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Product Description
The Interpump W4021 DX is an industrial positive-displacement pump rated for 400 bar (5800 psi) high-pressure applications, delivering 21 L/min flow at 1450 rpm. With 16.17 kW power input and compact dimensions, it suits demanding hydraulic and pressure-washing systems.
Spare Parts & Repair Kits
Official W4021 parts list — 158 parts, 54 available in catalog
Repair Kits — Order These for Routine Maintenance
Individual Components
Need multiple parts? Request a bundled quote
54 parts available in our catalog — get a single quote with volume pricing
Official W4021 parts list — Industrial Pumps (66 Series)
Recommended Spare Parts
Interpump Products
3G Electric supplies Interpump pumps & compressors. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.
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