Hydraulic Piston Pump Cylinder Block
The cylinder block is a core part of hydraulic piston pumps used in heavy machinery engines, housing the pistons that convert hydraulic fluid pressure into mechanical power. It falls under HTS 8412.90.9015 as a part of hydraulic power engines and motors, specifically within the 'other' category for such components.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If designed for use in hydraulic pumps rather than engines
Pumps and liquid elevators have separate headings; parts thereof shift to 8413 if primary function is pumping, not powering an engine.
If for use in construction or earth-moving machinery
Parts of specific machinery like excavators under Chapter 84 take precedence over general engine parts classification.
If imported as part of a machinery set for industrial assembly
Unspecified machinery parts default here if not exclusively identifiable as hydraulic engine components.
Not sure which classification is right?
The Tariff Assistant works through the GRI rules on your specific product to reach the right HTS code — and can price the duty on it in the same conversation.
Import Tips & Compliance
• Verify material composition (e.g
• steel alloy) and ensure it matches hydraulic engine specs to avoid misclassification as general machinery parts
• Provide detailed engineering drawings and OEM part numbers in documentation for customs valuation and origin certification
Related Products under HTS 8412.90.90.15
Hydraulic Motor Port Plate
Port plates manage inlet and outlet timing of hydraulic fluid in motors, critical for volumetric efficiency. This component is included in HTS 8412.90.9015 as other parts of hydraulic power motors.
Hydraulic Motor Displacement Control Spool
Spools in displacement controls shift motor output between high/low speeds in hydraulic power units. HTS 8412.90.9015 other parts category.
Hydraulic Engine Cooling Fan Hub
Hubs mount cooling fans to hydraulic engine shafts, aiding heat dissipation in compact power units. Classified under HTS 8412.90.9015.
Hydraulic Power Motor End Cap
End caps close motor housings, integrating bearing seats and fluid ports for hydraulic power motors. Part of HTS 8412.90.9015 other parts.
Hydraulic Engine Pressure Relief Valve Cartridge
Cartridge valves protect hydraulic engines from overpressure by diverting excess fluid. Falls under other parts in HTS 8412.90.9015.
Hydraulic Power Engine Shaft Seal Kit
Seal kits prevent fluid leakage at rotating shafts in hydraulic engines, including O-rings and lip seals. Included in HTS 8412.90.9015 as other parts.