Description
Aeroflow GM LS Series 1-7/8″ Round Port Header Flanges (Pair)
Precision CNC-machined 304 stainless steel exhaust header flanges designed for custom manifold fabrication on GM LS V8 engines.
Product Overview
Constructed for custom exhaust fabrication and high-performance manifold builders, the Aeroflow Performance AF9551-1006 header flanges offer optimal durability and precise exhaust gas flow. CNC precision-machined from 9.5mm (3/8″) thick 304 stainless steel, these flanges ensure maximum resistance against thermal distortion, sealing fatigue, and exhaust gas leaks under high temperature and pressure race conditions.
Specifically engineered with 1-7/8″ (1.88″) round port dimensions, these flanges perfectly mate to GM LS cylinder heads, allowing seamless TIG welding for primary exhaust tubes. Supplied as a complete pair, they are the ideal foundation for building custom headers, turbo manifolds, and bespoke exhaust systems for track, drag, or high-power street applications.
Key Features
- ☑ Precision CNC-machined from heavy-duty 9.5mm (3/8″) 304 stainless steel.
- ☑ 1-7/8″ (1.88″ / 47.6mm) round port configuration for GM LS engine cylinder heads.
- ☑ Heavy flange thickness minimizes warping under extreme exhaust heat and vibration.
- ☑ Smooth CNC-profiled port edges for improved weldability and exhaust gas scavenge.
- ☑ Sold as a matched pair for left and right cylinder heads.
Technical Specifications
| Brand | Aeroflow Performance |
|---|---|
| Manufacturer Part Number | AF9551-1006 |
| Engine Compatibility | GM LS Series V8 Engines |
| Port Style | Round Port |
| Port Diameter | 1-7/8″ (1.88″ / 47.6mm) |
| Flange Thickness | 9.5mm (3/8″) |
| Material | 304 Stainless Steel |
| Quantity | Sold as a Pair (2 Flanges) |
What’s Included in the Box
- 2 x Aeroflow 304 Stainless Steel 1-7/8″ Round Port Header Flanges (Pair)
Aeroflow Performance products are built to strict motorsport standards, delivering reliable performance and excellent finish for custom fabricators. At JP Racing, we maintain full technical backing and stock genuine Aeroflow components ready for immediate dispatch across the UK.
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