Description

Genuine Volvo/Mack {pn} Fuel Injector Kit is a new six-injector set used on Volvo D13 and Mack MP8 common-rail diesel engines. This fuel system uses three pumping injectors and three non-pumping injectors working together to generate rail pressure and precisely meter fuel to all six cylinders. Delphi documentation confirms this 3+3 injector arrangement for the Volvo/Mack F2E common-rail system.

Purpose of the Part


The {pn} supplies the high-pressure fuel required by the D13/MP8 common-rail system. Three injectors incorporate the pumping function while three operate as non-pumping injectors, allowing the system to build rail pressure and precisely control fuel delivery without separate high-pressure pumping elements.

Issue Symptoms / When to Replace

Common signs that the {pn} injector kit may need inspection or replacement include:

  • Hard starting or extended cranking
  • Rough idle or uneven engine operation
  • Cylinder misfire or poor cylinder contribution
  • Reduced power or poor acceleration under load
  • Excessive black, white, or gray exhaust smoke
  • Poor fuel economy or increased fuel consumption
  • Fuel rail pressure that is slow to build or difficult to maintain
  • Injector balance or contribution test results outside specification
  • Fuel leakage, damaged injector connectors, or contamination in the fuel system

Fuel-pressure, injector, or cylinder-contribution fault codes may also be present depending on the engine calibration. These symptoms and codes do not prove an injector is bad by themselves. Fuel supply pressure, filters, contamination, wiring, connectors, rail-pressure components, and injector trim-code programming should be checked before replacing the injector set.

Brand Information

Volvo and Mack use Delphi fuel-injection technology in this common-rail injector system. Delphi manufactures the F2E pumping and non-pumping injectors and directly identifies 22378579 / 85022897 as the pumping-injector references and 22378580 / 85022899 as the non-pumping references.

Delphi specializes in OE diesel fuel-injection systems and tests these injector designs for fuel delivery, injection pressure, leakage, and timing using OE-developed equipment.

Installation Notes

Before installing the {85022897} injector kit, confirm the engine serial number, emissions generation, and original injector numbers to make sure the correct D13/MP8 injector set is being used. Keep the common-rail fuel system extremely clean during service and inspect the injector sleeves, sealing surfaces, electrical connectors, and fuel connections for damage or contamination. Make sure the three pumping injectors and three non-pumping injectors are installed in the correct positions for the engine configuration. After installation, enter each injector’s new trim code into the ECM for the correct cylinder position, then perform the required fuel-system prime, leak check, and engine diagnostic verification before returning the truck to service.


How to Identify an OEM Part

Genuine/OE {pn} injectors can be identified by the Delphi manufacturer identification and unique trim code on each injector, while the factory Volvo/Mack kit packaging carries the corresponding OE kit number. Delphi documentation confirms that each F2E injector receives its own trim code.

Why Buy 85022897 From Wisent Parts Center?

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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.