This excerpt from the user's manual can explain the problem of your basket.
"... For dishwashers with a cutlery basket (depending on the model), for safety reasons, store the cutlery with blades and fork tips in the cutlery basket. Inverted knives and fork tips present a risk of injury, but utensils will be easier to clean and dry when placed in the cutlery basket with the handles down. Use only special regenerating salts, possibly coarse, or other pure boiling salts...."
NEFF S52L68X1EU, NEFF GX 550, S52M53X4EU, NEFF S723P60X0E, FRANKE FDW-612 E6P A++, 117.0266.492, 1170266492, , NEFF GV 453, S51M53X6EU, NEFF S58E50X1EU, NEFF S72N65X5EU, NEFF S51E50X3GB, S51E50X3GB
Manufacturer's part price is £88.35 Discount for bulk (starting at 10 units), £85.44 per unit
This manufacturer part is recomended by NEFF, which gives it a 10/10 rating.
This spare part is recommended for your NEFF S51E50X3GB dish washer .
All spare parts are new and come with two years warranty
① Carefully check your NEFF dish washer's product number
② Start search
Here are examples for partial reference for dishwasher :
Where to find the reference?