MEC EUR Fuel Tank for Vespa PX Lusso with Separate Lubrication
Includes mounts for oil tank and fuel gauge
The MEC EUR fuel tank is designed for Vespa PX Lusso models manufactured in 1984 or later that come standard with separate lubrication and an electric fuel gauge. Manufactured in Italy, the tank’s design, connections, and mounting points are based on the corresponding original versions of the PX Lusso, EFL, Iris, and Arcobaleno.
This version features both the necessary mounting for the separate oil tank and the opening for the plastic fuel level sensor used on these models. This preserves both the standard automatic oil supply and the fuel gauge in the steering head.
The tank is designed for the twist-lock system of the PX Lusso series. The fuel valve, fuel tank cap, oil tank, oil tank cap, fuel level sensor, gaskets, and other mounting hardware are not included and must be reused or purchased separately.
MEC EUR
Made in Italy
PX Lusso from 1984 onward
with separate lubrication
with fuel gauge
for plastic fuel level sensors
Mounting parts not included
Features of the MEC EUR Tank
For PX Lusso: compatible with later PX tank models manufactured from 1984 onward
For separate lubrication: Features a housing and mounting for the separate oil tank
Includes a tankanzeige: opening and mounting points for the plastic fuel sender
Lusso fuel cap: designed for the convenient twist-lock mechanism of the later PX series
Made in Italy: Manufactured in Italy
Design close to the original: for the intended installation position in the PX frame
Replacement in case of corrosion: suitable for original tanks that are rusted on the inside, leaking, or damaged
For PX Lusso with automatic separate lubrication
With separate lubrication, gasoline and two-stroke oil are carried in separate tanks. The oil is metered into the fuel as needed via the engine’s lubrication system. Manual premixing of the fuel is not required during standard operation.
On these models, the fuel tank must be shaped so that the separate oil tank can be mounted together with it in the frame. The MEC-EUR version offered here is designed specifically for this fuel system.
Features of this tank design
Mounting and clearance for the separate oil tank
Mounting for the plastic fuel level sensor
Version for vehicles with an electronic fuel gauge
Fuel cap mount in PX Lusso format
Designed for the fuel system of the PX Lusso models manufactured from 1984 onward
Do not confuse with the version without separate lubrication
Tanks for PX models with and without separate lubrication differ in shape, fuel sender design, and installation configuration.
This version is designed for an additional oil tank
The corresponding fuel tank sender is made of plastic
Models without separate lubrication use a different tank depending on the version
Compare the existing tank, oil tank, and fuel sender before ordering
Mounting bracket for the separate oil tank
The oil tank is a separate component and is installed in the vehicle together with the fuel tank. The design of the MEC-EUR tank provides the necessary space for this tank combination.
An existing oil tank can be reused provided it is compatible with the PX-Lusso model and has no cracks, deformations, or damaged connections. The oil tank itself is not included with this item.
Check the oil tank and oil supply
Inspect the oil tank for cracks, brittleness, and leaks
Check the oil hose for signs of aging and ensure it is securely fastened
Check the oil tank cap and its venting
Check that the oil level indicator or monitoring system is functioning properly
After working on the oil supply system, bleed the system according to the manufacturer’s instructions
Fuel gauge with plastic fuel level sensor
The Vespa PX Lusso is equipped with an electronic fuel gauge. The fuel level sensor detects the fuel level in the tank and transmits it to the instrument cluster on the steering head.
For PX Lusso models with separate lubrication, the plastic fuel level sensor shown here is used. Fuel level sensors of other designs may differ in overall height, mounting, float arrangement, and electrical connection.
Check the fuel level sensor before installation
Intended for plastic fuel level sensors
Fuel level sensor not included
Check that the float arm moves freely
Check the electrical connection and plug
Replace the fuel level sensor gasket if it is damaged or hardened
After installation, check the fuel gauge across its entire display range
Fuel cap for the PX Lusso series
The fuel tank is designed for the Vespa PX Lusso fuel cap. This cap features an easy-to-use twist-lock mechanism and differs from the classic flip-top cap found on earlier Vespa large-frame models.
Additionally, the separate lubrication version requires a separate cap for the oil tank. Neither cap is included with the tank.
PX Lusso-style fuel cap required
Separate oil tank cap required
Check the cap gaskets before installation
Do not block the cap vents
Check both fill openings for leaks after installation
Made in Italy and designed to closely match the original
The MEC EUR tank is manufactured in Italy. Its design is based on the stock tank used on the Vespa PX Lusso, EFL, Iris, and Arcobaleno.
The positions of the fuel connection, fuel level sensor mount, fuel cap, and oil tank area are designed to match this fuel system. This makes the tank a suitable replacement for a damaged or heavily corroded original tank.
When should the fuel tank be replaced?
After several decades, rust and deposits can form inside the tank. Particularly long periods of inactivity with low fuel levels promote condensation and corrosion.
If rust particles reach the carburetor via the fuel valve and fuel hose, they can clog filters, jets, and fuel passages. In cases of severe corrosion or leaky welds, replacement is often more practical than a costly repair.
Typical signs of a damaged tank
Rust particles in the fuel valve, fuel hose, or carburetor
Fuel that has turned brown or reddish
Repeatedly clogged carburetor jets
Fuel odor when the vehicle is parked
Damp spots or drips under the tank
Leaky welds
Damaged fuel valve or fuel level sensor mount
Severe corrosion inside the tank
Differentiation of PX Tank Designs
| Tank Model |
Fuel gauge |
Separate lubrication |
Tank sensor |
| Without Tank Gauge |
No |
No |
Not available |
| With fuel gauge, without oil tank mount |
Yes |
No |
Metal construction |
| This model |
Yes |
Yes |
Plastic version |
The actual separate lubrication system, the fuel tank sensor design, and the configuration of the installed fuel tank system are decisive factors.
