The Splendor iSmart Gear Selector Standard refers to the gear selector used in the Hero Passion motorcycle’s gear-shifting system. This part is typically the standard, non-OEM (Original Equipment Manufacturer) or possibly an aftermarket part designed to fit and function in place of the original gear selector. It performs the same role in shifting the gears within the motorcycle’s transmission system.

The Splendor iSmart Petrol Filter typically refers to a fuel filter used in older versions of the Hero Passion motorcycle. The primary role of the petrol filter in any vehicle is to prevent dirt, rust, and other contaminants from entering the fuel system, which could potentially damage the engine or affect its performance.

It seems like you're referring to a "Splendor iSmart Neutral Switch." In automotive or motorcycle terminology, a neutral switch is a component in the transmission system that detects when the vehicle is in neutral gear. It’s often part of the gear shift mechanism and is used for functions like starting the engine, activating indicator lights, or ensuring safety by preventing the engine from starting in gear. If you're referring to a specific model (such as the Passion model, which might be a type of motorcycle or vehicle), this switch would typically play a role in starting and safety systems. Could you clarify which type of vehicle or machine you're referring to, or if it's related to a specific model (e.g., a motorcycle or car)? That would help provide more targeted information!