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GM LS1 LS2 LS3 Header Bolts M8 x 1.25mm, 0.984" (25mm) UHL Black Finish 12 Pack
$66.80
SKU: AF37-1012
Reliable shipping
Flexible returns
GM LS1/LS2/LS3 Header Bolts, M8 x 1.25mm — 12‑Point, 0.984" (25mm) Under Head, Black Oxide, Pack of 12
Upgrade your GM LS exhaust header installation with purpose‑built bolts designed for aftermarket manifolds. These M8 x 1.25mm header bolts are engineered to replace shared factory bolts that may be damaged or incompatible with thicker headers, ensuring a secure, leak‑free seal on LS1/LS2/LS3 applications.
- Thread size: M8 x 1.25mm
- Overall length: 32mm
- Under‑head length: 0.984" (25mm)
- Head type: 12‑point, designed to suit a 10mm spanner
- Material: chrome moly 8740 for high strength
- Finish: black oxide for corrosion resistance and durability
- Head design: compact 12‑point head ideal for tight spaces on aftermarket header flanges
- Flange compatibility: suits 1/4" wide flange
- Pack size: 12 bolts (set of 12)
- Application: specifically for GM LS1/LS2/LS3 header installations
Why choose these header bolts? When installing aftermarket exhaust headers, factory manifold bolts often won’t fit or may have become damaged. This set provides a high‑strength, corrosion‑resistant fastener designed to endure the vibrations and heat of LS engine applications, while the 12‑point head gives you maximum maneuverability in cramped engine bays.