Dowel Pin - Split Type GM LS Block to Cyl. Head

The Pioneer Dowel Pin – Split Type GM LS Block to Cylinder Head (MPN PG-525-100) is a precision alignment component designed for LS-series engine builders and enthusiasts engaged in cylinder head installation or gasket service. These dowel pins are essential for ensuring proper alignment between the engine block and cylinder head, which is critical for maintaining head gasket integrity and engine performance.

The split-type design of these dowel pins allows for easy installation and removal, minimizing the risk of damage to surrounding components. This innovative geometry accommodates thermal expansion while maintaining lateral rigidity, preventing head walk that can compromise gasket sealing under high performance conditions. Manufactured to OEM tolerances, these dowels ensure a precise fit for GM LS block to cylinder head applications.

Ideal for any LS engine teardown, whether for routine maintenance or complete overhauls, these Pioneer dowel pins restore OEM alignment standards. They are compatible with various LS engine variants, including LS1, LS2, LS3, LS6, LS7, LS9, and LT1, making them a versatile choice for engine builders.