Description
Part Number: AF37-1012
Aeroflow GM LS Exhaust Header Bolt Set (M8 x 1.25mm, 25mm UHL)
High-strength 8740 chrome moly 12-point header bolts engineered specifically for GM LS series exhaust flange installations.
Key Features
- ☑ Premium 8740 chrome moly steel construction for extreme tensile strength and thermal stability
- ☑ Compact 12-point head design provides clearance in tight exhaust manifold environments (suits 10mm spanner)
- ☑ Durable black oxide finish offers corrosion resistance and sleek engine bay aesthetic
- ☑ M8 x 1.25mm thread pitch with 0.984″ (25mm) Under Head Length (UHL) ideal for aftermarket header flanges
- ☑ Pack of 12 bolts provides a complete hardware upgrade for GM LS V8 cylinder heads
Technical Specifications
| Brand | AeroFlow Performance |
|---|---|
| Manufacturer Part Number | AF37-1012 |
| Engine Fitment | GM LS Series (LS1, LS2, LS3, LS6, LS7, L98, etc.) |
| Thread Size | M8 x 1.25mm |
| Under Head Length (UHL) | 0.984″ (25mm) |
| Overall Length | 32mm |
| Head Style | Compact 12-Point (10mm Spanner) |
| Material | 8740 Chrome Moly Steel |
| Finish | Black Oxide |
| Quantity Supplied | Set of 12 Bolts |
What’s Included in the Box
- 12 x Aeroflow AF37-1012 M8 x 1.25mm 25mm UHL 12-Point Header Bolts
Engineered to withstand extreme temperature cycling and high exhaust pressures, the Aeroflow AF37-1012 bolt kit eliminates header leak risks common with original hardware on modified GM LS engines. Order directly from JP Racing for expert UK customer support, full product warranty, and rapid UK delivery.
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