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 and 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.
All warranty questions, claims or otherwise should be directed toward the manufacturer, Dart.
