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22 Components of Manual Transmission and Their Functions!

22 Components of Manual Transmission and Their Functions!

4 March 2026 | MyProtection News Jakarta

Car transmissions are divided into two types, which are manual and automatic. Unlike automatic transmissions, manual transmissions consist of more complex components.

The main difference in manual transmissions lies in the way the gears are shifted and the pedals, where the driver must manually operate them to change gears.

Therefore, the components of manual transmissions are generally more complicated compared to those of automatic transmissions. What are these components and their functions? Let’s take a look!

22 Components of Manual Transmission and Their Functions!

komponen transmisi manual

1. Transmission Input Shaft

The transmission input shaft is a key component of manual transmissions that connects to the clutch. These components of a manual transmission have the function to rotate the gears in the gearbox.

2. Transmission Gears

The next component is the transmission gears, with their function to convert the engine’s input power into torque output.

This allows the driver to adjust the vehicle’s speed and rotation power according to road conditions.

3. Synchronizer or Adjustment Gear

The synchronizer or adjustment gear functions to equalize the rotational speed between transmission gears, ensuring smooth and safe gear shifts even while the vehicle is moving.

4. Shift Fork

The shift fork functions to move the gears on the shaft, enabling the driver to shift gears as needed.

It serves as the link between the gear lever and the gear mechanism inside the manual transmission.

5. Shift Linkage

The shift linkage ensures that the movement of the gear lever is translated into movement in the shift fork, allowing gear changes to occur.

In short, this component effectively transmits the driver’s commands to the gearbox.

6. Gear Lever or Shift Stick

The gear lever, also called a shift stick, allows the driver to control and shift gears based on road conditions and driving needs.

This component gives the driver direct control over gear changes while driving.

7. Transmission Case

The transmission case protects internal components from dirt and external impacts.

It also serves as a container for the transmission of oil and houses critical parts such as the bearing, the input shaft, and the output shaft.

8. Output Shaft

The output shaft transmits rotational power from the transmission system to the propeller shaft, ultimately driving the wheels.

Additionally, it can serve as a mounting point for the gear stick in a vehicle.

9. Bearings

Bearings in manual transmissions help reduce friction between components such as the input shaft, output shaft, and counter gear.

This ensures smoother operation, minimizes wear and heat, and improves efficiency.

10. Counter Gear

The counter gear transmits power from the input shaft to the output shaft. It allows the transmission to adjust the correct gear ratio to match vehicle speed and engine torque.

This component plays a crucial role in enabling the car to change speed according to the driver’s needs.

In addition to the components above, manual transmissions also consist of various other parts such as the reverse gear, hub slave, speedometer gear, transmission housing, transmission oil seal, control rod, shift rod end, clutch hub sleeve, hub sleeve, shifting key, spring key, and interlock system.

All these components work together to ensure the manual transmission functions are effective and reliable.

*PT Lippo General Insurance Tbk is licensed and supervised by Financial Services Authority (OJK)

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MyProtection is one of the pioneer portals for purchasing health insurance and general insurance online which can be accessed via website and application platforms since 2017.
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