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Brak zdjęcia dla Fuel Pump Assembly 5Q0-919-051-CN

Fuel Pump Assembly 5Q0-919-051-CN

Nr katalogowy
5Q0-919-051-CN 5q0919051cn 5q0-919-051-cn 5Q0919051CN
Nazwy alternatywne
VW MQB In-Tank Fuel Pump Module 5Q0 919 051 CN Fuel Unit Golf 7 Fuel Pump Assembly VAG Fuel Level Sender Pump 5Q0919051 Fuel Pump
Zakres cen
$71 – $396
z 6 ofert
Oryginalne części 5
Części używane 1
Pasujące pojazdy 10
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Specyfikacja techniczna

OEM Part Number 5Q0919051CN
Part Type Electric In-Tank Fuel Pump and Sender Assembly
Fuel Type Compatibility Petrol (gasoline) and mild-hybrid (eTSI / e-TEC) only
Platform Volkswagen Group MQB
Production Years 2012–2026
Pre-Filter / Strainer Integrated (included in assembly)
Sender Type Fuel level sender (integrated)
Material Fuel-resistant engineering plastics and metals
Installation Location In-tank, accessed via rear seat or trunk floor panel
Replacement Interval On-condition / as needed — no scheduled interval

Jak wymienić Fuel Pump Assembly

Replacing the 5Q0919051CN fuel pump and sender assembly is an intermediate-level repair that requires depressurizing the fuel system, accessing the in-tank unit from the cabin floor, and carefully handling fuel lines. Always work in a well-ventilated area away from ignition sources. Consult the factory workshop manual for model-specific torque values and wiring diagrams before beginning.

Szybkie wskazówki

  • Always use a fuel pump lock ring spanner specific to VW Group applications — improvised tools can crack the plastic tank collar and cause costly fuel leaks.
  • Mark or photograph the orientation arrow on the old assembly before removal; the new unit must be installed at the same rotational position to ensure the float arm moves freely.
  • Replace the sealing O-ring or gasket every time the pump is removed — reusing the old seal is a leading cause of post-repair fuel odor and leaks.
  • After reconnecting the battery, cycle the ignition key to 'ON' (position II) three times for 5 seconds each without cranking to fully prime the fuel system and purge air before the first start.
  • Confirm your vehicle is a petrol or mild-hybrid (eTSI/e-TEC) variant before installation — this assembly is not compatible with diesel, CNG, or plug-in hybrid versions and incorrect fitment will cause immediate pump failure.
  • Cross-reference your VIN with the dealer parts system to confirm this CN revision supersedes your current part number before discarding the original.

  1. Safety Preparation

    Disconnect the negative battery terminal and allow the vehicle to sit for at least 10 minutes to depressurize the fuel system. Ensure the work area is well-ventilated and free of open flames or sparks. Have an approved fuel container and absorbent rags available.

  2. Access the Fuel Pump Module

    Fold or remove the rear seat cushion (or lift the trunk floor panel, depending on model). Pull back the carpet and foam insulation to expose the plastic fuel pump access cover on top of the fuel tank.

  3. Disconnect Electrical and Fuel Line Connections

    Unplug the electrical connector from the pump/sender unit. Using appropriate fuel line disconnect tools, carefully release and remove the fuel supply line and any return or vent lines connected to the module. Be prepared for residual fuel spillage.

  4. Remove the Retaining Ring and Extract the Assembly

    Using a fuel pump lock ring tool (spanner wrench) sized for VW Group applications, rotate the retaining ring counter-clockwise to release it. Carefully lift the pump and sender assembly straight up, tilting slightly as needed to clear the float arm without bending it. Note the orientation arrow on the flange for reinstallation.

  5. Prepare and Install the New Assembly

    Transfer any reusable sealing rings or gaskets if not supplied with the new unit (always prefer a new seal). Align the orientation arrow on the new 5Q0919051CN assembly with the mark on the tank collar. Lower the unit carefully into the tank, ensuring the float arm is correctly positioned and not kinked.

  6. Secure the Retaining Ring

    Hand-thread the retaining ring clockwise, then tighten with the lock ring tool to the torque specification listed in the vehicle workshop manual. Do not over-tighten, as the tank collar threads can crack.

  7. Reconnect Lines and Electrical Connector

    Reattach all fuel lines until each quick-connect clicks securely into place. Plug in the electrical connector. Double-check that no lines are kinked or improperly seated.

