Unit injectors: precision injection for optimum engine performance

A unit injector or pump injector is a pump and injector in one. Technical ingenuity that is used by various manufacturers in the passenger car and truck industry, partly because of its high reliability combined with very high achievable injection pressures. Pump injectors build up their own pressure and deliver the fuel into the cylinders with great precision. With the right timing and atomisation, together with the oxygen present, they ensure optimum combustion. An important component therefore, the load on pump injectors is high. A big advantage is that they do their work under the valve cover in the engine oil, allowing the lubrication to do its job. But strict environmental requirements place high demands on pump injector technology. It is therefore easy to imagine that, after a long time, the operation is no longer optimal and replacement is required. Many pump injectors are standard stock in our own warehouse or can be offered at short notice. We only supply original products.

Possible causes unit injector failure:

  • External contamination
  • Short circuit in the coil
  • Possible electrical control disrupted
  • Normal wear and aging
  • Lubricating properties of the fuel deficient
  • Thermal overload

Total 203 products in group unit injectors

UNIT INJECTOR SYSTEM 0414720266
Robert Bosch
UNIT INJECTOR SYSTEM
UNIT INJECTOR SYSTEM 0414720270
Robert Bosch
UNIT INJECTOR SYSTEM 0414720271
Robert Bosch
UNIT INJECTOR SYSTEM
UNIT INJECTOR SYSTEM 0414720272
Robert Bosch
UNIT INJECTOR SYSTEM 0414720273
Robert Bosch
UNIT INJECTOR SYSTEM 0414720278
Robert Bosch
UNIT INJECTOR SYSTEM
UNIT INJECTOR SYSTEM 0414720279
Robert Bosch
UNIT INJECTOR SYSTEM
UNIT INJECTOR SYSTEM 0414720280
Robert Bosch
UNIT INJECTOR SYSTEM
UNIT INJECTOR SYSTEM 0414720282
Robert Bosch
UNIT INJECTOR SYSTEM
UNIT INJECTOR SYSTEM 0414720359
Robert Bosch
UNIT INJECTOR SYSTEM
UNIT INJECTOR SYSTEM 0414720360
Robert Bosch
UNIT INJECTOR SYSTEM
UNIT INJECTOR SYSTEM 0414720362
Robert Bosch
UNIT INJECTOR SYSTEM
UNIT INJECTOR SYSTEM 0414720363
Robert Bosch
UNIT INJECTOR SYSTEM
UNIT INJECTOR SYSTEM 0414720364
Robert Bosch
UNIT INJECTOR SYSTEM
UNIT INJECTOR SYSTEM 0414720453
Robert Bosch
UNIT INJECTOR SYSTEM 0414720454
Robert Bosch
UNIT INJECTOR SYSTEM
EUI - A3 BEBE4B12004
Delphi
EUI - E1 BEBE4C00101
Delphi
EUI - E1 BEBE4C01101
Delphi
EUI - E1 BEBE4C03101
Delphi
EUI - E1 BEBE4C04101
Delphi

Only replace the faulty pump injector or all of them anyway?

In principle, replacing only the defective one is sufficient. If the differences between them are too great, it may be better to replace more than just the defective one. Some injectors may also be on the verge of rejection. We then recommend replacing these as well to avoid a follow-up repair in the (short) term.

To guarantee proper operation, it is very important to carefully follow the manufacturer’s installation instructions. Clean work is an absolute necessity. Naturally, any cause of injector failure must be eliminated prior to installation.