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Stainless Works catted long-tube headers for 2019–2020 Chevrolet Silverado and GMC Sierra 5.3L use CNC mandrel-bent 1-7/8" primaries into 3" slip-fit collectors and include high-flow catalytic converters with 3" lead pipes and a Y-pipe for OE connections. Built from 304 stainless steel with TIG welds and a 3/8" flange, the headers are American-made and engineered to increase flow and power while providing durable construction and direct-fit integration.
Stainless Works 2019+ Chevrolet Silverado 5.3L Catted Headers 1-7/8in Primaries 3in Leads Y-Pipe
