DONGLI / PART REFERENCE

Piston Cup

L1618 SCDI NITRH SGOLD Piston Cup 440 SS

Catalogue reference number
P546348
Catalogue brand
Not recorded

Catalogue fields identify reference material. They do not confirm stock, OEM authorization or interchange. Verify the nameplate, original number and edition.

L1618 SCDI NITRH SGOLD Piston Cup 440 SS (P546348) — Piston Cup

Catalogue model references

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Catalogue specification records

Original fieldRecorded value
Weight708.00 lb (≈ 321.14 kg, converted)
Catalogue description records

This is the L1618 SCDI NITRH SGOLD piston cup, designation 440 SS, a fluid-end sealing part for L1618-series reciprocating pumps. The piston cup is the flexible sealing element fitted to the piston; it maintains the seal against the cylinder liner bore as the piston reciprocates, so wear here directly affects volumetric efficiency. It is supplied under part number P546348 and fits the L1618 and L1618SC pumps.

A piston cup is the flexible sealing element fitted to the piston in the fluid end. It maintains the seal against the cylinder liner bore as the piston reciprocates, so wear here directly affects volumetric efficiency.

Catalogue question records

Original catalogue questions are retained. Fitment and availability need technical review.

Which pumps does this piston cup fit?
It is listed to fit the L1618 and L1618SC pumps.
What does a piston cup do?
It is the flexible sealing element on the piston that seals against the cylinder liner bore as the piston reciprocates; because it is a primary wear surface, it is a routine fluid-end service item.
What reference part number does it replace?
It is an aftermarket replacement carrying part number P546348, supplied to match the original component's form and fit.
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