Bosch Dishwasher Not Cleaning Properly? Lower Spray Arm 00668385 – Fix Poor Wash Coverage Fast

If your Bosch dishwasher is leaving dishes dirty, spotted, or with food residue after a full cycle, a cracked, clogged, or broken lower spray arm is the most common cause. In Bosch SHE, SHX, and SHS series dishwashers, the lower spray arm rotates during the wash cycle to distribute water across the bottom rack. When it cracks, warps, or has blocked spray nozzles, water pressure drops and coverage becomes uneven — leaving the bottom rack items consistently under-washed while the top rack may appear fine. ⚡ Common failure point in Bosch-built dishwashers across the SHE and SHX series. Part 00668385 is the genuine OEM replacement that restores full 360° spray coverage and consistent cleaning performance immediately.

❓ Is This the Right Part?

This is the correct fix if ALL of the following are true:

• ✔ You have a Bosch or Thermador dishwasher (SHE, SHX, SHS, S36KMK, or S46KMK series) — dishwasher powers on and runs full cycles
• ✔ Water supply and inlet valve are confirmed working — the tub fills normally at cycle start
• ✔ Top rack items wash acceptably — the problem is isolated to the bottom rack
• ✔ ONLY problem is poor cleaning, spots, or food residue on bottom rack items — not a detergent dispenser or water temperature issue

Not sure? Send us your model number — we’ll confirm before you order.

🔧 Common Symptoms

• Bottom rack dishes consistently dirty or spotted after a full cycle
• Visible cracks, warping, or broken nozzle tips on the spray arm
• Spray arm wobbles, doesn’t spin freely, or is seized in place
• Reduced water pressure during wash cycle — audible difference in spray intensity

✔ If these symptoms match, this is the most likely failed component in the system.

✔ In most cases, replacing this lower spray arm restores full cleaning performance immediately.

📦 Part Details

• Part Number: 00668385
• Type: Dishwasher Lower Spray Arm Assembly
• Replaces: 668385
• Brands: Bosch, Thermador, Gaggenau

⚙️ Installation

Skill Level: Easy — 5 to 10 minutes, no tools required. Disconnect power before servicing. Remove the bottom rack and locate the spray arm at the base of the tub. Twist the spray arm counterclockwise to unlock it from the centre hub, lift it straight up and off, then press the new arm onto the hub and twist clockwise until it locks. Reinstall the bottom rack, restore power, and run a short cycle to confirm the arm spins freely and water coverage is restored.

💡 Pro Tip