Study Guide

PARTS

ACCESSORY

Automotive brake pads

Essential component of the braking system

•         A vehicle cannot safely operate without functioning brakes.

Brake pads are essential components of the braking system.

Car roof rack

Optional carrying attachment

•         The vehicle can be driven without a roof rack.

Adds optional carrying capacity; does not affect the vehicle's essential function.

Pump impeller

Core internal component

•         The pump cannot move fluid without the impeller.

It performs the machine's primary function.

Printer dust cover

Optional protective item

•         The printer operates without it.

The cover protects the machine but is not essential to printing.

Laptop keyboard (built-in)

Core input component

Without a keyboard, the laptop cannot be operated normally.      

Mobile phone protective case

Optional protective item

•         The phone functions fully without the case.

Enhances durability or appearance but is not required for operation.

Camera tripod

Optional stability device

•         The camera can take photos without a tripod.

Improves stability and enables certain types of photography but is not essential.

Example: Parts and accessories for bicycle items

Let's look at bicycle items and whether they are classified as parts or accessories.

A bicycle chain is

•    essential for propulsion; without it the bicycle cannot function.

•    a core mechanical component forming part of the bicycle's drive system.

Therefore, it is classified as a part. In the HS, it is classified under HS 7315.11 – Roller chain for bicycles.

A bicycle water-bottle holder, on the other hand,

•    enhances convenience but is not essential to riding,

•    and the bicycle operates fully without it, as it adds only optional functionality.

Therefore, it is classified as an accessory. In the HS, it falls under HS 8714.99 – Other parts and accessories of bicycles and other cycles.

Note: Water-bottle holders fall under 8714 because this heading explicitly covers parts and accessories of bicycles. An accessory can only be classified under a provision that expressly includes accessories.