Based on your search, "151310" appears to be a model number for a specific component rather than a generic file type.
A separate search indicates that 151310 can refer to a configurable entity ID for a GE Profile™ 24" Dishwasher Go to product viewer dialog for this item.
A search result identifies a "fuel tank 151310" for a Mercedes-Benz GLA Class (BM...) on eBay UK, which is likely the "useful piece" in question.
