Heavy duty & off-highway Diesel Fuel Injection

Since the introduction of legislation in the early 1990s, the industry has seen a significant reduction in emissions levels. In fact, it would take 15 heavy duty vehicles today to produce the same level of particulate emissions as just one vehicle did 20 years ago. At Delphi, we’ve been at the forefront of these improvements, delivering cleaner, greener and more fuel efficient commercial vehicles. We also provide the parts, tools and know-how to service these vehicles, right the first time, every time. Keeping them driving as good as new for life.
Parts diesel fuel systems

Technology Legacy Portfolio

Platform Era Pressure Emission Standard
DPA Rotary Pump 1950s 250 bar No emission regulation
DPS In‑line Pump 1960s Up to 1 000 bar No emission regulation
DPC 1980s 350 bar Euro 1
EPIC 1990s 350 bar Euro 2 / Euro 3
DP200 1990s 600 bar Tier 1
DP300 Common Rail / EUI 2008 850 bar Tier 3

Product Technology Portfolio

Delphi offers new injectors, re-manufactured injectors, pump assemblies and comprehensive spare‑part kits. By providing three choices – new, reman and repair – we can provide fleet managers with convenient service and maintenance at a very competitive cost.

F2 2,500 bar Heavy‑Duty System
The F2 platform includes three major OE variants: F2E, F2P and F2R (MDEG), serving leading OEMs including Volvo, Renault, DAF, PACCAR and Mercedes‑Benz.

  • F2E: 3 pumping injectors + 3 non‑pumping injectors. Applications: Volvo D11K 10.8L, D13K 12.8L; Renault DTi11 10.8L, DTi13 12.8L.
  • F2P: 2 EUP units + 6 smart injectors. Applications: DAF MX11 10.8L, MX13 12.9L.
  • F2R (MDEG): 6 injectors + 1 common‑rail pump. Applications: Mercedes‑Benz OM934, OM936 series engines.

 

MDEG CR Pump Repair Program (DFP5)

Delphi recently launched the MDEG DFP5 Repair Program for Euro 6 F2R Common Rail Systems.

  • More than 400 000 F2R pumps are in operation on the road. Injector repair solutions to be launched Q1 2026.
  • 29 total parts in scope, including 23 newly‑introduced components.
  • Purpose‑built Hartridge tooling and equipment boost workshop repair capability. Full DFP5 spare‑parts kit covers drive‑shaft nut, camshaft, O‑rings, high‑pressure head, transfer pump, IMV valve and other service items.

F3 System – DFI21 Next‑gen Heavy‑Duty Injection

  • Maximum system pressure up to 3 000 bar, lifetime beyond 1.6 million km.
  • High‑efficiency Ø1 mm valve technology, up to 9 injection events per cycle, injection separation below 0.2 ms, closed‑loop header technology to meet the world’s most stringent emission standards.
  • 800 000+ vehicles fitted with F3 systems in 2026; expected to grow to 2.3 million+ vehicles by 2031, representing strong aftermarket growth potential.

 

The Delphi Difference

  • 100 years of OE experience, supplier to the world’s top automakers
  • OE heritage and knowledge built into every aftermarket part
  • Comprehensive portfolio for a wide range of vehicles and model years
  • Streamlined SKUs for easy inventory management
  • Support through tools, tips and training
delphi-difference

Related product resources and downloads

Performing a DPF regeneration | Masters of Motion
1 min read

How to perform a DPF regeneration

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Diesel Fuel Systems How to Technicians 1 min read

Resource Highlights

DPF regeneration is the process of burning off accumulated soot from the diesel particulate filter (DPF) to prevent it from clogging and reducing the engine's performance. 

In this Masters of Motion video, our Delphi Expert shares tips on how to successfully perform DPF regeneration. Join us to discover:

  • How to check if DPF regeneration is needed
  • Why a manual regeneration might be required
  • How to perform a DPF regeneration

What is a DPF regeneration? 

A DPF regeneration is the process of cleaning and emptying the diesel particulate filter (DPF). 

Why does it need regeneration? 

Over time the DPF can become clogged with soot and debris, which can prevent it from being as effective at trapping harmful particles.

Why is a manual regeneration needed? 

The DPF can perform a self-regeneration, but sometimes this doesn’t happen, for example if the vehicle is only used for short journeys. If this is the case, manual regeneration is required.

Should I still perform a DPF regeneration even if one is not needed?

We do not recommend performing one if it’s not needed, as there is the possibility that some of the components become damaged during the process. 

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