Unit Pumps and EUIs

Unit pumps and electronic unit injectors (EUIs) combine fuel pressurisation and injection in a single unit on many heavy-duty diesel engines. Diesel Fuel Parts supplies Bosch unit pumps and electronic unit injectors for trucks, plant and industrial engines, so you can replace the part online.

Signs a unit pump or EUI may be failing

• Hard starting or long cranking
• Misfires, rough idle or loss of power
• Black or white smoke
• Increased fuel consumption

These symptoms can also come from other parts of the fuel system, so have a diesel specialist test the unit before you replace it.

How to choose the right unit pump or EUI

These parts are matched to the specific engine, so use the part number on your existing unit together with your engine make, model and engine code.

Read our guides: common rail vs unit injectors and reman vs new diesel parts.

Need help choosing the correct part?

If you provide your vehicle or machine make, model, year and engine code and ask us, we'll help you confirm the correct part before you order. WhatsApp us on +27 72 364 6774.

Parts only: Diesel Fuel Parts supplies parts and does not offer fitment. We recommend that every part is installed by a qualified diesel professional, so the new part is not compromised in any way.