Cut exhaust emissions and replace a clogged or failed converter with the AP Exhaust Federal / EPA Direct-Fit Catalytic Converter (MPN 642278). It drops in as a direct-fit replacement for the 2004-2008 Pontiac Grand Prix, 2005-2009 Buick Allure, and 2005-2009 Buick LaCrosse, all with the V6-3.8L engine. A catalytic converter reduces engine-out pollutants as exhaust passes through the catalyst-coated substrate on the way to the rest of the exhaust system.
Mounting hardware is not included, so consult the vehicle service information for the correct fasteners and whether they may be reused. This is a Federal / EPA converter and is not CARB-certified, so it is not legal for sale or use on vehicles registered in California, New York, Colorado, Maine, or other states requiring CARB-compliant converters. Country of origin: United States.
What vehicles does this converter fit?
It's a direct-fit replacement for the 2004-2008 Pontiac Grand Prix, 2005-2009 Buick Allure, and 2005-2009 Buick LaCrosse, all with the V6-3.8L engine. Confirm your engine in the Buyer's Guide tab.
Is this converter legal in California?
No. It is a Federal / EPA converter and is not CARB-certified, so it is not legal for sale or use in California, New York, Colorado, Maine, or other states requiring CARB-compliant converters.
Does it come with gaskets or hardware?
Inlet and outlet gaskets are included. Mounting hardware is not included, so consult the vehicle service information for the correct fasteners and whether they may be reused.
What does a catalytic converter do?
It routes engine exhaust through a catalyst-coated substrate that reduces pollutants in the exhaust stream before the gases continue through the rest of the exhaust system.
What are signs my converter may need replacing?
Common signs include an illuminated check engine light (such as a P0420 code), a rattle from a broken internal substrate, or failing an emissions test. Diagnose the cause before replacing.
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.
