Differences in Rear Callipers for W163/ML320? Vrbo Calliper

[Howard_silver]

Greetings,
I have recently joined in the hope that someone can assist with a problem. The automobile is a 2002 ML320, with a VIN concluding in A327127.
The vehicle is equipped with Brembo callipers on all sides; however, I have broken the bleed nipples on both rear callipers and wish to replace them.

Parts fiches indicate a part number alteration at VIN A343161; however, suppliers of new components only reflect a change at VIN A289560, coinciding with the transition to Brembo brakes.
From A289560 to A343161, the rear right calliper has a Brembo part number A1634230198; beyond A343161, it changes to A1634230898. A comparable alteration exists for the left side.
Is this merely a minor alteration, involving components sourced from a different Brembo facility, slight modifications in shape, etc., or is it a significant change?
My primary concern is whether these two versions of the Brembo rear calliper are interchangeable.
Can anyone assist?

[alpaco45]

What is your complete chassis number?

[alpaco45]

Why do you not drill out the broken nipple? Significantly more economical than substituting the calliper.

[Chrishazle]

Examine the Brakes International website using the registration number; they provide exceptional refurbishments. They also accept the old callipers as a trade-in. All postage has been covered.

[Howard_silver]

WDC1631542A327127
What is the significance of that change?

[Howard_silver]

Because it is a highly unpredictable endeavour. Indeed, it may be successful, but I prefer to accomplish the task in a single attempt.

[Howard_silver]

Thank you, but I am uncertain if you noticed that both I and the vehicle are located in France. Since 2021, the transportation of goods between France and the UK has become more complex than it was previously. Value Added Tax and import duty are required when goods cross the borders in both directions. Additionally, a handling fee applies.

[CyberNinja]

Where might I have encountered that? 🤔

[Howard_silver]

Indeed, it was cleverly concealed within another article!
Apologies.

[Howard_silver]

🙃