Toto SP LIFT ROD W/ KNOB WYETH 1H THP4912#PN

The THP4912 is the lift rod with knob for a TOTO Wyeth single-hole lavatory faucet. It's the vertical rod behind the spout that you pull up to close the pop-up drain and push down to open it, sold as a replacement part rather than a complete drain assembly. If the rod on a Wyeth faucet is bent, stripped at the knob, or missing, this is the piece that restores pop-up operation without pulling the faucet.

It's a Wyeth single-hole part. TOTO builds lift rods to the specific faucet body, so a rod cut for the Wyeth 1H isn't a universal replacement across other TOTO lines. Match the faucet by its series name before ordering. If the faucet on the sink isn't a Wyeth, the correct rod is the one carrying that series' own THP part number.

Rod and knob only. The pop-up body, the clevis strap, the horizontal pivot rod and the drain flange are separate parts. If the problem is that the stopper won't seat, the fault is usually in the clevis or pivot rather than the lift rod, and replacing the rod alone won't fix it. Buy this when the rod itself is damaged or the knob is gone.

It is. The lift rod and knob are the exposed, hand-touched part of a lavatory faucet, so they take the abuse in apartments, hotels and restrooms. Keeping a couple of the THP4912 on the shelf for buildings standardized on the polished nickel Wyeth single-hole means a bent or missing rod is a five-minute swap instead of a faucet replacement. Stock it by the same finish code used on the faucets in the building.