Nut for windshield washer fluid tank filler pipe | 251 955 461

Nut for windscreen washer reservoir filler neck | 251 955 461

This coupling piece (OEM 251 955 461) sits under the cap of your windscreen washer reservoir and ensures the filler neck remains firmly secured. Especially in T3 models, which are prone to a lot of vibration, this nut can come loose, leading to leaks. It's a small but essential maintenance item that you should replace immediately if you're disassembling the tank. Combine this part with a new O-ring and filler neck for a complete result.