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Electrical gremlins are cheap to fix and expensive to guess at. Shop car batteries, alternators, starters, sensors, relays and wiring below — quality brands, verified fitments, and prices that make fixing it right the obvious choice.
A car that won't start is usually one of three things: battery (clicks, dim lights), starter (single clunk, no crank) or alternator (starts with a jump, dies later). A free load test at most parts stores — or a $20 multimeter from our tools section — settles it before you spend.
It's printed on your current battery's label, or select your vehicle above and we'll filter to batteries with the right size, terminals and cold-cranking amps.
If a jump-start gets you going but the car dies or won't restart later, suspect the alternator. If lights are dim and cranking is slow from cold, start with the battery — it's the cheaper test.
For engine-management sensors (O2, MAF, crank position), stick with OEM or the original supplier brand — cheap sensors cause more check-engine lights than they cure.
