Standard Motor Products Ignition Lock and Cylinder Switch US-555
Fits 2003–2005 models
$342.95
In stock
Body Electrical
Ignition Lock Assembly
An ignition lock assembly is the keyed lock you turn to start the vehicle, often sold with keys and mounting hardware. We carry 32 ignition lock assemblies from $8 to $705 for vehicles from 1967-2019, from Standard Motor Products, Genuine, Beck Arnley and AC Delco, with fits for the Honda Civic and Accord, Ford F250 and Chevrolet Impala.
Shop ignition lock assembly by vehicle
Standard Motor Products Ignition Lock and Cylinder Switch US-286
Fits 1996–2000 models
$76.43
In stock
AC Delco Ignition Lock Assembly W0133-1884439 for Chevrolet S10
Fits 1985–1990 models
$50.58
In stock
Signs the lock is wearing out
A key that sticks, turns only with jiggling, will not turn at all, or will not come out are common signs. The lock may also turn without starting the vehicle if the switch behind it has failed. Worn keys can add to the problem, so try a spare key first.
On some vehicles a worn lock lets the key be removed in the wrong position, which can drain the battery.
What comes in the box
Assemblies vary. Some include the lock cylinder with 2 keys, some add screws and a mounting bracket, and some include the ignition switch. Read the contents so you know whether you will need any extra parts.
A new lock comes with new keys that will not match your door locks. Some owners have the new lock rekeyed to match their existing key.
Fitment and security systems
Many vehicles use keys with a transponder chip for the immobilizer. A new lock may need keys programmed to the vehicle before it will start. Check your owner's manual or a dealer for the procedure.
Match year, trim and transmission in the fitment table. Disconnect the battery and follow the airbag service steps before working on the steering column. Ask a dealer or locksmith if you are unsure which key type you have.
Ignition Lock Assembly questions
Will a new ignition lock work with my old key?
Usually not, unless it is rekeyed. New locks come with their own keys. A locksmith can rekey the cylinder to match your door key. Keep your old keys until the new lock is working.
Do I need to program keys after replacing the ignition lock?
If your vehicle uses transponder keys, the new keys may need programming to the immobilizer before the engine will start. Check the procedure for your vehicle.
Why will my key not turn in the ignition?
Common causes include a worn key, a worn lock cylinder, or steering wheel lock pressure. Turn the wheel slightly while turning the key, and try a spare key.