Will these covers fit over my factory handles without any prep?

Yes, they're designed to slip directly over your OEM door handles. No trimming or adhesive needed — just slide and done.

Do these handles lock and unlock with the factory mechanism?

These are covers only. They sit over your factory handles, so all locking and unlocking operates normally underneath.

Will the chrome finish hold up to car washes and winter salt?

ABS chrome resists UV and mild corrosion, but prolonged salt exposure will degrade any finish. Regular washing helps extend the look.