Refiner upgrade requirements in ARC Raiders
The Refiner has 3 upgrade levels. Maxing it takes 8 different items. Every level is below with the exact amounts and the fastest place to find each part.
Refiner level 1
| Item | Amount | Where to find |
|---|---|---|
 Metal Parts | 60 | Mechanical, Industrial, Electrical, Technological loot |
 ARC Powercell | 5 | ARC loot |
Refiner level 2
| Item | Amount | Where to find |
|---|---|---|
 Toaster | 3 | Residential loot |
 ARC Motion Core | 5 | ARC loot |
 Fireball Burner | 8 | ARC loot |
Refiner level 3
| Item | Amount | Where to find |
|---|---|---|
 Motor | 3 | Mechanical loot |
 ARC Circuitry | 10 | ARC loot |
 Bombardier Cell | 6 | ARC loot |
Everything to max the Refiner
Keep these in your stash until the bench is maxed:
ARC to hunt for the Refiner
Bastion drops ARC Powercell, ARC Motion Core, ARC Circuitry
Bombardier drops Bombardier Cell
Fireball drops ARC Powercell, Fireball Burner
Hornet drops ARC Powercell
Leaper drops ARC Circuitry, ARC Motion Core, ARC Powercell
Matriarch drops ARC Circuitry
Pop drops ARC Powercell
Rocketeer drops ARC Powercell, ARC Motion Core, ARC Circuitry
Sentinel drops ARC Powercell, ARC Motion Core
Shredder drops ARC Powercell
Snitch drops ARC Powercell
Spotter drops ARC Powercell
Surveyor drops ARC Powercell, ARC Motion Core, ARC Circuitry
The Queen drops ARC Motion Core, ARC Circuitry
Wasp drops ARC Powercell
How to plan the Refiner upgrade
Work level by level: the first upgrade only needs common parts, the last needs ARC pieces and rarer salvage. Mark every item on this page as "keep" in your head, stop recycling anything on the list, and buy the cheap materials from traders instead of farming them. ARC parts and rare salvage are the usual bottleneck, so spend your raids on those and let traders cover the rest.
Other benches: Gear Bench, Explosives Station, Medical Lab, Scrappy, Stash, Utility Station, Gunsmith.