Parts quality grades, in plain language

Two shops quote the same repair at noticeably different prices, and both are telling the truth — because they are not selling the same part. Parts grade is the single biggest hidden variable in repair pricing, and the vocabulary is deliberately fuzzy. This guide fixes the vocabulary, so the next quote you read actually tells you something.

Original (OEM / genuine) parts are made to the manufacturer's specification — from the manufacturer itself or its authorized channel. They match the original part's fit, performance, and feature behavior exactly, and they cost the most. Original-refurbished parts start life as genuine parts — often a screen with cracked glass — and are rebuilt with new glass or components. The core technology is original, the renewal is not, and price sits between genuine and aftermarket. Quality depends heavily on who refurbished it.

Aftermarket is not one grade but a spectrum. Premium aftermarket parts are built to approximate the original specification and can be entirely respectable, particularly for batteries, keyboards, and standard laptop panels. Budget aftermarket parts compete on price alone: dimmer screens with weaker color, batteries with optimistic capacity labels, keyboards with a different key feel. The visible tell is rarely the part on day one — it is the warranty claim in month four, which is why the warranty a shop attaches to a grade tells you what the shop itself believes about it.

None of this makes aftermarket the wrong choice: on an older device, a premium aftermarket part at a fair price is often the rational repair, and fitting a genuine flagship panel to a five-year-old phone can fail the repair-vs-replace test that a good aftermarket part passes. What is never acceptable is ambiguity. A quote should name the grade in words you can verify — for screens, whether features such as True Tone survive; for batteries, the stated capacity and whether health reporting works. If a shop will not name the grade, assume the grade is the one they would not name, and price the quote accordingly. Matched-grade comparison is the foundation of judging any quote fairly — it is step two of our quote check method for exactly that reason.