Briggs & Statton Lawn & Garden Equipment Engine 104M05-0107-F1 Genuine OEM. This is a Genuine OEM part. This engine (part number 104M05-0107-F1) is for lawn and garden equipment. Engine 104M05-0107-F1 is a complete replacement engine. Wear work gloves to protect your hands when installing this part.- Briggs & Statton Lawn & Garden Equipment Engine 104M05-0107-F1 Genuine OEM.