LS Cast Stainless Steel Header Flanges - As-cast mill finish

***Qty 1 will get you 4 flanges, which is enough for both sides.Are you looking to build your own custom headers for your LS/LSX engine? Do you require a high strength, lightweight header flange? Do you want a unique design, one that sets the header apart from all others? The distinctive Ultimate Headers investment cast Stainless Steel flanges are available separately to meet your need for a custom-fabricated headers! Because of the attention paid to creating not only the unique appearance, but to the physical properties, Ultimate Headers flanges are lighter than flat stock materials (mild steel & SS), are exceptionally strong and deliver excellent clamping forces to the cylinder head! FEATURES:  Patented design (U.S. Patent US D700,554 S) Feature aerospace derived engineering techniques and metallurgical processes 316L Grade Stainless Steel delivers a very strong casting with heat and corrosion resistance Flange rib design gives exceptional strength and reduced weight A perfect match with Unique Headers 316L Stainless Steel cast tight radius header elbows Runs cooler due to increased surface area, thus further reducing tendency to warp Available in Mill, or Mirror Polished finishes Comes as a set of 4, covering both sides.  Hole size / primary size 1.875" aka 1 7/8"