MPL stands for?

• A. Mechanical parts list
• B. Master parts list
• C. Master parts ledger
• D. Minimum part listing

Answer: (B)

In maintenance and parts management, MPL is the Master Parts List. It’s the authoritative catalog that lists every part approved for a product or asset, with part numbers, descriptions, and where each part fits in the assemblies. This single list is used to identify replacements, drive procurement, and keep spare parts data consistent across systems and teams. The other options don’t fit because they describe narrower or different ideas: a mechanical parts list would be limited to mechanical items, a master parts ledger would imply a financial record, and a minimum part listing suggests a pared-down subset rather than the official, comprehensive catalog.