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3313GC5227M for Mack E7 Unit Pump
Key Information
Part Number: 3313GC5227M)
Engine Make: Volvo
Inspection Report: Yes
Warranty: 12 Months
Supply Ability: In stock
Payment Way: Paypal, Western Union, Visa, Mastercard, T/T
Details: One model in a neutral box or specific box required by clients.
Description
The Mack E7 unit pump (3313GC5227M) is a high-pressure fuel injection component designed for Mack’s E7 diesel engines. Here’s a brief overview of its structural characteristics and advantages:
Structural Characteristics:
Compact Design- Integrates the pump, plunger, and solenoid valve into a single unit, mounted directly on the engine block near each cylinder.
High-Pressure Plunger- Uses a precision-machined plunger to generate injection pressures (typically 1,600–2,500 psi in mechanical versions, higher in electronic variants).
Solenoid-Controlled (if electronic)- Some E7 pumps feature an electronic solenoid for precise timing and fuel metering (EUP system).
Hardened Materials- Built with wear-resistant alloys to withstand high-pressure diesel erosion.
Cam-Driven Operation- Activated by the engine’s camshaft (mechanical versions) or electronically controlled (in later EUP systems).
Advantages:
✔ Improved Fuel Efficiency- Delivers precise fuel metering per cylinder, optimizing combustion.
✔ Durability- Robust construction reduces failure rates compared to some common-rail components.
✔ Simplified Maintenance- Individual unit pumps can be replaced without removing the entire fuel system.
✔ Compatibility- Designed specifically for Mack E7 engines, ensuring reliable performance.
✔ Lower Emissions (in electronic versions)- Better control over injection timing helps meet older EPA standards.
Common Applications:
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Used in Mack trucks (CH, RD, MR models) with E7 engines (e.g., E7-350, E7-400, E7-460).
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Found in both mechanical unit injector (MUI) and electronic unit pump (EUP) systems.
Here's a summarized technical parameter table for the Mack E7 Unit Pump (3313GC5227M):
| Parameter | Specification |
|---|---|
| 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 |