Compatible vehicle models
Vespa PX Lusso models from model year 1984 onward
Vespa PX EFL
Vespa PX Iris
Vespa PX Arcobaleno
For models with separate lubrication only
For models with a fuel gauge and plastic fuel sender
Model designations vary depending on the country of sale. The key distinguishing features are the separate lubrication system, the electric fuel gauge, and the plastic fuel level sensor.
Technical Specifications
| Manufacturer |
MEC EUR |
| Component |
Fuel Tank |
| Manufacturing |
Made in Italy |
| Vehicle Series |
Vespa PX Lusso / EFL / Iris / Arcobaleno |
| Year of Manufacture |
From 1984 |
| Separate lubrication |
Yes |
| Oil tank capacity |
Available |
| Fuel gauge |
Yes |
| Fuel sensor mount |
Available |
| Fuel sensor type |
Plastic fuel level sensor |
| Fuel cap mount |
PX Lusso |
| Fuel valve |
Not included |
| Oil tank |
Not included |
| Fuel sensor |
Not included |
| Fuel tank cap |
Not included |
| Oil tank cap |
Not included |
| Mounting hardware |
Not included |
Contents of the package
1x MEC EUR fuel tank for Vespa PX Lusso
Version for separate lubrication
With mounting for a separate oil tank
With mounting for plastic fuel level sensor
With mounting for PX Lusso fuel cap
Additional parts required
The tank is shipped without mounting hardware or accessories. Depending on the vehicle in question, the following additional components are required:
Fuel valve compatible with the PX-Lusso fuel tank model
Plastic fuel sender for the fuel gauge
Gas tank sensor seal
Separate oil tank for separate lubrication
Oil tank cap
Fuel tank cap for the PX-Lusso series
Gasket between the tank and the frame
Fuel hose and, if applicable, hose clamps
Oil hose and associated fittings
Mounting screws and washers
Fuel valve wrench for installing the fuel valve
Check before installation
Compare the existing fuel tank design directly with the new part
Check the existing separate lubrication system and oil tank design
Check that the fuel tank sender is the plastic version
Check the oil tank for cracks, embrittlement, and leaks
Check the fuel valve for proper function and contamination
Check the fuel tank sender and cap gaskets
Replace the gasket between the tank and the frame if necessary
Check fuel and oil hoses for cracks and signs of aging
Check the inside of the tank for foreign objects before installation
Installation Instructions
Fuel valve: Install using a suitable fuel valve wrench and tighten until snug
Fuel level sensor: Install with an intact gasket and tighten the fasteners evenly
Oil tank: Position it without tension next to or below the fuel tank
Oil hose: Route the hose so it is free of kinks and secure it reliably
Fuel hose: Route the hose to the correct length and ensure it is free of kinks
Electrical connection: Connect the fuel level sensor cables correctly and secure them to prevent chafing
Frame gasket: Install between the tank and the frame
Caps: Check the seals, ventilation, and secure closure
Leak test: First, fill the fuel and oil tanks only partially and check all connections
Oil supply: After working on the separate lubrication system, check and bleed the system according to the manufacturer’s specifications
Check the separate lubrication system before the first ride
After replacing the tank or performing work on the oil tank and oil hose, ensure that the oil supply is fully functional. Air in the system or a kinked oil hose can interrupt engine lubrication.
Fill the oil tank with suitable two-stroke oil
Check the oil hose and connections for leaks
Bleed the system according to Piaggio specifications
Check the oil pump for proper operation
Do not operate the engine normally until the oil supply has been confirmed
Conclusion
The MEC EUR tank is the ideal replacement solution for Vespa PX Lusso models manufactured in 1984 or later with separate lubrication and an electric fuel gauge.
Its design accommodates both the separate oil tank and the plastic fuel gauge. This allows the automatic oil supply and the standard fuel gauge to continue functioning.
It is important to ensure the correct fit: This version is not intended for vehicles without separate lubrication. The fuel valve, oil tank, fuel level sensor, fuel tank cap, oil tank cap, gaskets, and mounting hardware are not included and must be purchased separately or reused from the existing tank.
FAQs about the MEC EUR Tank for Vespa PX Lusso
The tank is designed for Vespa PX Lusso, EFL, Iris, and Arcobaleno models manufactured in 1984 or later that are equipped with separate lubrication, an electric fuel gauge, and a plastic fuel sender.
No. The fuel tank has the appropriate shape and mounting points for the separate oil tank. The oil tank and its cap must be reused or ordered separately.
This tank design is intended for the plastic fuel level sensor used on PX Lusso models with separate lubrication. The fuel level sensor itself is not included.
This model is designed for the plastic fuel level sensor. A metal fuel level sensor may differ in design, mounting, and float arrangement and should not be used without prior testing.
No. The fuel valve, fuel tank cap, oil tank cap, gaskets, and other mounting hardware are not included.
The tank is designed for the twist-off cap used on the PX-Lusso series. Additionally, a separate cap is required for the oil tank.
This version is specifically designed for the fuel system with a separate oil tank. For a PX without separate lubrication, you should choose the tank variant designed for that purpose, which does not include an oil tank mount.
If the oil tank or oil line has been disconnected or completely drained, the oil supply must be checked in accordance with Piaggio specifications and bled if necessary. The engine must not be operated until proper lubrication is ensured.
Yes. The gasket prevents direct contact between the tank and the frame. A damaged, hardened, or missing gasket should be replaced.
A suitable fuel valve wrench is recommended for installing the fuel valve. This allows you to access and tighten the internal mounting nut with precision.
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