Ford Fiesta Mk8 Puma Mk2 Alarm Siren Horn Anti Theft Signal H1BT-19N217-AA

Ford Fiesta Mk8 Puma Mk2 Alarm Siren Horn Anti Theft Signal is an original acoustic security system component designed for modern Ford models. The siren is responsible for generating a clear warning signal, working in conjunction with the vehicle's factory alarm system. Thanks to its OEM design, it ensures proper integration with the car's electronics and stable operating parameters.

Specifications and technical data

• SKU: H1BT-19N217-AA
• Mark: Ford
• Condition: Used
• OEM Part Number: H1BT-19N217-AA
• Substitutable numbers: H1BT-19N217-AA, H1BT19N217AA, 2545378, H1BT-19N217-AB, H1BT19N217AB
• Part type: Electric Horn
• Category: Horns

Purpose and function of the alarm siren

The alarm siren in the Ford Fiesta Mk8 and Ford Puma Mk2 is a key element of the vehicle's security system. It is responsible for generating a loud, characteristic sound signal in the event of a security zone breach, unauthorized vehicle entry, or attempted theft. The original design ensures:

• proper cooperation with the factory Ford alarm module,
• appropriately selected volume and tone characteristics,
• stable operation under typical road operating conditions.

By using an OEM solution, the alarm system maintains factory operating parameters, which translates into a predictable vehicle response in emergency situations.

Design and fitment for Ford Fiesta Mk8 / Puma Mk2

The siren has been designed specifically for the platform used in the Ford Fiesta Mk8 and Ford Puma Mk2, which facilitates installation in the original mounting points. Appropriate electrical connectors and housing geometry allow for:

• trouble-free connection to the existing wiring harness,
• maintenance of seal integrity and protection against external factors,
• reduction of vibrations and unwanted acoustic resonances.

Such fitment minimizes the risk of installation errors and eliminates the need for wiring modifications, which is particularly important for components responsible for safety.

Horns category – role in the security system

The alarm siren belongs to the Horns category, which includes components responsible for generating warning signals in the vehicle. In modern designs, it serves as a specialized sound source that works with the body electronics. In practice, this means:

• dedicated acoustic characteristics for the alarm mode,
• designed cooperation with sensors and monitoring modules,
• maintaining consistency with other comfort and safety functions.

An original element from this group allows for maintaining the consistency of the entire system, which is important both for user comfort and for the proper operation of security features.

Characteristics of the used part

The offered alarm siren is a used part, sourced from vehicle dismantling. This type of OEM component is often chosen as a reasonable alternative to new replacements because:

• it maintains Ford's factory quality standards,
• it is structurally compatible with the vehicle's original installation,
• it allows for reducing repair costs while maintaining an appropriate level of reliability.

For users looking for a solution compliant with factory specifications, this is a practical way to restore full functionality to the alarm system without interfering with the installation design.

Support with selection and additional information

Before purchasing, it is worth comparing the siren markings with the element currently installed in the vehicle or verifying them by the part number in the Ford catalog to ensure full compatibility with the specific equipment version. If in doubt, checking the alarm system configuration in the given car model may also be helpful.

If you are planning a comprehensive repair or upgrade of the signaling zone in your Ford and need other elements from the same group, such as horns, control modules, or additional acoustic transducers, check the available parts in the Ford Horns category.

For drivers interested in a broader approach to repairs using original used components, it is worth reading the article Humming differential? Find out why a used OEM drive axle is a better investment than an uncertain replacement., which shows the advantages of using factory parts from dismantling in the context of durability and service cost-effectiveness.