A car is a complex mechanism consisting of tens of thousands of parts, each of which performs a strictly defined function. For a vehicle owner, especially a beginner, orienting in this variety can be a real challenge. Understanding that, What spare parts are in the carIt is necessary not only for professional repair, but also for basic communication with masters in the service or sellers in the market.
Knowledge of the nomenclature of nodes allows you to avoid deception, overpayment for unnecessary services and purchase of inappropriate parts. In this article, we will break down the basic systems of the car, classify components, and give clear names to the elements that most often require attention during operation. This is a fundamental base, without which competent maintenance is impossible.
Engine and gas distribution system
The heart of any car is combustion-engine (Or electric motor, but the classification of spare parts is different.) This is where the energy of the fuel is converted into mechanical motion. The main nodes here are the cylinder block, the cylinder block head (GBC) and the crank-shaft mechanism (CSM). Without the serviceability of these components, the movement of the car is impossible in principle.
The most important role in the operation of the motor plays gas-distribution (GRM). It is responsible for timely opening and closing of valves, ensuring the intake of the fuel mixture and the release of exhaust gases. The key elements here are the camshaft, valves, pushers and the timing drive (belt or chain). Breaking the belt of the timing often leads to major repairs, so the condition of these spare parts should be monitored first.
- 🔧 The piston group: pistons, rings, fingers - ensure the tightness of the combustion chamber.
- ⚙️ Valve cover and gasket - protect the upper part of the engine from dust and loss of oil.
- 🌡️ Thermostat and pump - regulate the temperature regime, not allowing the engine to boil.
Modern engines are also packed with electronics. Crashshaft position sensors, lambda probes and nozzle (in injection systems) operate with micron precision. Their failure leads to loss of power and increased fuel consumption. It is important to understand that even the most expensive part of poor quality can disable the entire power unit.
⚠️ Warning: When replacing the belt, always change the tension roller and pump (if it is given with a belt). Saving on these accompanying parts can lead to the break of the new belt after several thousand kilometers.
What's "engine knocked"?
"The engine knocked" is a slang expression meaning critical wear or destruction of the crankshaft liners and rod necks. This is due to oil starvation or the use of poor-quality oil. Repair in this case is often unprofitable and requires replacement of the engine as a whole or its capital restoration with the waste of the block.
Transmission and torque transmission
Once the energy is received in the engine, it must be transferred to the wheels. It's what he's doing. transmission. In the classical scheme, it consists of a clutch, a gearbox (CPT), a driveshaft (for rear-wheel drive cars), a main gear and a differential. Each element here experiences tremendous loads, especially when driving aggressively.
The clutch is used for short-term disconnection of the engine and transmission during gearshift. The main wearable parts here are the clutch disc, basket and squeeze bearing. The transmission, whether it be mechanics (ICSW), automatic (DISTRIBUTION) or the variator (CVT), contains a variety of gears, frictions and hydraulic units requiring regular oil change.
In front-wheel drive cars, torque is transmitted to the wheels through driveshaft (half axles) The shafts are hinged at the ends of the shafts of equal angular velocities (SRUSS) which allow the wheel to rotate and to be rotated at the same time. SRUS dust is an expendable material, the rupture of which leads to a rapid failure of the hinge itself.
- 🚗 Flywheel - a massive disc, smoothing the jerks of the engine and transmitting rotation to the clutch.
- 🔗 The driveshaft - transfers rotation from the checkpoint to the rear axle (in rear-wheel drive cars).
- 🛢️ PPC oil seals prevent transmission oil from leaking out of the box.
Chassis: suspension and steering
Comfort and safety of movement directly depend on the state of running-piece. It is the suspension that takes on all the blows from the road surface. The main elements here are shock absorbers, springs, levers and Silent blocks. The shock absorbers dampen the vibrations, and the springs hold the weight of the body.
The steering allows you to set the direction of movement. In modern cars, it is used hydropower (GUR) or power-enhancing (ERM). Key spare parts are steering rack, steering rods and tips. The backlash in these nodes makes control unpredictable and dangerous at high speeds.
| Name of the spare part | Function | Resource (exemplary) | Signs of wear and tear |
|---|---|---|---|
| Shock absorber | Cushioning of body fluctuations | 60,000-100. km | Knock, swing, oil leak |
| Silentblock | Destroying vibrations in levers | 40,000-800,000. km | Screaming, knocking on the passage of irregularities |
| Steering tip | Transferring force to the turning fist | 30-60 thousand. km | Knock, back wheel, uneven tire wear |
| Stack bearing | Rotation of the wheel | 80-150 thousand. km | The buzzing speed-intensifies |
Special attention deserves brakeIt is formally related to safety, but is structurally related to the running. Brake discs, pads, calipers and brake cylinders should always be in perfect condition. Wear of brake discs below the minimum thickness can lead to their destruction during emergency braking.
