Mazda CX-3 Fuel Pump: Specs, Fitment & Common Faults

On the CX-3, a genuine, serious UK safety recall (R/2021/435) covers a fuel pump impeller that can crack and cause stalling.

Illustration for editorial purposes

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OEM Part Number: confirm via VIN — fuel pumps (aftermarket) Bosch 0 580 454 094 / Pierburg 7.21440.51.0

Accuracy note: Covers the Mazda CX-3 (2015-) as listed in the UK aftermarket catalogues. In-tank fuel pumps are sold two ways: as a complete feed unit (the pump in its swirl pot with the fuel-level sender and float) or as a bare pump that is fitted into the old housing, and petrol and diesel versions are not interchangeable — most diesels have only a low-pressure lift pump in the tank, with the high-pressure pump on the engine. The references below are UK aftermarket catalogue listings for this generation, labelled by brand; genuine numbers are shown only where a listing quotes one. Check fuel type, the plug pin count and whether your car has one sender or two (saddle tanks on 4x4 and some larger cars) against your VIN before ordering.

Fuel pumps / feed units (aftermarket)	Bosch 0 580 454 094 (bare in-tank pump); Delphi FE0429-12B1 (bare in-tank pump, petrol, 113 mm, metal housing, without pressure sensor); Engitech ENT100053 (bare in-tank pump, 4 bar / 125 l/h, 2 connectors, 54.5 mm body, 188 mm); Ridex 458F0005 (bare in-tank pump, 3.3 bar / 100 l/h, 38 mm body, 115 mm, 10 mm in / 9 mm out); Ridex 458F0040 (bare in-tank pump, 3.4 bar / 100 l/h, 2 connectors); Pierburg 7.21440.51.0 (pre-supply / lift pump, 0.3-0.4 bar, 2 connectors, 133.5 mm, 8 mm ports, for the diesel); ERA 770162A (bare in-tank pump, 3.2 bar / 120 l/h, 2 connectors, 38 mm body).
Types & variants	No complete CX-3 module with sender is offered; the petrol repair is a bare 38 mm pump fitted into the original housing. The diesels take a low-pressure lift pump only (Pierburg 7.21440.51.0, Ridex 458F0008 at 0.27-0.38 bar, ERA 770034A at 0.2 bar / 70 l/h). No early/late sender split is shown.
Genuine (OE) numbers quoted	142504 (Kamoka 8410016); 3111137300 (Hoffer 7506385 / Meat & Doria 76385); 170429F500 (Hoffer 7506416 / Meat & Doria 76416); 8450008680 (Kamoka 8410005). No Mazda numbers are quoted.
Fitment notes	Petrol and diesel pumps are not interchangeable. The gauge sender stays in the car since every option is a bare pump; compare the old and new part, in particular the body diameter and outlet size, before fitting, which the Energy G10007 and Esen SKV 02SKV227 listings specifically ask for.

Confirmed: A Genuine, Serious UK Safety Recall Worth Checking Your VIN Against — Mazda CX-3 Fuel Pump

This is genuinely worth checking directly against your specific car: Mazda issued a UK safety recall (reference R/2021/435) covering models manufactured between October 2017 and September 2019, for a genuine fault in the low-pressure fuel pump manufactured by Denso — the plastic impeller inside can crack and deform, potentially causing the pump to fail and the engine to stall while driving or fail to start. Around 27,000 UK-registered vehicles were covered, with the fix being a full replacement pump fitted free of charge.

A genuinely useful, real diagnostic point worth knowing: a pre-failure pump can produce intermittent stalling that a basic roadside pressure test doesn't catch — one documented case saw a breakdown recovery service find no fault via pressure testing, despite the car repeatedly cutting out, with the recall replacement ultimately resolving it completely.

It's also genuinely worth knowing that dealers commonly ask that the fuel tank be no more than a quarter full before the appointment, and that some documented cases saw a noticeable amount of fuel go missing during the process. An evaporative emissions fault code appearing shortly after this specific recall work has also been documented in some cases.

Mazda CX-3 Fuel Pump: A Part That Fails at the Worst Possible Moments

This is one of the more inconveniently timed failures the Mazda CX-3 can have — it tends to strand drivers mid-journey rather than politely failing while the car's parked on the drive. Recognising the early warning signs buys real time to sort it before you're stuck somewhere inconvenient.

Mazda CX-3 Fuel Pump: Watch: Replacing It

🎬 Watch: 1.5 Mazda 2 Fuel Pump Replacement (sister (mazda 2))

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CX-3 built on Mazda 2 DJ

Before you buy: fuel pump specifications vary by engine size and fuel type, and petrol/diesel versions are never interchangeable. Always confirm against your VIN before ordering.

Mazda CX-3 Fuel Pump: What It Does

Delivering fuel from the tank to the engine at the correct pressure for combustion is the Mazda CX-3's fuel pump's whole job. It lives inside the tank itself, submerged in fuel, which is exactly why replacing something this small is a more involved job than it looks.

Mazda CX-3 Fuel Pump: Generations & Engines: Fuel Pump Type

Accuracy note: these are documented patterns by generation and engine family, not a substitute for confirming your exact engine code — always verify against your V5C before ordering, since petrol and diesel pumps are never interchangeable.

2015–present, SkyActiv-G petrol & SkyActiv-D diesel	Spans both diesel (in-tank lift pump plus an engine-mounted high-pressure pump) and petrol (in-tank low-pressure pump, plus a separate high-pressure pump if direct-injection) variants — confirm your exact engine before ordering

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Mazda CX-3 Fuel Pump: Warning Signs, DIY Difficulty & Aftermarket Advice

These are the same regardless of make or model — see our full Fuel Pump Guide for symptoms to watch for (including the low-pressure vs high-pressure distinction on direct-injection engines), confirming fitment against your VIN, and OE suppliers worth knowing.

More Mazda Fuel Pump

The same part, covered across other Mazda models.