Peerless exact part record
Peerless RP54801 Stem Unit Assembly Identification
RP54801 is a stem unit assembly documented for Peerless two-handle faucets whose parts diagrams list RP54801. Use the marked part number and the fixture's service information rather than appearance alone.
Direct answer
Peerless lists RP54801 as a stem unit assembly with a seat, spring, bonnet nut, and washer. The official page identifies it for documented two-handle kitchen and bathroom faucet applications. Before ordering, verify the faucet model, diagram callout, affected side, opening direction, and the old unit's spline and sealing interfaces.
Fit facts
What identifies this match
Use these details together. One matching feature does not establish compatibility.
- Brand
- Peerless
- Documented part number
- RP54801
- Part class
- stem unit assembly
- Documented application
- Peerless two-handle faucets whose parts diagrams list RP54801
- Fixture context
- two-handle faucet where documented
- Handle context
- separate hot and cold handles
What this record identifies
Peerless lists RP54801 as a stem unit assembly with a seat, spring, bonnet nut, and washer. This is a part record, not the name of a complete faucet or valve. The manufacturer or authorized product documentation linked below is the basis for the application shown here.
The relevant fixture context is two-handle faucet where documented, with separate hot and cold handles. A matching silhouette is useful for narrowing a search, but it does not establish fit.
Documented model or system relationship
The official page identifies it for documented two-handle kitchen and bathroom faucet applications. That relationship is narrower than a claim that the part fits every Peerless product. Product families can contain different generations, valve bodies, or handle arrangements.
Read the source's application details together with the service sheet for the installed fixture. If the fixture documentation names another part number, follow that documentation rather than this visual guide.
Checks to make before purchase
verify the faucet model, diagram callout, affected side, opening direction, and the old unit's spline and sealing interfaces. Compare the complete identifier, connection geometry, locating features, and handle interface while the old part is available.
Also confirm whether the listing is for the internal service part alone or includes seals, clips, adapters, or other installation pieces. Package contents can matter even when the main component number is correct.
How to separate common lookalikes
A stem unit is not a single-handle mixing cartridge; hot and cold installation details and included wear parts must match the model documentation. Do not treat color, overall length, or a similar stem profile as a substitute for an application listing.
A model number from the faucet, installation sheet, receipt, or valve trim is stronger evidence than a photo match. When markings are missing, contact Peerless support with clear photos and measurements before buying.
Service context
Each stem unit controls one supply beneath one handle; inventory the included seat, spring, bonnet nut, and washer before service. Shut off the water and verify that flow has stopped before opening the fixture. Protect finished surfaces and preserve the original orientation of clips, stops, and seals.
If corrosion, a damaged valve body, or uncertain in-wall plumbing prevents a positive identification, pause the repair and use a qualified plumbing professional.
Questions
Before you remove or replace the part
Is RP54801 the complete faucet or valve?
No. It is the stem unit assembly identified in this record. The complete fixture or system is Peerless two-handle faucets whose parts diagrams list RP54801.
Does RP54801 fit every Peerless fixture?
No such broad fit is established here. Use it only where Peerless or the linked authoritative documentation identifies RP54801 for the installed model or system.
Can appearance alone confirm the replacement?
No. Confirm the full part number, documented application, connection geometry, locating features, and handle interface before purchase.
What if the fixture model cannot be found?
Keep the old part, photograph its markings and interfaces, and ask Peerless support to identify it. Avoid forcing a near-match into the fixture.