: Manufacturer Motorcraft uses "JB-394" as a part number for V-belts. These are durable replacement belts designed for demanding engine drives, such as for the alternator, water pump, or power steering.
In public policy and regulatory contexts, "JB-394" often identifies specific forms or tracking codes: Jb 394zip
: Jules Borel & Co. uses "JB-394" as a product code prefix for Italian padded calf leather watch bands, available in various widths (e.g., 12mm, 14mm, 16mm) and colors. 2. Government and Legal Documentation : Manufacturer Motorcraft uses "JB-394" as a part