Your vehicle deserves only genuine OEM GM parts and accessories. To ensure reliability, purchase GM part # 15861399 3Way Catalytic Convertor Assembly (W/ Exhaust Manifold P. It is sometimes referred to as Buick Catalytic Converter. Our GM parts and accessories are expedited directly from authorized GM dealers strategically located all across the U.S. and are backed by the manufacturer's 12 month, 12,000 mile warranty. OEM GM parts are the best for restoring your vehicle to factory condition performance. This part fits specific Buick Allure, LaCrosse models.
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