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Most Commonly Replaced Car Parts

Over time, various components within a vehicle undergo wear and tear, which is a natural consequence of regular usage. These components can become less efficient, compromising the overall performance and safety of the vehicle. Here are the most commonly replaced parts.


One prevalent issue with car batteries is sulfation, where lead sulfate crystals accumulate on the battery plates, hindering efficient chemical reactions. Another problem is battery corrosion, resulting from acidic leaks and causing poor electrical connections. Low electrolyte levels can also affect the battery’s ability to function optimally.

Several signs indicate the need for battery replacement. One notable indicator is slow engine cranking, suggesting a weakened battery unable to provide sufficient power to start the car. Dimming headlights and interior lights during vehicle operation indicate a dwindling charge. Furthermore, a foul smell or visible corrosion around the battery terminals calls for immediate attention.

Exterior Lights

One common problem is a burnt-out bulb, which results in a lack of illumination. This issue can be identified by inspecting the lights regularly and noticing any dimness or complete darkness. Flickering lights are another sign of a potential problem, often caused by loose connections or a failing bulb. If the lights become excessively dim over time, it might suggest aging bulbs that need replacement.

Drivers should also be attentive to any abnormal coloration in the lights, as it may indicate a damaged lens or water infiltration. Cracked or broken lenses can obstruct light output and must be replaced promptly. Corrosion on the bulb socket or wiring can lead to poor electrical contact, affecting light functionality.


One of the primary signs of a failing alternator is dimming or flickering headlights. When the alternator fails to provide a steady flow of electricity, the headlights may appear dimmer or fluctuate in brightness. Another indicator is a weak or dead battery. If the alternator isn’t functioning properly, it fails to recharge the battery, causing it to lose power quickly.

Furthermore, squealing noises from the engine compartment could signify a damaged alternator belt. The alternator relies on a belt to rotate and generate electricity. A frayed or loose belt can lead to charging issues. Difficulty starting the vehicle or stalling while driving are other red flags.

City Auto Wreckers is the go-to place for superior quality used car parts in Chicago and surrounding areas. Our friendly, passionate, and knowledgeable team is always ready to assist with any questions or concerns. Contact us for junkyard and salvage yard services.