Keep the exhaust on your Nissan Sentra flowing and treated with the AP Exhaust Federal/EPA Direct-Fit Catalytic Converter (MPN 643003). It installs in the rear converter position as a direct-fit replacement for the 2003-2006 Nissan Sentra [L4-1.8L], converting engine-out exhaust gases into less-harmful emissions as they pass through the ceramic catalyst substrate.
This is a Federal / EPA converter and is not CARB certified, so it is not intended for sale or use on vehicles registered in California or other states requiring CARB-compliant converters. Overall length is 50.5 in. Country of origin: United States.
What vehicles does this catalytic converter fit?
It is a direct-fit replacement for the 2003-2006 Nissan Sentra with the L4-1.8L engine. Check the Buyer's Guide tab to confirm fitment for your vehicle.
Is this converter legal in California?
No. This is a Federal / EPA Direct-Fit converter and is not CARB certified, so it is not intended for vehicles registered in California or other states requiring CARB-compliant converters.
What is included with the converter?
Inlet and outlet gaskets are included. No inlet or outlet mounting hardware is included, so consult the vehicle service information for the correct fasteners.
Where does this converter install?
It is cataloged for the rear converter position. It uses a 3-bolt welded inlet flange with a gasket stub and a 2-bolt welded outlet flange, plus one sensor port for the oxygen sensor.
What are signs my catalytic converter may need replacing?
Common signs include a P0420 code, a failed emissions test, a rattling broken substrate, sulfur odor, or reduced performance. Diagnose the underlying cause before replacing the converter.
WARNING: These products can expose you to chemicals including lead and phthalates, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
