Automotive Locks, Ignition Cylinders & Mailbox Locks

Shop replacement locks and service components for professional automotive and general locksmith work. Noble Key Supply carries automotive ignition lock cylinders, car door locks, ignition housings, lock sets, mailbox locks, and related hardware for repairing damaged or worn lock systems.

Our collection includes coded and uncoded lock cylinders for a variety of vehicle makes and models. Locksmiths can also find service packs and installation components for completing dependable repairs without replacing more of the locking system than necessary.

Automotive Ignition Lock Cylinders

An ignition lock cylinder is the mechanical component into which the driver inserts and turns the vehicle key. Internal wafers must align with the key cuts before the cylinder can rotate and operate the ignition assembly.

Years of regular use can wear the key, wafers, springs, face cap, and other internal components. Ignition locks can also be damaged by forced entry attempts, foreign objects, broken keys, or the use of a badly worn key.

Common symptoms of ignition lock trouble include:

• The key will not enter completely
• The key becomes stuck in the ignition
• The cylinder will not turn
• The key must be moved or lifted to operate the ignition
• The ignition turns with excessive resistance
• The key can be removed in an incorrect position
• A properly cut key no longer operates the cylinder
• The face cap or housing is visibly damaged

These symptoms can have several causes. Inspect the key, lock cylinder, ignition switch, steering-lock components, and surrounding housing before selecting a replacement.

Coded Ignition Locks

A coded ignition lock arrives with its mechanical combination already established. Depending on the product, the package may include one or more matching mechanical keys.

Coded locks can provide a convenient replacement when matching the customer’s existing key is unnecessary or when the original cylinder cannot be decoded and rebuilt. However, installing a lock with a different combination can leave the vehicle with separate keys for its ignition and doors.

The mechanical key supplied with a coded lock may not contain the transponder required to start an immobilizer-equipped vehicle. A compatible transponder key may still need to be cut, programmed, or otherwise prepared by an automotive locksmith.

Always review the listing to determine exactly what the coded lock includes.

Uncoded Ignition Lock Service Packs

Uncoded service packs allow a qualified locksmith to establish the mechanical combination during installation. In many applications, the cylinder can be keyed to match the customer’s existing vehicle key.

This can preserve one-key convenience for the ignition and door locks. It may also be useful when the original cylinder is too damaged to reuse but the existing key code is still available.

An uncoded service pack may include:

• Ignition lock cylinder
• Wafers or tumblers
• Springs
• Face cap
• Retainers
• Pawls or tailpieces
• Installation hardware

Included components differ between products. Some service packs require the original pawl, face cap, actuator, or other hardware to be transferred from the old lock.

Automotive Door Lock Cylinders

Door lock cylinders provide mechanical entry when a remote or proximity key is unavailable, the key battery is depleted, or the vehicle has lost electrical power. Even on vehicles that are normally unlocked electronically, a functional mechanical door lock remains important.

Noble Key Supply carries replacement car door locks for select driver-side, passenger-side, trunk, hatch, and other vehicle applications. Options may include coded cylinders and uncoded service packs.

Door lock compatibility may depend on:

• Vehicle year, make, and model
• Driver or passenger side
• Front or rear position
• Door, trunk, or hatch location
• Keyway and key-blank family
• Pawl or tailpiece design
• Linkage configuration
• Cylinder diameter
• Retainer style
• Factory equipment

A lock intended for the left-hand driver door may not fit the right-hand passenger door. Confirm the position and orientation shown in the product listing before ordering.

Automotive Lock Sets

A coordinated automotive lock set can be useful when multiple cylinders are damaged, missing, or operating with different keys. Depending on the application, a set may include an ignition cylinder, door cylinders, trunk lock, keys, or related installation hardware.

The included components vary significantly between sets. Check the product description rather than assuming every opening on the vehicle is included.

When installing a lock set on an immobilizer-equipped vehicle, remember that the mechanical lock combination and electronic authorization are separate systems. A key may turn the new lock but still require the correct transponder and programming before it can start the vehicle.

Ignition Lock Housings and Switches

Some ignition problems originate outside the cylinder. A damaged lock housing, actuator, electrical ignition switch, or steering-lock component can create symptoms that resemble a failed lock cylinder.

The collection includes select ignition lock housings and ignition switches for supported vehicles. These parts should be matched by the vehicle application and manufacturer part number.

Before replacing a component, determine whether the failure involves:

• The mechanical key
• Internal lock-cylinder wafers
• The cylinder retainer
• The ignition housing
• The actuator mechanism
• The electrical ignition switch
• The steering-lock assembly
• The vehicle’s immobilizer system

Accurate diagnosis helps prevent the unnecessary replacement of a functional cylinder or switch.

Ignition Lock Hardware and Service Components

A complete ignition repair may require small pieces of application-specific hardware. Noble Key Supply carries select service components such as standard and reverse-thread ignition-lock shear-head bolts.

Shear bolts are designed so their heads break away at a specified point during installation. Standard and reverse-thread versions are not interchangeable. Verify the required thread direction, size, and vehicle application before installation.

