668148 Genuine Lower Spray Arm for Bosch, Siemens, Neff Dishwashers, BSH 00668148 Bottom Wash Arm

Part 668148 is the genuine bottom spray arm for Bosch, Siemens and Neff dishwashers, also written 00668148. It sits under the lower rack and spins as water is pumped through it, spraying the plates and pots above. BSH makes lower spray arms in several versions, so check that 668148 is the number listed for your model before ordering.

Dishwasher not cleaning the bottom rack?

Water from the circulation pump enters the hub of the spray arm and leaves through angled jets, and the force of those jets is what spins the arm. If the arm cracks, warps or loses an end cap, or its jets are blocked by seeds, glass or scale, pressure escapes and the arm slows or stops. The result is dirty dishes on the lower rack, gritty residue, or a clean patch in the middle with dirty edges. Spin the arm by hand. It should turn freely without wobbling.

Part details

• Genuine BSH bottom spray arm, part 668148
• Also written 00668148
• For Bosch, Siemens and Neff dishwashers
• Models not yet listed, match the number before ordering

Swapping the spray arm

Turn the dishwasher off and take out the lower rack. Many BSH lower spray arms lift or unclip straight up from the hub, though some are held by a nut or a twist lock. Rinse the filter and check the hub is clear before fitting the new arm. Push it down until it seats, spin it to check it clears the rack, then run a rinse program.

Questions about this part

Is 668148 the upper or lower spray arm?

668148 is the bottom spray arm that sits under the lower rack. The upper spray arm is a separate BSH part, often supplied with its inlet pipe, so check the number for each position on your parts list.