Oil Cooler Sandwich Adapter 13/16-1

The Oil Cooler Sandwich Adapter 13/16-1 is a precision-engineered component designed for serious engine builders and mechanics working with GM LS-series powerplants. This adapter serves as the critical junction between your engine block and remote oil cooler system, allowing you to manage oil temperature under high-performance driving conditions without sacrificing engine bay real estate. Whether you're building a street rod, a track-focused muscle car, or upgrading a late-model Corvette or Camaro, this sandwich-style adapter is essential for maintaining optimal oil viscosity and preventing thermal degradation in turbocharged or supercharged applications.

Constructed from black anodized aluminum, the Oil Cooler Sandwich Adapter 13/16-1 features a robust 2-5/8 inch O-ring seal to prevent leaks under sustained boost or high-RPM operation. The adapter integrates dual 10 AN female ports for inlet and outlet lines, allowing seamless integration with braided stainless steel hose or hard-line fuel/oil system configurations. The 13/16-inch center thread design matches OEM GM LS block specifications, ensuring a tight, vibration-resistant fit without requiring modification to your engine or cooling circuit—critical when you're running tight tolerances in a modern performance build.

This adapter is ideal for LS engine swaps, turbocharged LS conversions, and supercharged applications where factory cooling capacity falls short. Installation is straightforward: thread the center stud into your block, secure the sandwich layers with a single bolt, and connect your cooler lines to the 10 AN ports. The compact footprint (3.95 x 2.85 x 5.1 inches) minimizes interference with headers, intake manifolds, and ancillary brackets—a practical advantage in tight engine bays. Compatible with all LS variants including LS1, LS2, LS3, LS9, and LSA engines, this adapter is a must-have for any shop serious about thermal management in high-output builds.