Grohe Faucet Replacement Cartridges and Service
Grohe SILKMOVE ceramic cartridge: Grohe 46374000 (most single-handle kitchen and bathroom faucets, $25--$45): available through Grohe authorized dealers, Amazon, and grohe.com. Grohe does not stock cartridges at Home Depot or Lowe's nationwide -- online ordering is required for most US markets. Grohe lifetime warranty for US residential use: covers function and StarLight Chrome finish for the life of original residential ownership. Call Grohe America at 1-877-476-4374 for warranty service. Grohe O-ring kit (Grohe 47661000, $8--$15): for base drip issues. Grohe spray head replacement (model-specific): contact Grohe America for part numbers -- Grohe spray head connections use G3/8 or G1/2 metric threads, not the US standard connections used by Moen and Delta.