Check the condition of the anthers of shock absorbers and breakers at each change of wheels. Torn anther leads to rapid wear of the shock absorber rod and dirt, which reduces the service life of an expensive part by 2-3 times.
Body elements and optics
The body is not just a “shell” of the car, but a load-bearing structure to which all units are attached. Spare parts of the body are divided into hinged (doors, trunk lid, hood) and load-bearing (spargeons, racks). In an accident, hinged elements are primarily affected, which are easier to replace.
The most important elements also include optics. Headlights, turn signals, stop lights and fog lamps provide visibility and indicate the dimensions of the car in the dark. The plastic headlights get cloudy over time and the lamps burn out, requiring replacement.
- 🚘 Bumper (front / rear) - takes the first blow in a collision, protects the body.
- 🚪 Moldings and pads are decorative elements that hide gaps and protect against scratches.
- 💡 Lamps and LED units are light sources that require periodic replacement.
Glass and mirrors are another category of frequently replaced parts. The windshield can crack from hitting a stone, and the side mirrors often suffer when parking.
⚠️ Warning: When buying used body parts (doors, wings), always check the geometry and the presence of hidden corrosion. Rust under the paint layer can appear a month after installation.
Electricity and ignition system
A modern car is impossible to imagine without a complex electrical network. The battery depends on the start of the engine and the operation of all systems in a dead state. Generator Charges the battery while driving. Failure of any of these elements leaves the driver immobilized.
In gasoline engines, the ignition system is critical. Ignition plugs, ignition coils and high-voltage wires (if any) provide a spark to ignite the mixture. Poor-quality candles can lead to "troiling" of the engine and burnout of the catalyst.
☑️ Diagnostics of Electrics
Engine control unit (EBOU) is the car's brain. It reads readings from dozens of sensors and controls nozzles, ignition and other systems. Although the ECU rarely fails on its own, wiring problems or power surges can damage it.
Filtration and liquid systems
For a long life of the car, clean working fluids are necessary. Filters are the consumables that change most often. Oil filter delays the wear products of the engine, the air filter does not let dust into the cylinders, and the fuel filter protects the nozzles from dirt in the tank.
The cabin filter (air conditioner filter) is responsible for the purity of the air that passengers breathe. Clogged cabin filter reduces the efficiency of the stove and air conditioner, and can also become a source of allergens and unpleasant odor.
Regular replacement of technical fluids (motor oil, antifreeze, brake fluid) and filters is the cheapest way to extend the life of a car. Ignoring these regulations leads to accelerated wear of expensive nodes.
Saving on filters and oils is a false saving. The cost of oil replacement is ten times less than the cost of overhauling the engine or replacing fuel equipment.
Frequently Asked Questions (FAQ)
How to determine the original part or analogue?
Original parts have the logo of the car manufacturer (VAG, Toyota, BMW) and their own article. Analogues (substitutes) are produced by third-party firms (Bosch, Mann, Febi) and have their own catalog numbers. Often the same factory makes parts under the brand of the automaker and under his own, but the original will cost more because of logistics and brand.
What is a cross-parts number?
Cross numbers (analogues) are parts numbers from other manufacturers that fit in the same place. For example, an oil filter from Toyota may have a cross number from MANN or Filtron. Knowing cross-numbers allows you to find a more affordable option without losing quality.
Why can't you mix different brake fluids?
Brake fluids of different standards (DOT-3, DOT-4, DOT-5) have different chemical bases. Mixing liquids on a glycolic and silicone basis can lead to precipitation, boiling of the system and brake failure. Always use the liquid recommended by the manufacturer.
Where to find the names of spare parts for my car?
The best source is the electronic spare parts catalogues (EPCs) by the vehicle’s VIN code. Also, the names can be found in the instructions for operation or on specialized sites-aggregators, where when entering a car model, a diagram of nodes with details numbers is issued.