Including your product’s SKU (Stock Keeping Unit), MPN (Manufacturer Part Number), and UPC (Universal Product Code) in all product pages is necessary for enhancing your PageRank for those codes.
The organic visitors you will get, will be at the conversion stage of the funnel with a very high conversion rate!

Not many visitors are searching on Google for SKU, MPN, or UPC. But the few that do, are very likely to purchase asap they find the product they are looking for.
This is also true for B2B, where it is common for purchasing agents to receive a list of SKUs of products, and they are expected to return a quote with prices and conditions. They will search the web for products matching those SKUs. As soon the quote gets approved by their client, they will come back to your website, and they will place an order. For products with frequent releases, it can be useful to list with the SKU of the current version, the SKU of the previous version to capture also searches based on obsolete codes.

Franco Folini lives and works in the eCommerce territory, a wild area between the Kingdom of Technology and the Kingdom of Marketing. He speaks fluently the language of both realms. For many years, Franco has been helping people bridge the divide and successfully collaborate.
If you want to find out more about Franco, visit his LinkedIn profile or send him an email folini[at]gmail.com