OEM Specification 4BG1 Diesel Engine Cooling Fan 11 Blades 1-13660345-0 8-97161599-0 for Isuzu Excavator Precision Engineered Replacement Describe: This OEM Specification 4BG1 Diesel Engine Cooling Fan is a precision-engineered replacement component manufactured to the exact dimensional and material specifications of the original Isuzu factory part. Every fan blade is produced using the same injection molding process, PAG material grade, and quality control protocols employed