Piston
Liner Assembly 4" Piston Complete Extension Rod/Locknut/Chrome Liner/Gasket
- Catalogue reference number
- KA-285-400CH-A
- Catalogue brand
- Kerr
Catalogue fields identify reference material. They do not confirm stock, OEM authorization or interchange. Verify the nameplate, original number and edition.
Catalogue model references
These are retained catalogue associations, not confirmed fitment for your equipment. Choose the model you want to review.
Catalogue specification records
| Original field | Recorded value |
|---|---|
| Weight | 19.00 lb (≈ 8.62 kg, converted) |
Catalogue description records
This is a complete 4" piston liner assembly for the pump fluid end, supplied with the piston, extension rod, locknut, chrome liner and gasket as one ready-to-install package. The piston transmits force from the power end to the pumped fluid and reciprocates within the chrome liner bore on every stroke. It is an aftermarket replacement for Kerr KA-285-400CH-A, fits the KA-3500PT, T50 and T50-PT pumps, and weighs about 19 lb.
A pump piston transmits force from the power end to the pumped fluid inside the cylinder liner. It carries the sealing element and reciprocates within the liner bore on every stroke.
Catalogue question records
Original catalogue questions are retained. Fitment and availability need technical review.
- What is included in this 4" liner assembly?
- As described in its name, it comes complete with the piston, extension rod, locknut, chrome liner and gasket.
- Which pumps does this assembly fit?
- It is listed to fit the KA-3500PT, T50 and T50-PT pumps.
- What reference part number does it replace?
- It is an aftermarket replacement for Kerr part KA-285-400CH-A; the brand and number are for identification only and do not imply OEM manufacture.
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