Factory Connect Catted: 2007-13 Chevy Silverado / GMC Sierra Truck Headers from Stainless Works - Increase performance and improve sound with our Silverado headers. These headers are designed to fit the factory connection point behind the factory catalytic converter. System includes Y-pipe and features 1-7/8" diameter primary tubes and 3" diameter lead pipes. Made from 304 stainless steel and TIG welded, these headers are constructed with 3/8" thick flanges and come with 3" diameter slip fit collectors with merge spikes. Designed to fit Chevy/GMC 1500 2WD/4WD 5.3L Double Cab with Standard Box or Crew Cab with either Short Box or Standard Box. Stainless Works headers are backed by a limited lifetime guarantee on material and workmanship and are made in the USA.. 2007-13 Chevy Silverado / GMC Sierra Headers, Fits factory connection point in front of OEM cat. Stainless Works headers are made in the USA and backed by a limited lifetime guarantee on material and workmanship.. Stainless Works, Chevy Silverado Headers, GMC Sierra Headers, Silverado 5.3L Headers, Sierra 5.3L Headers, 1/2 ton truck headers, half ton truck headers,. Stainless Works 2007-13 Chevy Silverado/GMC Sierra Headers 1-7/8in Primaries High-Flow Cats Y-Pipe. 2007 thru 2013 Chevy Silverado 1/2 Ton 5.3L and 2007 thru 2013 GMC Sierra 1/2 Ton 5.3L. Stainless Works Chevy Silverado / GMC Sierra 1/2 Ton Truck Headers. Stainless Works Headers 1-7/8" With Catted Leads Factory Connect. Stainless Works 2007-13 Chevy/GMC Catted. Exhaust Header Pipe Kit. Exhaust System. Header Kit

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