FM IE79003 Five-Hole Petrol Injector – Piaggio X9, Beverly, Gilera Nexus and Aprilia 400-500

The IE79003 5-hole fuel injector is the compatible replacement part for the injector fitted on 400 and 500 cc maxi-scooters from the Piaggio group. It replaces the original Piaggio 8304275 and covers a very wide range: X9 500 and Evolution, Beverly 400 and 500, X8 400, X Evo 400, Gilera Nexus 500, and various Aprilia Atlantic and Scarabeo models. It is the component that atomizes fuel into the intake manifold: when it loses flow or becomes clogged, the engine starts with difficulty in the morning, idles irregularly, and consumes more fuel. New spare part.

✓ Strengths

• A fraction of the original's price – Piaggio's 8304275 costs around €124 from retailers, with an official price list over €180: on a twenty-year-old scooter, the difference influences the decision whether to repair it or not.
• Available when the original is not – the 8304275 is often out of stock because these models have been out of production for a long time. The compatible part is the practical solution.
• 5-hole spray pattern – the atomization pattern specified for the 400-500 models of this family. It is not the 6-hole of the 250s nor the 4-hole of the latest generation Beverly 350-500s.
• One code for four brands – the same injector covers Piaggio, Gilera, and Aprilia, as they share the Master 400-500 engine.
• Sold by a dealer, not a marketplace – if you are unsure about the code, we help you find the correct one instead of making you deal with a return.

Technical features

Vehicle compatibility

Not sure about your vehicle's version? Contact us for more information: with the chassis number, we can verify the exact code before you order.

Who it's perfect for

This is the replacement part for those who still keep an X9, an early Beverly, a Nexus, or an Atlantic on the road: valid maxi-scooters that are now between fifteen and twenty-five years old and have a low market value. For these vehicles, the original injector, when available, costs more than many are willing to invest, and the workshop quote often sways the decision towards scrapping. It is the choice for those who want to get it running again at a proportionate cost, and for workshops that need to provide a quote that the client will accept.

Frequently Asked Questions

Is it an original Piaggio part?
No. It is a compatible spare part, code IE79003, which replaces the original Piaggio 8304275. If you want the part with the Piaggio code, write to us: we are authorized dealers and can try to order it for you, keeping in mind that the original for these out-of-production models is often unavailable.

How do I distinguish the 5-hole from the others?
Count the holes on the injector tip, on the side that enters the manifold. Practical rule for Piaggio group engines: 5 holes on 400-500cc models of the X9 and early Beverly generation, 6 holes on 250s, 3 holes on more recent 125-300s, 4 holes on the latest generation Beverly 350-500s and the X10. The connections are very similar but not interchangeable: if you have doubts, take a picture of the disassembled one and send it to us.

Why does the same injector fit Piaggio, Gilera, and Aprilia?
Because the X9, Beverly, Nexus, Atlantic, and Scarabeo models of that generation share the same 400-500cc single-cylinder engine from the Piaggio group, and therefore the same fuel system. This is why a single code covers four brands.

How do I know if the injector needs to be changed?
Typical symptoms include difficult cold starting, irregular idling, increased fuel consumption, and loss of acceleration. However, these are not exclusive symptoms: it's advisable to first check for error codes in the ECU and inspect the spark plug, air filter, and throttle body. If the diagnosis indicates irregular flow or a clogged injector, this is the replacement part.

Are the sealing O-rings included?
No, the supply is only the injector itself. On vehicles many years old, it is advisable to provide new gaskets anyway: the original ones are often hardened and leak.