Mercury Parts Book - FOB4461-1. The Mercury Parts Book FOB4461-1 is the official factory-issued reference guide for identifying and ordering parts for your Mercury Marine engine. Designed for accuracy and ease of use, this comprehensive manual includes detailed part diagrams, exploded views, and OEM part numbers for quick, confident maintenance and repairs.. Key Features. Official Mercury Publication - Guaranteed to reflect factory specifications and updates. Detailed Exploded Diagrams - Visual breakdowns of components make part identification simple. OEM Part Number Listings - Easily locate the exact replacement parts for your engine. Clear Organization - Sections are grouped by system and assembly for fast reference. Durable Print Format - Built to withstand shop and onboard use. Compatibility. The Mercury Parts Book FOB4461-1 is specifically compiled for select Mercury engine models. Check your engine's serial number and model designation to confirm this manual applies to your unit.