1 7/8" Square-Oval, GM Dual Bolt Pattern, Small Block Chevy, 18 Degree, 3/8" Thick, CNC Machined Header Flange. Available in mild steel or stainless steel.
**2 flanges are needed for a full set**
- Diameter:
- 1 7/8"
- Engine Make:
- GM/ Chevy
- Engine Family:
- Small Block Chevy
- Cylinder Head/ Engine:
- 18 Degree
- Port Shape:
- Square-Oval
- Thickness:
- 3/8"
- **Full Set:
- 2 Required