The Sanitaire 63857 base assembly is the OEM replacement base for Sanitaire Multi-Surface upright vacuums. A cracked or broken base disrupts brushroll alignment and reduces suction at the nozzle.

Compatible with Sanitaire Multi-Surface models S9120, SC9150, SC9180, SC9150A, SC9150B, SC9180A, and SC9180B. Gray finish. Genuine Sanitaire part; confirm your full model number before ordering, as base geometry is model-specific.