Question 1

How much is a high-pressure pump for a SMART Fortwo?

Accepted Answer

An exchange high-pressure pump for the SMART Fortwo starts at €325.00. A single reference, 0445010025, covers this model: the price shown is that one part, with no variant to compare.

Question 2

Which high-pressure pump reference fits a SMART Fortwo?

Accepted Answer

The reference is 0445010025. It is what settles the match on a SMART Fortwo — not the vehicle's trade name, nor its year.

Question 3

Why is only one pump reference offered for the Fortwo?

Accepted Answer

Because the Fortwo engines listed here were built with the same high-pressure pump. The choice is unique, which rules out any risk of mismatch.

Question 4

Where is the reference found on a pump removed from a SMART Fortwo?

Accepted Answer

It is stamped on the nameplate. The marking stays readable even on a part coated with grime. It is the only reading that confirms the match with the reference expected on a SMART Fortwo.

Question 5

How do I find out which engine my Fortwo has?

Accepted Answer

The registration document states the version and the rated power of the vehicle; the engine code itself is stamped on the block. That engine-and-power pairing places the car within the Fortwo range, and leads to the right pump reference.

Question 6

Is the year of my Fortwo enough to choose the high-pressure pump?

Accepted Answer

No. Two Fortwo of the same year can take different pumps depending on their engine. It is the engine-and-power pairing that determines the reference, and the reading on the nameplate that confirms it.

Question 7

What happens to the old pump from my SMART Fortwo?

Accepted Answer

The part ordered is sold as an exchange unit: it has already been remanufactured, and the pump you remove from the Fortwo goes back into the reconditioning circuit. Return terms are stated at checkout.

Question 8

How does an exchange pump differ from a new part?

Accepted Answer

An exchange high-pressure pump is an original part restored to working order: wear parts are replaced and the assembly is pressure-tested. It carries the same reference as the pump removed from the Fortwo and fits in its place.

Question 9

How do I spot a worn high-pressure pump on a SMART Fortwo?

Accepted Answer

On a SMART Fortwo, a failing pump shows up as long cranking, hesitation under acceleration, a loss of power under load and a drop into limp mode. These signs overlap with other fuel system faults: diagnosis is a job for a qualified technician.

Question 10

Why does my Fortwo go into limp mode?

Accepted Answer

The ECU of the Fortwo limits the engine when rail pressure no longer reaches the value the engine expects. A high-pressure pump that no longer holds pressure is one possible cause, alongside a clogged filter or a faulty regulator.

Question 11

Does long cranking always come from the high-pressure pump?

Accepted Answer

No. Long cranking can come from the pump itself, but equally from a fault on the fuel filter, the pressure regulator or the common rail. The symptom alone is not enough to condemn the part.

Question 12

Which common rail pump range does a Fortwo take?

Accepted Answer

The CP1, CP3 and CP4 pumps of the Bosch range are covered, and it is the reference that names the one fitted from the factory to the engine in the Fortwo. The range alone is not enough to order: the reading on the nameplate settles it.

Question 13

How do I confirm the fault before ordering a pump for the Fortwo?

Accepted Answer

By a fault code read and a rail pressure check, carried out by a qualified technician, before any order for a SMART Fortwo. That check separates a failed pump from a clogged filter or a leak elsewhere on the circuit — faults with similar symptoms but different remedies.

Question 14

Can I order a pump for the Fortwo without knowing the exact reference?

Accepted Answer

This page lists a single reference for the Fortwo, 0445010025: the reading on the nameplate then serves to confirm, not to choose. Where the engine is in doubt, the check belongs to a qualified technician before ordering.

Question 15

Does a pump ordered for a SMART Fortwo fit straight on?

Accepted Answer

Yes, provided the reference is the original fitment for the engine in the Fortwo: it keeps the drive, the mounting and the connections of the part removed. Fitting is a job for a qualified automotive technician.

Variant / Engine	Part Category	References
0.8 CDI 41 hp – Cabrio	Certified exchange unit	1 part(s)
0.8 CDI 41 hp – City Coupé	Certified exchange unit	1 part(s)
0.8 CDI 41 hp – Forfour	Certified exchange unit	1 part(s)
1.5 CDI 68 hp	Certified exchange unit	1 part(s)

Turbo Garrett 753420-5006S

Injector SIEMENS-VDO 5WS40536

High-pressure pump SIEMENS-VDO 5WS40019

High-pressure pump SMART Fortwo

Available products

High-pressure pump Bosch 0445010025

High-pressure pump Bosch 0445010120

Frequently asked questions

About this category

Available engine variants and applications

SMART Fortwo model variants overview

Diagnostics and wear symptoms

Core deposit and exchange procedure

24-Month warranty & fast delivery

Manufacturer warranty compliance