<ul><li>Braking system components like pads, rotors, and calipers should never be bought used as internal flaws may not be visible, risking safety on the road.</li><li>Airbags, once deployed or damaged, should not be reused as their sensors, control modules, or wiring could be compromised.</li><li>Timing belts and chains are critical engine components that can fail without warning, leading to severe engine damage.</li><li>Used Electronic Control Units (ECUs) may lack compatibility and reliability, causing potential software glitches or internal damage.</li><li>Fuel injectors are delicate components that may clog or wear out over time, requiring full testing before installation for optimal performance.</li></ul>

5 Automotive Parts You Should Never Buy Used

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