Step 4 · Install the New Faucet, Drain, and P-trap
Following the manufacturer’s instructions, install the new faucet. This typically involves applying plumber's putty to the faucet base, inserting it into the sink holes, and tightening the mounting nuts from below. Connect the water supply lines, install the new drain assembly (ensuring proper gasket placement), and finally install the P-trap, tightening slip nuts by hand.