalytic converter, ensure the mating flanges align correctly with the existing exhaust system. The 5 bolt welded flange inlet and 4 bolt welded flange outlet require proper torque specifications to prevent leaks. It is recommended to inspect surrounding exhaust components for wear or damage during installation. Professional installation is advised to maintain emissions compliance and system integrity.

Quality Assurance and Warranty

Walker catalytic converters, including the CalCat 83390, are manufactured to meet stringent quality standards and CARB certification requirements. This part is constructed from stainless steel and ceramic substrate materials designed for durability and long service life. Warranty coverage details should be confirmed with the product documentation or manufacturer.