# Bosch 044 fuel pump

- Source: https://racingcarnetwork.com/wiki/bosch-044-fuel-pump/
- Publisher: Racing Car Network (racingcarnetwork.com), the race car marketplace
- Type: part · Brand: Bosch
- Discipline: parts
- Era: 1990s
- Last updated: 2026-07-06

The Bosch 044 is motorsport plumbing's common noun: the inline fuel pump (0 580 254 044) that fed three decades of rally, race and tuner builds — so canonical that its part-number suffix became the name, and so copied that authenticity is the market.

## Specifications

| Spec | Value |
|---|---|
| Type | Inline external fuel pump |
| Part | Bosch 0 580 254 044 |
| Flow | ~300 L/h at pressure |
| Application | Rally/race cells, turbo builds, restorations |
| Era | Group A → tuner decades; successors current |
| Diligence | Authenticity forensics + flow testing |
| Years | 1990–present (icon status) |
| Class | Motorsport fuel-system standard |

## History

Bosch's 0 580 254 044 inline pump earned its legend by being exactly what competition fuel systems needed before clever was available: ~300 litres per hour at real pressure, tank-external mounting that suited cell installations, industrial reliability from the world's largest automotive supplier, and OEM-motorsport pedigree (Group A and works rally programmes plumbed 044s as standard practice). The tuner decades canonised it — turbo builds worldwide specified '044' the way engine builders say 'Hewland'.

Its era's turning: modern in-tank pumps and brushless technology exceed the 044's flow and efficiency, E85-era compatibility questions aged the design, and Bosch's own catalogue evolution (the motorsport 200/300-series successors) repositioned the classic — but the installed base across historic rally cars, cell-fed race builds and period-correct restorations keeps demand structural.

Which created the market's defining problem: the 044 is among the most counterfeited components in motorsport — convincing fakes flood every marketplace — making provenance (authorised distributors, casing forensics, flow testing) the entire used-and-new buying question.

## Palmarès

Feeding works and customer rally programmes through the Group A and WRC eras, circuit and drag builds across the turbo decades, and the tuner world's collective horsepower — the plumbing palmares of motorsport's default external pump.

## What to check before you buy

Authenticity is the purchase: 044 counterfeits are epidemic — buy new only from authorised Bosch motorsport distributors, and treat marketplace bargains as fakes until casing details, markings and (decisively) flow-bench numbers prove otherwise. Used genuine pumps price on hours honesty and fuel-history (E85 and additive exposure ages internals; storage-dried pumps seize). Verify your system's real demands: modern in-tank and brushless alternatives out-flow the classic — the 044 is the right buy for period-correct installs, cell-external architectures and proven-system replication, not for maximum-effort builds. Fittings and check-valve condition complete the audit.

## Did you know

- '044' entered motorsport vocabulary as a common noun — the part-number suffix outgrew Bosch's naming entirely, the plumbing world's 'Hoover'.
- The pump's counterfeit epidemic is backhanded tribute: few components are faked at scale unless the genuine article's reputation is doing the selling.
- Group A rally plumbing standardised the 044 so thoroughly that period-correct restorations specify it for authenticity, not performance.

## Related entries

- ATL Saver Cell (fuel cell) — https://racingcarnetwork.com/wiki/atl-saver-cell/
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- Toyota 2JZ race engine — https://racingcarnetwork.com/wiki/toyota-2jz-race-engine/
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