  8. Test and Reassemble

    Reconnect the battery. Turn the ignition to the 'on' position (without cranking) two or three times to prime the fuel system and check for leaks before starting. Start the engine, verify no fuel odor or visible leaks, and confirm the fuel gauge reads correctly. Reinstall insulation, carpet, and seat cushion.

Oznaki zużycia części

  • Engine Sputtering at High Speed

    A failing pump struggles to maintain adequate fuel pressure under high-demand conditions, causing the engine to misfire or sputter when accelerating at highway speeds.

  • Loss of Power Under Load

    When the pump cannot deliver sufficient fuel volume during hard acceleration or climbing hills, the engine may feel sluggish or go into a reduced-power mode.

  • Difficulty Starting

    A worn pump may not build adequate fuel rail pressure during cranking, resulting in extended crank times, hard starts, or a no-start condition — especially when the engine is hot.

  • Engine Stalling

    Intermittent pump failure can cut fuel supply unexpectedly, causing the engine to stall at idle or during low-speed driving, sometimes without warning.

  • Whining Noise from Fuel Tank

    An audible high-pitched whine or buzz from the rear of the vehicle — particularly noticeable when the ignition is first turned on — indicates a pump motor that is wearing out or running dry.

  • Inaccurate Fuel Level Gauge

    Since this is a combined pump and sender unit, a failed sender component will cause the dashboard fuel gauge to read incorrectly, stick at one position, or fluctuate erratically.

Częstotliwość wymiany

Standard Replacement
On-condition only
Volkswagen Group does not publish a scheduled replacement interval for this assembly. Replace when failure symptoms appear or when diagnostic testing confirms inadequate fuel pressure or sender fault codes.
Severe / High-Risk Conditions
Inspect sooner if symptoms arise
Vehicles frequently operated with a very low fuel level (under one-quarter tank) accelerate pump wear, as the fuel serves as the primary coolant for the pump motor. Inspect promptly if symptoms develop in such usage patterns.

There is no time- or mileage-based service interval for this component. Replacement is driven entirely by symptoms, fault codes (e.g., P0087, P0628, sending unit DTCs), or confirmed fuel pressure test results below manufacturer specification.

Najczęściej zadawane pytania

Will part number 5Q0919051CN fit my vehicle?

This assembly is designed for MQB-platform Volkswagen Group petrol and mild-hybrid vehicles including Golf VII, Golf VIII, T-Roc, Audi A3 (8V and 8Y), SEAT Leon (KL), CUPRA Formentor, and Škoda Octavia IV produced between 2012 and 2026. Always verify fitment by cross-referencing your 17-digit VIN with the dealer parts system before purchasing, as trim level, engine code, and fuel type all affect compatibility.

Does this part replace older numbers like 5Q0919051AA or 5Q0919051BC?

Yes. The CN revision supersedes earlier OEM numbers including 5Q0919051AA, 5Q0919051BC, 5Q0919051CB, 5Q0919051CC, and 5Q0919051GB. The CN part is the current production version and is a direct drop-in replacement for all of these earlier revisions.

Is this fuel pump compatible with diesel or plug-in hybrid variants?

No. Part 5Q0919051CN is specifically designed for petrol (gasoline) and mild-hybrid (eTSI/e-TEC) engines only. It is not suitable for diesel, compressed natural gas (CNG), or plug-in hybrid (GTE/PHEV) variants. Installing this part in an incompatible application will result in immediate failure.

Can I install this fuel pump myself, or does it require a professional?

An experienced DIYer with basic mechanical knowledge and the correct tools — particularly a VW-specific fuel pump lock ring spanner — can complete this repair. However, working with fuel systems involves fire and health hazards. If you are not comfortable handling fuel lines or do not have the proper tools, it is strongly recommended to have the repair performed by a qualified technician.

Does the new assembly include a new O-ring or gasket?

OEM assemblies from Volkswagen Group typically include a new sealing ring, but verify the contents of your specific package upon receipt. Never reuse the old O-ring or gasket — a fresh seal is essential to prevent fuel leaks after installation.

What fault codes are associated with a failing 5Q0919051CN?

Common diagnostic trouble codes linked to fuel pump and sender failure on MQB-platform vehicles include P0087 (fuel rail pressure too low), P0627/P0628 (fuel pump control circuit), and sender-related codes indicating implausible or stuck fuel level signals. Always perform a fuel pressure test and read live data with VCDS or an OEM-level scan tool to confirm the diagnosis before replacing the assembly.

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