Rocker Arm Bolt LS7 M8 x 1.25 x 35MM UHL

The Rocker Arm Bolt LS7 M8 x 1.25 x 35MM UHL is a precision fastener engineered for high-performance GM LS-series engine builds, particularly those running LS7 cylinder heads. This OEM-specification bolt is essential for anyone rebuilding or servicing LS powerplants, whether in street performance applications, track vehicles, or restorations. The bolt secures rocker arm assemblies to the cylinder head, a critical joint that must withstand valve train acceleration forces and thermal cycling under sustained engine operation.

Manufactured from hardened steel with black oxide finish, the Rocker Arm Bolt LS7 M8 x 1.25 x 35MM UHL meets OEM specifications for diameter, pitch, length, and head geometry. The M8 x 1.25 metric thread is precisely cut to factory tolerances, ensuring consistent clamping force when torqued to specification without stripping or galling. Black oxide coating provides corrosion resistance and reduces galling during installation—critical when working in tight cylinder head spaces where bolt accessibility is limited. At 0.04 lbs per unit, each bolt is individually replaceable, allowing technicians to address stripped fasteners or upgrade worn hardware without replacing entire assemblies.

Engine builders and technicians restoring LS-series platforms benefit most from OEM-correct fastening hardware. LS7 heads demand precise bolt specifications to ensure rocker arm geometry and preload remain within factory parameters—undersized or incorrect fasteners can result in valve train noise, unstable lifter behavior, or catastrophic hardware failure under boost or high RPM. This bolt is compatible with all LS7-equipped vehicles and may be used in LS1, LS2, LS3, and LSx platforms where rocker arm specifications align with factory design. For best results, always torque rocker arm bolts to manufacturer specifications and replace fasteners if threads show damage or corrosion. Order the quantity needed for your engine build—two bolts per rocker arm assembly, four assemblies standard per cylinder head.