GM LS1 Headers: Block Hugger - 1-5/8

CNC laser cut flanges. Smooth formed collectors with 2-1/2" slip joint exhaust connection. O2 bungs installed in slip joint collector extension. Tig Welded. Standard finish. Stainless Works manufactures all of their headers in house. All tubes are CNC mandrel bent 16-gauge 304L Everlast stainless, and are tig welded to CNC laser machined flanges. Stainless Works Header Features: 100% 304 Stainless CNC Mandrel Bent Tig Welded Smooth formed collectors CNC laser machined flanges Lifetime Warranty 100% American Made in house!!!