Other locks may require the reuse of an original pawl, tailpiece, face cap, retainer, or linkage component. Read every application note carefully before disassembling the existing lock.

Replacement Locks for Popular Vehicle Manufacturers

The Locks collection includes products for select vehicles from manufacturers such as:

• Ford, Lincoln, and Mercury
• Chevrolet, GMC, Buick, and Cadillac
• Chrysler, Dodge, Jeep, and Ram
• Honda and Acura
• Toyota and Lexus
• Volkswagen
• Nissan and Infiniti
• Hyundai and Kia
• Mazda
• Subaru
• Other supported automotive brands

Coverage varies by model and year. A lock that fits one vehicle from a manufacturer may not fit another vehicle using a similar key system.

Use the year, make, and model search when available, then verify the detailed product specifications before ordering.

ASP Automotive Locks and Service Packs

Many of the automotive locks in this collection are supplied by ASP, a recognized manufacturer of replacement automotive lock components. Available ASP products may include coded ignition cylinders, uncoded service packs, door locks, lock hardware, and other application-specific repair parts.

ASP part numbers help distinguish between locks that may appear similar. Products can also list replacement or alternate numbers that correspond with older ASP numbers or other catalog references.

Compare all available identifiers, including:

• ASP part number
• Alternate part number
• Replacement part number
• Original equipment reference
• Vehicle application
• Key system
• Product notes

A similar appearance or matching vehicle manufacturer is not enough to confirm compatibility.

Mailbox Locks and Replacement Cam Locks

In addition to automotive products, this collection includes replacement mailbox locks for residential and commercial service calls. Mailbox locks are commonly replaced after keys are lost, a tenant changes, the cylinder becomes corroded, or the lock is damaged.

Available universal mailbox lock packages may include:

• Replacement cam lock
• Two operating keys
• Multiple replacement cams
• Spring mounting clips
• Hex-nut mounting hardware

The cam is the flat metal component that rotates behind the mailbox door to secure it. Cam length, shape, offset, rotation, and mounting style affect whether the lock will operate correctly.

Check the dimensions and hardware configuration before choosing a replacement. A universal mailbox lock may fit many common applications, but it is not guaranteed to fit every individual mailbox or cluster-box design.

Mailbox lock work must be performed with the property owner’s authorization and in accordance with any rules governing the specific mailbox system.

Choosing Between Coded and Uncoded Locks

The correct option depends on the vehicle, the customer’s needs, and the condition of the existing system.

A coded cylinder may be appropriate when:

• A ready-to-install mechanical combination is preferred
• Matching the existing key is unnecessary
• The original key code is unavailable
• The supplied key will be used as a separate mechanical key

An uncoded service pack may be preferable when:

• The replacement should match the existing key
• One-key operation needs to be maintained
• The locksmith has the key code or a usable original key
• The application requires on-site assembly or pinning

Always verify whether the listing is for a complete coded lock, an uncoded service pack, a housing, a switch, or an individual component.

How to Select the Correct Replacement Lock

Before ordering an automotive or mailbox lock, confirm:

1. Product type
2. Year, make, and model
3. Vehicle trim or body style when applicable
4. Ignition, door, trunk, or hatch position
5. Driver-side or passenger-side orientation
6. Keyway and key-blank family
7. Coded or uncoded configuration
8. ASP or manufacturer part number
9. Alternate and superseded part numbers
10. Pawl, cam, or tailpiece requirements
11. Face-cap and ignition style
12. Standard or reverse-thread hardware
13. Included keys and components
14. Components that must be reused
15. Special installation notes

Pay close attention to exclusions. Certain ignition cylinders may be designed only for vehicles with a specific thumb-turn, key-turn face cap, sidebar system, or key style.

Mechanical Locks and Vehicle Immobilizers

Replacing an ignition cylinder addresses the mechanical portion of the system. It does not automatically program a vehicle’s immobilizer or authorize a new transponder.

For an immobilizer-equipped vehicle, the finished key may need two separate forms of preparation:

• Mechanical cutting to operate the lock cylinder
• Electronic programming to authorize vehicle starting

Remote buttons may also require a separate pairing procedure. Confirm the key, transponder, remote, and programming requirements before returning the vehicle to the customer.

Professional Automotive Lock Repair

Automotive lock service requires careful diagnosis and accurate application matching. Improper disassembly or installation can damage the cylinder, ignition housing, steering column, door linkage, or surrounding trim.

Professional locksmiths should inspect the complete system, follow current service information, and test the finished repair before completing the job. After installation, confirm that:

• The key enters and withdraws smoothly
• The cylinder turns without binding
• Every intended lock position operates
• The steering lock functions correctly when applicable
• The key cannot be removed in an improper position
• Door linkage operates reliably
• The vehicle starts when an authorized key is used
• All supplied or reused hardware is secure

Shop Locks at Noble Key Supply

Browse automotive ignition locks, car door lock cylinders, lock sets, service packs, ignition components, mailbox locks, and related repair hardware at Noble Key Supply. Our collection gives professional locksmiths access to coded and uncoded solutions for a wide range of authorized lock-repair jobs.

Compare the part number, vehicle application, lock position, key system, and installation notes before ordering to ensure you select the correct component.