- Part ID must be present, correct, and legible
- Unit must be complete and free of rust, corrosion, water, and fire damage
- Housing must be complete
- Circuit board must be original and undamaged; chip must be present; no acid burn (Mitsubishi Gold Case units must have original board)
- No counterfeit units (Tech 2000 GM units only)
- Plugs must be intact; pins must not be bent; housing must not be dented (50% deduction)
*Other quality standards may apply.