Home › Parts › Delta › Faucet Stems

Replacement for Delta RP12631 Stem Extender

Threads onto the existing stem and brings the handle back out past new tile or a tub surround. For Delta, Delex and Peerless two-handle and three-handle tub and shower faucets.

FourHome 4H2305427 · UPC 850054895042 · ASIN B0D9QBDQHM
Replacement for Delta RP12631 Stem Extender
Replacement for Delta RP12631 Stem Extender image 1Replacement for Delta RP12631 Stem Extender image 2Replacement for Delta RP12631 Stem Extender image 3Replacement for Delta RP12631 Stem Extender image 4Replacement for Delta RP12631 Stem Extender image 5Replacement for Delta RP12631 Stem Extender image 6
$11.98
Amazon price as of 2026-09-23. Current price is on Amazon.
Buy on AmazonBuying 10 or more? Volume pricing
Restocking on Amazon. Check the listing for current availability.
ReplacesDelta RP12631
Length2-7/8 in.
BroachD-profile
MaterialMolded polymer
Pack1 extender and 1 screw

Replaces these part numbers

OEM part numbersAftermarket equivalents
Delta RP12631
Delta RP18627 Roman tub stem extender (Delta lists RP12631 in its place)
Danco 7S-4D
Everbilt 74589
DRP12631
NRP12631

Will it fit?

Fits

  • Delta, Delex and Peerless two-handle and three-handle tub and shower faucets
  • Delta H25, H28 and H41 handle families
  • Delta 2600 series valves

Not compatible with

  • Single-handle Delta Monitor or MultiChoice valves
  • Delta R11000 diverter rough-in
  • A worn or leaking stem (that needs a new stem, not an extender)

Is this your part?

Back out the handle screw and look at the end of the stem. If the broach is a D shape rather than a round splined post, this extender indexes onto it.

When to replace it

After new tile, backerboard or a tub surround builds the wall out, the handle sits deep in the escutcheon, wobbles on the broach, will not seat flush, or cannot turn through its full range.

Specifications

FourHome part4H2305427
UPC850054895042
Length2-7/8 in.
Overall height3-3/16 in.
BroachD-profile
MaterialMolded polymer

What is in the box

How to install it

Time: About 5 minutes. Tools: Screwdriver.

  1. Back out the handle screw and pull the handle off.
  2. Thread the extender onto the exposed stem until it seats.
  3. Slide the handle over the new broach.
  4. Secure it with the supplied screw.
  5. Turn the handle through its full range to check it clears the finished wall.

Questions

Do I need to shut off the water?

No. The extender threads on outside the packing nut, so the valve never comes apart and there is nothing to bleed down.

Is there a 2-pack?

Yes. Delta packages its own RP12631 as two extenders with screws, and the FourHome 2-pack (Amazon ASIN B0H2BMGS7T) matches that quantity.

What if the stem itself leaks?

An extender only adds reach. A worn or leaking stem needs a new stem, such as the FourHome replacement for Delta RP1740.

Related parts

Repair guides

FourHome is not affiliated with or endorsed by any faucet manufacturer. Brand names and part numbers are used only to identify compatibility.