01
Requirement
What is needed, in the buyer's own words. A replacement for a failed component, a missing belt at a specific seating position, or a repeat requirement across several vehicles are three different problems, and they are worth distinguishing before anything else is discussed.
02
Application
The vehicle and the position. Make, model, model year, body type and the exact seating position — driver, front passenger, a specific rear position. The same model can carry different arrangements at different positions.
03
Product
The component definition. Category, configuration, mounting arrangement, relevant dimensions and any markings visible on the existing part. This is the field photographs contribute to most.
04
Source
Where the defined product can be obtained, in what condition, in what quantity and on what terms. Options are assessed against the requirement; where the closest available option involves a compromise, that is stated rather than glossed over.
05
Documentation
What paperwork the transaction involves. International purchases typically involve commercial, shipping and regulatory documentation, and the applicable requirements vary by transaction and jurisdiction. Buyers should confirm what their own use case and location require.
06
Supply
Delivery of the component to the buyer, together with the product information available for it. Where the requirement is likely to repeat, the detail is recorded so the next enquiry begins from a known reference point.