Pump Type | Mechanical Unit Injector (MUI) or Electronic Unit Pump (EUP) (depending on E7 variant) |
Injection Pressure | 1,600 – 2,500 psi (mechanical) / Up to 23,000 psi (electronic EUP) |
Actuation Method | Cam-driven (mechanical) or Solenoid-controlled (electronic) |
Material | Hardened steel plunger & alloy body for wear resistance |
Compatibility | Mack E7 engines (E7-350, E7-400, E7-460, etc.) |
Fuel System | Unit Pump (UP) or Electronic Unit Pump (EUP) system |
Lubrication | Engine oil-fed (for EUP systems) |
Weight | ~5–7 lbs (varies by model) |
Lifespan | 300,000–500,000 miles (with proper maintenance) |
Key Features | Individual cylinder control, high durability, easier servicing than common rail |