Davico 18303 Catalytic Converter - Rear

Exact-Fit Catalytic Converter

Davico Exact-Fit Catalytic Converter 18303 is built from original equipment sample parts to match fit and function on the vehicle. It uses an emissions-reducing catalyst formulated for OBDII applications and is configured with fixed 3-bolt inlet and 2-bolt outlet connections.

Compatible with 2003-2006 Nissan Sentra, rear. This part number, 18303, is a direct-fit exhaust replacement for buyers looking for a precise catalytic converter match on the Nissan Sentra.

• Exact-fit design based on OE sample parts for proper alignment.
• Emissions-reducing catalyst for OBDII vehicle requirements.
• Fixed 3-bolt inlet and 2-bolt outlet for a defined exhaust connection.
• Gaskets included for the listed application.

Detailed Product Overview

Davico 18303 is an Exact-Fit Catalytic Converter for the rear exhaust position on 2003-2006 Nissan Sentra models. The converter is engineered around original equipment sample parts, which helps maintain the intended fit and function of the exhaust system. The 51.50-inch overall length and fixed flange-style inlet and outlet support a direct replacement layout for the listed application. The part number 18303 is also useful when cross-checking exhaust system requirements for the Nissan Sentra.

This Exact-Fit Catalytic Converter line focuses on OE-style replacement geometry and catalyst performance for current OBDII vehicles. If your vehicle requires a rear catalytic converter with a 3-bolt fixed inlet, 2-bolt fixed outlet, and one O2 sensor location, Davico 18303 matches those specifications for the stated fitment.

Common Issues This Part Can Address

• Failed catalytic converter efficiency codes.
• Restricted exhaust flow from a worn converter.
• Exhaust leaks at the converter connection points.
• Check engine light concerns related to catalyst performance.

Installation Notes and Tips

Verify the vehicle’s emissions configuration before installation. This application is listed as not legal for use in California and illegal for installation in New York on vehicles equipped with California emission systems. Confirm the inlet and outlet flange style, O2 sensor count, and overall length before beginning the repair. Use Davico decarbonizing induction kit 1540ea when specified for the application.

Quality Assurance

Davico Exact-Fit Catalytic Converters are built using original equipment sample parts and emissions-reducing catalyst materials to support proper fit and function on OBDII vehicles.