125cc / 150cc Engine Parts

Is my A.J.S a Euro 3, Euro 4 or Euro 5 model?

It is important to order the correct parts for your A.J.S scooter or motorcycle.
There are important differences between Euro 3 and Euro 4 and Euro 5 parts.
1) Euro 3 models have Carburetters and Capacitor Discharge Ignition (CDI)
2) Euro 4 and Euro 5 models have Electronic Fuel Injection (EFI) or Electronic Carburetters and an Engine Control Unit (ECU) to control ignition and fuel management. Exhaust systems are also different between versions.

Tip: Only Euro 4 and Euro 5 models have a Malfunction Indicator Light (MIL) on the speedometer. (this looks like an orange engine logo)

Check your vehicle's VIN number in the ranges below:
All Modena 50 are Euro 3

Modena 125 Euro 3
VIN range:
Start: L5YBDCJA*E1106984
Finish: L5YBDCJA*G1165498
(* is a random character)

Modena 125 Euro 4
VIN range:
Start: L5YBDCJA*H1133772
Finish: L5YBDCJA*L1176647
(* is a random character)

Modena 125 Euro 5
VIN range:
Start: L5YBDCJA*M1146318
Finish: ongoing
(* is a random character)