HS Code for Torque converter

Torque converters are classified under HS code 8483.40, which covers gears and gearing, gear boxes, and other speed changers. This classification is appropriate because a torque converter is a hydrodynamic fluid coupling used to transfer rotating power from a prime mover, such as an internal combustion engine, to a rotating driven load. In the context of the Harmonized System, it is viewed as a component of power transmission machinery. Heading 8483 is specifically designed for transmission shafts, cranks, bearing housings, and gears. Subheading 8483.40 explicitly mentions torque converters as a type of speed changer. The device functions by using a pump (impeller), a turbine, and a stator to multiply torque when there is a substantial difference between input and output rotational speeds. Even when these components are intended for use in motor vehicles, the General Rules for the Interpretation (GRI) of the Harmonized System often prioritize the specific heading for the component (8483) over the general heading for vehicle parts (8708), provided the component is specifically named in the nomenclature.

Products Included

• Automatic transmission torque converters
• Industrial hydrodynamic torque converters
• Variable speed fluid couplings
• Stator and impeller assemblies (when presented together)
• Heavy machinery torque converters
• Marine torque converters

Common Misclassification

The most frequent misclassification for torque converters occurs with HS code 8708.99, which covers parts and accessories of motor vehicles. While torque converters are essential components of automotive transmissions, the General Rules for Interpretation (GRI 1) state that parts of general use or specifically named items in other chapters should be classified there first. Since 8483.40 explicitly mentions torque converters, it takes precedence over the general vehicle parts category. Another common mistake is using 8483.60, which covers clutches and shaft couplings. While a torque converter acts as a coupling, its function as a speed and torque changer specifically aligns it with the definitions found in 8483.40 rather than simple mechanical couplings.

FAQ

What is the HS code for a torque converter?

The HS code for a torque converter is 8483.40, which includes gear boxes and other speed changers.

Are parts of a torque converter classified here?

Individual parts like turbines or impellers may be classified under 8483.90 as parts of transmission elements, depending on their specific nature and presentation.