Volkswagen Up! Fuel Pump: Specs, Fitment & Common Faults

A genuinely important distinction for TSI petrol Up!s, plus what diesel owners should know about fuel pump diagnosis done properly.

Illustration for editorial purposes

Find Volkswagen Up! Fuel Pump Here!

Opens live listings in a new tab.

OEM Part Number: 1S0919051K (as quoted in catalogue listings — confirm via VIN) — aftermarket fuel pumps Hüco 133167 / Astemo 2503167

Accuracy note: Covers the Volkswagen Up! (2011-) 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)	Astemo 2503167 (feed unit with sender, petrol); Hüco 133167 (feed unit with sender, petrol); Hüco 133598 (feed unit with sender, petrol, no fuel return system); VDO 2803580299302 (feed unit, petrol, no fuel return system); VDO 2803580319302 (feed unit, petrol, no fuel return system); Ridex 1382F0055 (feed unit with sender, petrol, 4 bar, 110 l/h, for PR number 1A5); Ridex 1382F0030 (in-tank feed unit with sender, petrol, 3 bar, 100 l/h, 4-pin, 12 V); Ridex 458F0011 (bare in-tank pump, 3 bar, 2-pin, 12 V, without swirl pot, with seal ring, 50 mm diameter, 135 mm long).
Types & variants	All the branded listings are petrol feed units with sender for the 1.0 engines, with two VDO variants and two Hüco variants covering the returnless fuel system. The Ridex 458F0011 is the only bare pump insert for the existing housing. The Ridex 1382F0012 and 1382F0002 listed at 0.5 bar are diesel-type lift units that do not match any up! engine, as the range is petrol, CNG EcoFuel and electric e-Up only.
Genuine (OE) numbers quoted	1S0919051K (Engitech ENT100246)
Fitment notes	The up! has a returnless petrol system, so the feed unit carries its own pressure regulator and the 3-4 bar rating matters. The bare Ridex pump keeps the original sender; a complete module replaces it, and the EcoFuel CNG and e-Up models do not use these pumps.

Two Pumps, Two Very Different Failure Patterns — And a Genuine FSI vs TSI Distinction — Volkswagen Up! Fuel Pump

Modern VW petrol and diesel engines with direct injection use two separate fuel pumps working together: a low-pressure pump inside the tank (accessed from under the rear seat), and a high-pressure pump mounted on the engine itself. A whining noise specifically from the rear seat area points to the in-tank low-pressure pump; hesitation, loss of power, or hard starting points more toward the engine-mounted high-pressure pump instead — correctly identifying which one is at fault matters, since the high-pressure pump is considerably more expensive to replace.

A genuinely important distinction if you have a TSI/TFSI petrol engine: older FSI engines had a well-documented cam follower wear issue that could damage the camshaft and high-pressure pump together — but this specifically does not apply to the later TSI/TFSI engines, which use a different pump and follower design. Don't assume FSI-era advice about mandatory cam follower inspections applies to your TSI-engined car; confirm which engine family you actually have before worrying about a fault that may not be relevant.

If your car is diesel-engined, it's worth knowing about a genuinely serious, documented issue: metal filings (swarf) generated internally within a failing high-pressure pump can contaminate the entire fuel system — injectors, fuel lines, and the tank itself — turning what looks like a straightforward pump replacement into a full fuel system rebuild. Real cases have seen this escalate to repair bills in the thousands once contamination is confirmed throughout the system. If a high-pressure pump has failed on a diesel, insisting on a proper check of the injectors and fuel lines for metal contamination — rather than simply fitting a new pump and hoping for the best — is a genuinely worthwhile precaution, even though it adds to the initial cost.

Before paying for a replacement pump on any engine: never replace a high-pressure fuel pump based on symptoms alone — always confirm via fault codes and live fuel pressure data first (commonly P0087, P2293, P2294, or similar), since several other issues (weak lift pump, clogged filter, failing pressure sensor) can produce very similar symptoms without the expensive pump actually being at fault.

Volkswagen Up! Fuel Pump: A Part That Fails at the Worst Possible Moments

On the Volkswagen Up!, this particular failure has a knack for terrible timing, stranding drivers mid-journey instead of giving fair warning while the car's parked up safely. Spotting the early signs early enough is what stands between a routine fix and a roadside breakdown.

Volkswagen Up! Fuel Pump: Watch: Replacing It

🎬 Watch: Replacing the fuel pump on a VW UP, MPI naturally aspirated

Watch on YouTube ↗

1.0 MPI Up

Volkswagen Up! Fuel Pump reference plate

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.

Volkswagen Up! Fuel Pump: What It Does

Getting fuel from tank to engine at the correct combustion pressure is down to the fuel pump, and on the Volkswagen Up! that pump sits inside the tank, submerged in fuel. That location is exactly why swapping out such a small part is rarely a quick job.

Volkswagen Up! 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.

2011–present, 1.0 MPI/TSI petrol, incl. GTI	Petrol (direct injection): in-tank low-pressure pump plus a separate engine-mounted high-pressure pump

Find Volkswagen Up! Fuel Pump Here!

Opens live listings in a new tab.

Volkswagen Up! 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 Volkswagen Fuel Pump

The same part, covered across other Volkswagen models.