Piaggio CM155103 Cover Transmission Lid Aprilia – Atlantic, Sport City, Scarabeo, SR
Code: CM155103
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The Piaggio CM155103 is the transmission cover cap with "Aprilia" logo, an original spare part from the Piaggio group. It is the cap that closes the inspection opening on the transmission casing, on the variator side: it is removed to access the assembly without dismantling the entire casing, and features the embossed Aprilia logo. It can easily get lost during a rushed service, crack around the screw holes, or the logo can fade – at which point the side of the engine has a noticeable hole or patch.
✓ Strengths
- Original spare part – code CM155103: exact seats, joints, and dimensions, installs without forcing
- With "Aprilia" logo – this is the branded version, not the plain cap: the engine's aesthetic remains factory original
- One code for the entire Aprilia range – Atlantic, Sport City (all series), Scarabeo Light, Mojito, and SR
- Frequently lost spare part – if yours is missing or cracked, this replaces it
- Available in stock, immediate shipping
Technical features
| Brand | Piaggio – original spare part for Aprilia |
| Original code | CM155103 |
| Official designation | "Aprilia" transmission cover cap |
| Function | Closes the transmission casing inspection opening on the variator side |
| Mark | Aprilia logo |
| Content | 1 cap |
| Spare part type | Original (OEM) |
| Condition | New |
Compatibility
| Brand | Family | Models and years |
|---|---|---|
| Aprilia | Atlantic | Atlantic 125, 200, and 250 4T 2003-2008 · Atlantic 125 4T E3 2010-2012 · Atlantic 300 4T 2010-2012 (EMEA, APAC, LATAM) |
| Aprilia | Sport City | Sport City 125, 200, and 250 E2-E3 2004-2008 · Cube 125-200 carb. E3 2008-2010 and 250-300 ie E3 2008-2012 · ONE 125 4T E3 2008-2011 · Street 125 and 300 4T 4V E3 2012 |
| Aprilia | SR | SR MAX 300 2011-2014 · SR Motard 125 4T E3 2012-2014 (EMEA, APAC) |
| Aprilia | Mojito | Mojito 125 and 150 4T 2003-2007 (EMEA, NAFTA) |
| Scarabeo | Scarabeo Light | Scarabeo 250 Light E3 2006-2008 · Scarabeo 300 Light E3 2009-2010 (EMEA, APAC, NAFTA) |
• This is the version with the "Aprilia" logo. On Piaggio and Vespa models, the same cap has a different code – ask us if you need it for another vehicle from the group.
• This is only the cap: it is not the complete transmission cover or the casing.
• Take advantage of the change to check screws and sealing rubbers: they are often the reason why the old one cracked or fell off.
• If in doubt about your setup, send us the frame number: we will verify the correct code for you.
Recommended products
- Piaggio transmission cover cap – code CM155110: the version for Beverly, Liberty, Fly, X8, X9, MP3, and Vespa ET4
- Screws and sealing rubbers for the transmission cover
- Belt, rollers, and variator gaskets: if you're opening the transmission, you might as well do everything at once
Who it's perfect for
This is the spare part for anyone who has an Aprilia scooter with a missing cap on the transmission casing, or one that is cracked, faded, or patched with tape. It costs only a few euros and fixes a noticeable detail: the side of the engine returns to its factory appearance, logo included. It is also the part typically lost during a transmission service, when the cap is removed to check the belt and rollers and then cannot be found again.
Original spare part from the Piaggio group, new. Moon Bike S.r.l. is an authorized dealer based in Cercola (NA), Italy. Official manufacturer's warranty and shipping throughout Italy, Europe, and worldwide.
Frequently Asked Questions
What exactly is this part?
It is the transmission cover cap: the inspection plug on the casing, variator side, with the Aprilia logo.
Is it the variator cover?
No: it is the cap that is removed to inspect the variator, not the complete transmission cover.
Does it really have the Aprilia lettering?
Yes: it is the Aprilia branded version, the one fitted as standard on these models.
Will it fit my scooter?
It covers Atlantic, Sport City (all series), Scarabeo Light, Mojito, and SR. Check the table and, if in doubt, send us the frame number.
Is it original?
Yes: original spare part from the Piaggio group, code CM155103.
Compatible vehicles
- Aprilia Atlantic 125 (2003-2013)
- Aprilia Atlantic 200 (2003-2013)
- Aprilia Atlantic 250 (2003-2013)
- Aprilia Atlantic 300 (2003-2013)
- Aprilia SR GT 125 (2021-2025)
- Aprilia SR GT 200 (2021-2025)
- Aprilia Scarabeo 125 (2003-2011)
- Aprilia Scarabeo 200 (2003-2011)
- Aprilia Scarabeo 250 (2004-2016)
- Aprilia Scarabeo 300 (2007-2016)
- Aprilia RS 125 (1992-2013)
- Aprilia RS4 125 2011/2016
Not sure it fits? Contact us
Frequently asked questions
Shipping times +
Shipping within 24-48 working hours in Italy. Tracking via SMS/email. Free pickup at our store in Cercola (NA), ready within 1 hour.
Returns and refunds +
You have 14 days from delivery to return the item without giving a reason. Free returns for faulty items. Full details
Payment methods +
Credit cards (Visa, Mastercard, American Express), PayPal, Apple Pay, Google Pay, Shop Pay, Klarna (pay in 3) and cash on delivery.
Warranty and authenticity +
All products come with a 24-month legal warranty. We are an Official Piaggio Group Dealer: original spare parts are certified with a verifiable OEM code.
Technical support +
Our technical team is available on WhatsApp +39 392 456 1248 Mon-Fri 9:00–13:30 / 14:30–18:00 (Italian time), or by email.