Davico 18453 Catalytic Converter - Rear

Exact-Fit Catalytic Converter for Altima

Davico Exact-Fit Catalytic Converter 18453 is built for direct replacement on the rear exhaust position of select 2007-2008 Nissan Altima models. It uses OE sample parts as the basis for fitment and function, with an emissions-reducing catalyst formulated for modern OBD II vehicles.

For drivers searching for a rear catalytic converter for 2007-2008 Nissan Altima, part number 18453 provides an application-specific exhaust solution with fixed-flange connections and gasket support.

Key Features

• Fits 2007-2008 Nissan Altima, rear
• Davico Exact-Fit Catalytic Converter line for OE-style replacement fitment
• 3-bolt fixed flange inlet on both ends for direct exhaust connection
• 2-bolt fixed flange outlet
• Gaskets included
• No O2 sensor provisions
• Overall length: 43 inches; width: 11.5 inches; height: 7 inches
• Boxed packaging for storage and handling

Product Details

The Davico Exact-Fit Catalytic Converter line is engineered from original equipment sample parts to match the vehicle’s exhaust layout and operating requirements. Part number 18453 is designed for the rear position on the Nissan Altima and uses a high-quality catalyst selected to reduce emissions on OBD II-equipped vehicles. This makes it a focused replacement for owners needing a rear catalytic converter for 2007-2008 Nissan Altima, 18453, without modifying the exhaust system.

This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

Common Issues This Part Can Address

• Failed rear catalytic converter efficiency codes
• Exhaust restriction from a worn or damaged converter
• Emissions test failure related to converter performance
• Exhaust leaks at flange connection points
• Noise or odor caused by a deteriorated converter assembly

Installation Notes

Verify the rear position and flange style before installation. This converter uses 3-bolt fixed flanges at the inlet and a 2-bolt fixed flange at the outlet, so the mating exhaust components must match the vehicle configuration. Gaskets are included, and the unit does not use O2 sensors.

Fitment is limited to 2007-2008 Nissan Altima, rear. This part is not legal for use in California and is illegal for installation in New York on vehicles equipped with California emission systems.

Quality Assurance

Davico builds the Exact-Fit Catalytic Converter line from OE sample parts and uses emissions-reducing catalyst materials selected for current OBD II vehicle demands. Part number 18453 is manufactured to support proper fit and exhaust function on the specified Nissan Altima applications.