If you stock the wrong ten SKUs in your parts drawer, you will lose five jobs a week to "out of stock" — and four more to "wrong model". Here is the volume mix that pays back across the average repair shop, ranked by wholesale velocity across our buyer network.
The 2026 top 10
- iPhone 11 / 12 / 13 batteries — combined the single largest stock line by volume. Recycle-stock twice monthly.
- iPhone 11 / 12 charging port flex — second most-walked-in repair after screens and batteries
- iPhone 7 / 8 Plus screens — legacy fleet still huge in walk-in volume
- iPhone XR / 11 screens — the LCD aftermarket sweet spot
- iPhone XS Max rear camera modules — OIS failures cluster on this model
- iPhone X / XS loud speakers — pocket lint and water exposure
- iPhone 7 Plus / 8 Plus SIM trays — single shared SKU, high velocity
- iPhone 13 Pro rear cameras — Pro models still in heavy use, OIS failures common
- iPhone 11 front sensor flex — Face ID / selfie repair cluster
- iPhone X / XS batteries (matched BMS) — the older the model, the higher the swell rate
Margin profile by SKU
| Tier | Margins | Examples |
|---|---|---|
| High volume / mid margin | 30–50% retail markup | Screens, batteries, charging ports |
| Lower volume / higher margin | 60–90% markup | Camera modules, antennas, flex cables |
| High velocity / low margin | 15–30% markup | SIM trays, screws, gaskets |
| Reference parts | 100%+ markup | OEM pulls for picky customers |
Stocking strategy
Hold fast-mover SKUs at 2-week supply based on average tickets. Slow movers at "on-demand" level. For the volume tiers in row 1 of the chart, a 50-piece trial order is the minimum economically rational lot. Browse the full catalogue or jump straight to batteries, cameras, and charging ports for the top-3 mix.
FAQ
What shifts in 2027? Older-tier flagships (X, XS, XR) drop in volume; the iPhone 12 / 13 family is the new heavy-mix core. Plan your reorder calendar accordingly.
Best way to test a new supplier's "best sellers"? Order 10 pieces of three SKUs from this list, compare against your current supplier's same three SKUs on bench test.