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2015-2021 Mustang GT 5.0L SW Headers 1-7/8" With Catted Leads Factory ConnectStainless Works Part Number: M15HCATDescription:2015-21 Mustang GT headers with 1-7/8" primary tubes, 3" diameter catted lead pipes that mate to the factory connection point. Tig welded 304 stainless steel headers with 3/8" thick flanges, 3" diameter slip fit collectors with merge spikes.This system replaces the factory manifolds, catalytic converters with a superior performing lifetime guaranteed bolt-on system.
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