87-91mm to 80mm Throttle Body Adapter

The Soler Performance SE8223-87-80 adapter is precision-engineered to facilitate the integration of larger throttle bodies onto GM's 5.3L V8 engines found in 3rd and 4th Generation GM Trucks and SUVs. This adapter specifically bridges the gap between an 87 mm or Soler Performance 91 mm throttle body and an 80 mm stock L83/L84 manifold or an aftermarket supercharger. Designed for optimal performance and longevity, the SE8223-87-80 boasts several key features. Its self-centering OEM screw pattern design ensures precise alignment of the throttle body, adapter, and manifold/supercharger bores, promoting concentricity. The adapter features an efficient tapered transition, meaning there are no abrupt steps within the airflow path, which minimizes pressure losses and maintains smooth airflow. This is a critical distinction from straight-bore adapters that can create turbulence and reduce manifold pressure. Durability is paramount, with the inclusion of a military/aerospace sealing gland design and a low-compression set silicone seal. This combination ensures robust sealing performance over time, preventing leaks and maintaining efficiency. The adapter also includes durable, corrosion-resistant hardware and is designed to clock the throttle body 10 degrees counter-clockwise (when viewed from the front) to avoid potential interference with the supercharger snout or blades, preventing a stuck blade condition. Soler Performance backs this adapter with a 1-year warranty.