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2011-2014 Mustang GT 5.0L SW Headers 1-7/8" With Catted Leads Factory ConnectStainless Works Part Number: M11HDRCATXDescription:2011-14 Mustang GT headers with 1-7/8" primary tubes, 3" X-Pipe, 3" dia catted lead pipes that mate to the factory connection point. Tig welded 304 SS headers with 3/8" thick flanges, 3" dia slip fit collectors with merge spikes. This system replaces the factory manifolds, catalytic converters, H-Pipe with a superior performing lifetime guaranteed bolt-on system.
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