ACDelco 12570326 Cylinder Head Locator Dowel Pin for GM LS/LT Engines

The ACDelco 12570326 is a genuine GM cylinder head locator dowel pin designed to ensure precise alignment during cylinder head installation on GM LS and LT series engines. This OE-quality locating pin positions the cylinder head accurately on the engine block, preventing misalignment that could lead to gasket failure or head damage during assembly.

Key Features:

• Genuine GM OE part ensures exact fit and proper alignment
• Compatible with Gen III, IV, and V LS/LT series engines including LS1, LS2, LS3, LS6, LQ4, LQ9, LM7, L76, L92, L99, and LT1
• Fits 4.8L, 5.3L, 5.7L, 6.0L, and 6.2L V8 engines
• Replaces rusted, worn, or missing dowel pins during engine assembly or rebuild
• Required component for proper cylinder head installation
• Designed, engineered, and tested to GM's rigorous OE standards

This locator pin is essential for anyone performing cylinder head removal or installation, engine rebuilds, or head gasket replacement on GM LS and LT engines. Sold individually—four pins are required per engine (two per cylinder head). Also known by GM part numbers 12558081 and BTR70326.