448806 Genuine Lower Spray Arm for Bosch, Siemens, Neff Dishwashers, BSH 00448806 Bottom Wash Arm

Bottom rack dishes coming out dirty is the classic sign of a cracked or blocked lower spray arm. Part 448806, also listed as 00448806, is the genuine BSH lower spray arm from the parts range shared by Bosch, Siemens and Neff dishwashers. Several lower arm designs have been used over the years, so check the number moulded on your old arm or your model's parts list before ordering.

Bosch dishwasher not cleaning the bottom rack?

The lower spray arm sits under the bottom basket and spins on the water pressure from the wash pump, firing jets up through the dishes. If it cracks, warps or loses a nozzle, the pressure escapes and it slows down or stops turning. Blocked jets have the same effect. Signs include food left on plates in the bottom basket, gritty residue and a cleaner top basket than bottom. Clean the jets and check that nothing in the basket hits the arm before replacing it, and replace it if it is split or broken.

Part details

• Genuine BSH part 448806
• Also listed as 00448806
• Lower spray arm for dishwashers
• BSH spare, from the maker of Bosch, Siemens and Neff

Swapping the lower spray arm

Turn the dishwasher off at the wall, then pull out the bottom basket. Most lower arms lift or unclip straight up from their hub, though some have a locking ring to turn first. Fit the new arm, make sure it clicks down, and spin it by hand to check it turns freely without touching the filters or basket. Run a program to check the bottom rack results.

Questions about this part

Is 448806 the same as 00448806?

Yes. BSH often writes its part numbers with leading zeros, so 448806 and 00448806 refer to the same lower spray arm. Either number may appear on your old arm or in the parts list for your dishwasher.