Check parts compatibilityIdentify your vehicle by plate, VIN or model.
Also compare the OE reference shown on your original part.
Clearly identified references
Compatibility checked before purchase
Delivery calculated before payment
Technical specifications
Thread
M 30
No screw [mm]
1.5 mm
Opening the key
46
Type of nut
unremovable
Screw/nut head profile
External hexagon
Logistics and customs
Weight
8 kg
References
Manufacturer ref.
503 230
KonexAuto ref.
KX0401142932454
IAM
503 230
TRADE_NUMBER
503 230 001
Comparable OE references
BMW
3112 1 126 500
1 128 336
1 123 282
1 126 500
3121 1 123 282
3121 1 128 336
Use the OE reference together with your vehicle to identify the correct part.
Open this tab to browse the vehicles associated with this part.
Replacement parts
Frequently asked questions
How do I check compatibility?
Select the exact vehicle, then compare OE references and fitting criteria with the original part.
Where can I check price and availability?
The purchase panel displays this part’s price and availability. Commercial information is checked before ordering.
How can I find the collection or delivery date?
Enter the requested details under Store collection or Delivery to get an estimate for your order.
How do I request a return or exchange?
Contact KonexAuto within 14 days of delivery with your order number and the part concerned. We will help you with your request.
Returns and exchanges
14 days after delivery
You can request a return or exchange within 14 days of receiving your order. Contact us to arrange the next steps.
1Contact KonexAuto with your order number and the part reference.
2We will explain the steps for your return or exchange.
3Pack the part carefully and follow the return instructions provided.
Product description
Stub axle nuts TOPRAN 503 230
Brand : TOPRAN. Manufacturer part number : 503 230. Category : Stub axle nuts.
Specifications : Thread : M 30 ; No screw [mm] : 1.5 mm ; Opening the key : 46 ; Type of nut : unremovable ; Screw/nut head profile : External hexagon.
OE cross-reference numbers : BMW : 3112 1 126 500 ; BMW : 1 128 336 ; BMW : 1 123 282 ; BMW : 1 126 500 ; BMW : 3121 1 123 282 ; BMW : 3121 1 128 336.
Google reviews
Laure Houtman
5/5
Devis téléphonique rapide à l'écoute de mon problème à trouver une solution rapide pour avoir ma pièce dans des brefs délais top du top !!!
Je recommande vivement ce magasin de pièces auto 👍🏼
(Translated by Google)
Quick phone quote, they listened to my problem and found a fast solution to get my part in no time – absolutely fantastic!!!
I highly recommend this auto parts store 👍🏼
TRAN-HUU-HUE Victor
5/5
Petit magasin agréable avec des prix abordables.
(Translated by Google)
Nice little shop with affordable prices.
Daddy NGUEMA
5/5
Super accueil ! Rapide et fiable pour vos commandes ! Je vous le recommande fortement
(Translated by Google)
Excellent service! Fast and reliable with your orders! I highly recommend them.
Rebeca Oke
4/5
Meryam Gherri
5/5
Content de mon passage chez cannexauto professional et efficace merci
(Translated by Google)
Happy with my experience at cannexauto, professional and efficient, thank you
Michel Vang
5/5
Franchement je vous recommande konexauto, c'est un peu plus chere que si vous commandé de votre coté mais le point fort qu'il faut retenir c'est que déjà il vous commande les pièces donc normalement c'est 99% que c'est la bonne pièce, les pièces sont de bonne qualité et en plus de sa, les pièces arrivent le lendemain. Merci pour votre service de qualité.
(Translated by Google)
Honestly, I recommend Konexauto. It's a bit more expensive than ordering on your own, but the main advantage is that they order the parts for you, so there's a 99% chance it's the right part. The parts are good quality, and on top of that, they arrive the next day. Thank you for your excellent service.
Adiogoo2K
5/5
Elhadji Benga
5/5
Elise Pongo
5/5
Bon accueil et le responsable toujours dynamique
(Translated by Google)
A warm welcome and the manager was always energetic.
Cisse Mariam
5/5
Allez y les yeux fermés à 100%
(Translated by Google)
Go for it without hesitation, 100%!
françois Raimbaux
5/5
Ditho Didjango
5/5
Coleen NTOKONDA
5/5
Super accueil, le vendeur très à l'écoute. Ils sont pas cher et délai de livraison dans la journée quasiment. Je recommande les yeux fermés 👍🏾
(Translated by Google)
Excellent service, the salesperson was very attentive. They're inexpensive and delivery was almost always the same day. I highly recommend them! 👍🏾
yann paricard
5/5
Très bonne équipe
Sérieux, respect du client,Très accueillant
Pièces de bonnes qualités
Vraiment rien à leurs reprocher depuis l'ouverture du magasin rester comme vous êtes
(Translated by Google)
Excellent team! Professional, respectful of the customer, very welcoming. High-quality parts. Absolutely nothing to complain about since the store opened. Keep up the good work!
enes dagdelen
5/5
Super gentil, il m’a même aidé a monter ma plaque malgré que j’étais loin du magasin, super super super
(Translated by Google)
Super nice guy, he even helped me install my license plate even though I was far from the store, super super super
Andy Wetsh
5/5
À l’écoute et très professionnel
(Translated by Google)
Attentive and very professional
Bekri Massinissa
5/5
Très efficace et les pièces arrivent le jour même
(Translated by Google)
Very efficient and the parts arrive the same day
William Wetsh
5/5
Aujourd’hui une Très bonnes expérience comme d’hab , on est toujours bien accueilli et conseillé , j’ai mes habitudes chez vous et ça va continuer 🙏
(Translated by Google)
Today was a great experience as usual. We are always warmly welcomed and given excellent advice. I'm a regular customer and I'll continue to be 🙏
Mathieu LOGEGO
5/5
Excellent,accueil chaleureux, renseignements fiable et service rapide.
Je recommande les yeux fermés.
(Translated by Google)
Excellent, warm welcome, reliable information, and fast service.
I highly recommend them.
Fabien Bories
5/5
Services rapide et serviable.
Commandé a 13h, récupéré a 15h
Parfait
Merci
(Translated by Google)
Fast and helpful service.
Ordered at 1 PM, picked up at 3 PM.
Perfect.
Thank you.
To improve our services, we use tracking tags to analyse traffic on our platform and show you targeted advertisements. By choosing “Accept”, you agree to activate these technologies. You can adjust your choices at any time through our preference manager.
Your choice is saved for six months. You can change it at any time using “Manage my cookies” at the bottom of the page.