303089 Hardened Chrome Liner 4.5" Weatherford WDD340
The 303089 Hardened Chrome Liner is a 4.5-inch cylinder liner for the fluid end of a Weatherford pump, providing the replaceable bore in which the piston reciprocates on every stroke. It is sized to fit the WDD340 pump. As a primary wear surface in the fluid end, it is a routine service item, supplied as an aftermarket replacement part under part number 303089; it ships at about 23 lb.
What it is
This is a replacement part for the listed reciprocating pump models, supplied to match the original component's form and fit.
Pump compatibility
Specifications
| Property | Value |
|---|---|
| Weight | 23.00 lb (≈ 10.43 kg, converted) |
| Width | 8.00 in / 20.3 cm |
| Height | 8.00 in / 20.3 cm |
| Depth | 10.50 in / 26.7 cm |
Manufacturer technical notes
Weatherford WDD340 4.5" Hardened Chrome Liner (SKU:303089), forged 42CrMo alloy steel (tensile strength ≥1100MPa) with plasma-sprayed chrome plating (≥100μm thickness, HRC60-64), salt spray tested >1500hrs corrosion-free, API 7K compliant, pressure-resistant ≥70MPa, NACE MR0175 sour service certified.
Verbatim from the Dongli product page on dlhddrilling.com.
Replacement / interchange
Aftermarket replacement cross-referencing 303089.
FAQ
- Which pump does the 303089 liner fit?
- It is sized for the Weatherford WDD340 pump. Only this fitment is listed.
- What does this liner do in the pump?
- It is the 4.5-inch cylinder liner — the replaceable bore in the fluid end where the piston reciprocates. Because it is a main wear surface, it is a routine service item.
- Is 303089 an OEM liner?
- It is an aftermarket replacement liner supplied under part number 303089 to match the Weatherford WDD340 fluid end by form and fit.
Related parts
All brand names, model numbers and part numbers are used for identification and cross-reference only and do not imply original-equipment manufacture. This is an aftermarket replacement part.
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