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The MagnaFlow 51441 is a direct-fit manifold catalytic converter for the 2009-2014 Acura TSX and 2008-2012 Honda Accord four-cylinder. It replaces the stock manifold-and-cat assembly in one bolt-on piece, with stainless steel construction, 2.5-inch piping and bungs for both pre- and post-converter oxygen sensors. MagnaFlow builds it to OEM specs in California and backs it with a lifetime warranty, which is more coverage than most aftermarket converters offer. It suits owners facing a failed factory cat or a check engine light who want a stock-like fit rather than a universal weld-in unit.
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Owners of the listed TSX and Accord models generally report a clean bolt-on fit and a check engine light that stays off after installation. Complaints center on fitment confusion across model years and the labor involved in the manifold-style install.
This is a MagnaFlow OEM Grade manifold catalytic converter, part number 51441. It fits the 2009-2014 Acura TSX and the 2008-2012 Honda Accord. It is built to the original equipment specifications and is designed to keep the Check Engine Light off.
The converter and body are stainless steel. The inlet and outlet both bolt on. It is made in the USA at MagnaFlow's facility in Oceanside, California. MagnaFlow is ISO-9001 certified and backs its products with a lifetime warranty.
