Recommended Replacement Intervals for Car Parts

When we use a car for a certain period, various parts will begin to wear out.

Therefore, to ensure safe driving, we should replace parts when they reach the end of their lifespan, even if they haven’t failed yet.

  • น้ำมันเครื่อง / ไส้กรองน้ำมัน



























The function of this oil is to lubricate the various parts within the engine, ensuring smooth operation without any issues. The oil change interval typically ranges from 5,000 to 20,000 kilometers, depending on the type of oil used. Additionally, if you notice the oil has turned black, it indicates that the oil has deteriorated and should be replaced immediately.

  • Battery

There are both dry and wet batteries available. Dry batteries are suitable for those who prefer minimal maintenance, although they are more expensive than wet batteries. Wet batteries require regular topping up with distilled water to maintain proper levels. It’s recommended to check and monitor them every month. The lifespan of a wet battery is typically around 2-3 years.

  • ไส้กรองอากาศ

This filter is responsible for trapping foreign particles that come in with the air, preventing them from entering the car’s engine. If these particles get into the engine, they can cause blockages, reducing the engine’s efficiency and combustion performance. An easy way to extend the life of the air filter is to clean it by blowing out the dirt every 3,000 – 5,000 kilometers. It should be replaced after approximately 20,000 kilometers or one year of use.

  • Brake pads

Counted as one of the most crucial parts, brake pads are vital for ensuring our safety while driving. Therefore, special attention must be given to this component. The recommended interval for replacing brake pads is between 50,000 to 70,000 kilometers. Additionally, if you hear unusual brake noises, it’s another sign indicating that it’s time for a replacement. Continuing to use them beyond their lifespan could potentially damage the brake discs.

  • Spark plug

This part is also considered quite important, as any deterioration can significantly affect the engine’s performance or cause misfires while driving. It’s advisable to replace the spark plugs every 40,000 kilometers of driving.


  • Gear Oil / Gear Oil Filter

The car’s gearbox is constantly in motion. If the gear oil or the gear oil filter wears out, it may cause gear slipping in the car’s transmission. Therefore, we should replace them every 20,000 – 40,000 kilometers.

  • Various bulbs around the car

Inspecting various bulbs around the car is essential. Whether it’s the headlights (low beam, high beam, fog lights), all four corner turn signals including side markers, tail lights, brake lights, reverse lights, fog lights, etc., it’s important to check if all bulbs are functioning properly. Halogen filament bulbs are more prone to failure compared to Xenon and LED types. Driving through rough terrain can accelerate bulb failure. Therefore, regular inspection and prompt replacement of burnt-out bulbs are advisable.

  • Wiper blades.

Wiper blades are parts that are prone to wear and tear easily. This is because they often come into direct contact with sunlight, leading to rapid deterioration. It is recommended to replace them every year, especially when entering the rainy season.

  • Timing belt

“Timing belt” is one of several belts in a typical engine that helps drive various components to ensure the engine runs smoothly. These components include the timing belt, air conditioning belt, power steering belt, water pump belt, and others, depending on the car model. However, if the timing belt, which is the main belt of the engine, breaks, it can cause severe damage to the engine. The recommended interval for replacing it is approximately every 100,000 kilometers.


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