Optimized Fan Positioning: 3-inch billet aluminum fan spacer helps correctly position the cooling fan for improved airflow through the radiator, Universal Pilot Fit: Includes adapter sleeve to work with 5/8" or 3/4" water pump pilot and 5/8" fan pilot sizes, Dual Bolt Pattern Design: Supports 1-3/4" and 2-5/32" center-to-center spacing to fit long and short style V8 water pumps, Quality Billet Construction: Precision-machined 6061-T6 aluminum provides lightweight strength and a clean, professional appearance, Complete Installation Kit: Supplied with mounting hardware and bushing to simplify installation on a wide range of engine setups.