Sunnen LBA-367A Line Bore Adapter For Engine Blocks

The Sunnen LBA-367A Line Bore Adapter for Engine Blocks is a precision Sunnen accessory that enables line bore work on automotive engine blocks by interfacing with Sunnen line-boring systems. Designed to locate and support the bore axis during boring operations, the adapter helps maintain alignment and consistency of bore geometry. Built for durability within Sunnen’s engine-building tooling ecosystem, the LBA-367A is intended for professional machine shops performing engine-block line bore tasks. As part of Sunnen's modular engine-building tooling, it pairs with compatible mandrels and fixtures to support line bore operations. By delivering stable bore alignment, the LBA-367A helps ensure consistent bore sizing and bearing seating when refurbishment is performed.