Buy 85013611 - Genuine Volvo/Mack Fuel Injector Set D13 MP8 - wisentpartscenter.com

Description

The Genuine Volvo/Mack Fuel Injector Set contains six electronic unit injectors for Volvo D13H and Mack MP8 12.8L diesel engines. The Delphi E3.5 injection system uses electronically controlled injectors to deliver high-pressure fuel directly into each cylinder. This system controls fuel quantity and injection timing to maintain efficient combustion, smooth engine operation, and consistent power delivery.

Key Functions

- Fuel Delivery: Supplies high-pressure diesel fuel directly into each cylinder.
- Injection Control: Regulates fuel quantity and timing through electronic control.
- Fuel Atomization: Produces a precise spray pattern for efficient combustion.
- Engine Performance: Supports smooth idle, acceleration, and power delivery.
- Emissions Control: Helps maintain proper combustion and exhaust emissions performance.

Fitment & Specifications

- Brand: Volvo / Mack
- Part Type: Electronic Unit Injector Set
- Engine: Volvo D13H / Mack MP8
- Engine Displacement: 12.8L
- Fuel Injection System: Delphi E3.5
- Injector Type: Electronic Unit Injector (EUI)
- Quantity: 6 fuel injectors

Verify fitment with us before ordering to ensure the correct part for your application.

Purpose of the Part

The Volvo/Mack Fuel Injector Set delivers pressurized diesel fuel directly into the engine's six combustion chambers. Each electronic unit injector generates injection pressure through a mechanically driven pumping mechanism and electronically controls fuel delivery. Precise injection timing and fuel quantity help maintain proper combustion, engine power, fuel efficiency, and emissions performance.

Issue Symptoms / When to Replace

Worn or malfunctioning fuel injectors may cause:

- Hard starting or extended cranking.
- Rough idle, misfires, or uneven engine operation.
- Reduced power and poor acceleration.
- Excessive black or white exhaust smoke.
- Increased fuel consumption.
- Abnormal combustion noise.
- Fuel injection faults or cylinder imbalance.

Similar symptoms can result from fuel supply problems, worn injector sleeves, damaged wiring, or improper injector adjustment.

Brand Information

Volvo Trucks and Mack Trucks are part of Volvo Group and manufacture heavy-duty commercial vehicles and diesel powertrains. Their D13 and MP8 engines use Delphi electronic unit injector technology. Delphi specializes in diesel fuel injection systems, including the E3.5 injector family used in these applications.

Installation Notes

Before installing the Volvo/Mack Fuel Injector Set, inspect the injector sleeves and replace the required seals and mounting components. Flat-seal injector applications may require conversion to conical injector sleeves when installing updated injectors. Follow the Volvo/Mack injector adjustment and programming procedures, then check for fuel leaks and proper engine operation.

How to Identify an OEM Part

The Genuine Volvo/Mack Fuel Injector Set can be identified by the Volvo or Mack factory packaging and identification label. Individual Delphi E3.5 injectors have manufacturer identification markings and part numbers on the injector body. Verify these markings against the original injectors and confirm the complete six-pack kit number.

Why Buy 85143385 From Wisent Parts Center?

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  • 30-Day Returns

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Warranty & Return Information
Warranty Information

Wisent Parts offers a 1-year warranty on all parts from the date of delivery. This warranty covers orders placed directly through our website. If a part fails during this period, we’re here to help - whether it’s a replacement, repair, or refund. For full details, refer to the Warranty page.

Return Information

Wisent Parts accepts returns within 30 days of delivery. All returns are subject to a restocking fee. To qualify, parts must be unused and in their original condition. For full return instructions and restocking fee details, please refer to the Returns page.