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.

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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

Related product resources and downloads

1 min read

How to check the electrical status of a Common Rail injector

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Diesel Fuel Systems How to Technicians 1 min read

Resource Highlights

An electrical fault in a common rail injector can be one of the many reasons why the check engine light comes on in a car. A faulty CR injector would cause issues with the spray of fuel into the combustion chamber, or even stop it happening at all.

With this instructional video you can pick up a few tips on how to check the electrical status of a CR injector, courtesy of the experts at Delphi. Here you’ll find out:

• What equipment you’ll need

• How to measure resistance, inductance and insulation

• How to replace a common rail injector

What does the common rail injector do?

The common rail stores fuel that’s been pressurised inside the fuel pump, before the injector sprays it into the combustion chambers. With one injector per cylinder, each injector can be adjusted to the engine’s specification and optimum firing rate.

Why can common rail injectors fail?

Common rail injectors are pretty long-lasting in general, but wear and tear from issues such as deposit build-up and incorrect installation can affect them over time. There’s also the risk of water contamination from the fuel. Any of these can shorten a part’s lifespan.

What does the electrical diagnostic tool do?

You can use the YDT720 electrical diagnostic tool to check the resistance, inductance and insulation of solenoid-type injectors. If these checks don’t return the desired results (depending on make and model), it’s possible that there’s an electrical problem with the injector.

What is the error code for a fuel injector?

If you’re checking for an issue with the fuel injector using an OBD tool, the error code will likely show up in the range beginning P0200. Other codes in this area tend to be related to engine misfire issues – which is one of the symptoms of a faulty common rail injector.

Why do I code the injector with a BlueTech tool?

If you’re fitting a replacement common rail injector, first make a note of the new correction code. Once it’s installed, reprogramme the ECU with the new correction code. You do this so that the engine knows it needs to adjust timings for the fuel spray.