Pfister exact part record
Pfister 974-321: application and identification
974-321 is a cartridge with adapter tied to documented Pfister applications. Confirm the model, generation, and installed geometry before purchase.
Direct answer
Pfister's official 974-3210 record identifies a cartridge with an adapter for 0X8, JX8, VB8, and JV8 shallow-casting valves. This is a source-backed application, not a fit claim based on visual similarity. The official page marks 974-3210 discontinued and replaced by 974-5299; confirm the shallow-casting valve and required adapter or extension pieces.
Fit facts
What identifies this match
Use these details together. One matching feature does not establish compatibility.
- Manufacturer
- Pfister
- Service part
- 974-321
- Documented system
- 0X8, JX8, VB8, and JV8 shallow-casting tub and shower valves
- Fixture
- Tub and shower valve
- Part type
- Cartridge with adapter
- Control configuration
- Single-handle tub and shower control
Documented application
Pfister's official 974-3210 record identifies a cartridge with an adapter for 0X8, JX8, VB8, and JV8 shallow-casting valves.
The relationship should be confirmed in the official service record for the complete faucet or rough-in model. A family name or matching trim is useful evidence, but it is not the same as a model-level parts callout.
Generation and configuration check
The official page marks 974-3210 discontinued and replaced by 974-5299; confirm the shallow-casting valve and required adapter or extension pieces.
Record whether the control is single-handle tub and shower control and whether the service diagram describes the complete assembly or only the replaceable internal component.
Physical confirmation
Compare the adapter, body depth, stem, keys, seals, and limit stop with the complete installed assembly.
Shut off the water and remove the existing part only when the fixture can be safely returned to service. Photograph its installed orientation and keep every retainer for comparison.
Purchase decision
Order 974-321 only when the official model relationship and the installed configuration agree. If either check conflicts, pause and identify the complete faucet or concealed valve before buying.
Do not infer compatibility from color, finish, handle style, or a marketplace photo. Those cues can group candidates, but they do not supersede the manufacturer's parts diagram.
Questions
Before you remove or replace the part
Is 974-321 compatible with every Pfister tub and shower valve?
No. Pfister's official 974-3210 record identifies a cartridge with an adapter for 0X8, JX8, VB8, and JV8 shallow-casting valves. Confirm the complete model and generation in Pfister's support material.
Can trim style identify the internal part?
Not reliably. Trim may be shared across valves, retained during updates, or visually similar across generations. Use the rough-in or faucet model and the installed component.
What should I compare after removal?
Compare the stem interface, body dimensions, locating features, seals, ports, rotation or side, and retention method with the official 974-321 service image.
Reference trail