Audi Q7 ABS Pump

[pete-p]

My ABS pump has failed. Getting error 01276 for faulty ABS pump.

With thanks to Maria at Prestige I have the part number I need for a replacement pump but I see plenty with a different letter at the end. Would anyone know what that difference would signify?

4L0614517L is the correct one and hard to find
4L0614517D is a good price but not good if it won't work! Also seen ending in other letters e.g. 'A' or 'E'.