🚘 Genuine Nissan Navara D40 Pathfinder R51 Alarm Siren Backup Battery Module 28487-EB300 OEM

This is a genuine Nissan anti-theft alarm siren backup battery module manufactured by Cobra AT in Italy. This OEM security component forms part of the factory vehicle alarm system and features an integrated rechargeable backup battery designed to activate the siren even if the vehicle’s main battery is disconnected.

🔑 Key Product Details (Important Compatibility Check!)
Part Type:
Alarm Siren Backup Battery Module / Anti-Theft Siren

Manufacturer:
Cobra AT

Genuine Nissan OEM Component

OEM Part Number:
28487-EB300

Alternative Format:
28487 EB300

Description on Unit:
CONT - ASSY SIREN

Vehicle Platforms:
• Nissan Pathfinder R51
• Nissan Navara D40

Typical Model Years:
• Pathfinder R51: 2005–2013
• Navara D40: 2005–2015

Production Origin:
Made in Italy

Supplier Serial Code:
4B7896N3C

Material Composition:

PBT<
(Polybutylene Terephthalate)

Internal Battery Type:
Rechargeable Ni-MH Battery

Functions:
• Factory anti-theft alarm siren
• Backup battery emergency activation
• Security system warning output
• Battery disconnect protection
• Intrusion alarm system support

Mounting Orientation:
Install upright as indicated by the “UP” directional marking on the housing.

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⚠️ Common Failure Symptoms
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Typical signs of a failing alarm siren module include:

• Random alarm activation
• Alarm sounding unexpectedly overnight
• Weak or silent siren output
• Hazard lights flashing without siren sound
• Battery drain issues
• Internal battery leakage/corrosion

These faults commonly occur when the internal rechargeable Ni-MH battery deteriorates over time due to engine bay heat cycles.

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🚗 Vehicle Compatibility
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Compatible with selected:
• Nissan Navara D40
• Nissan Pathfinder R51

⚠️ Compatibility may vary depending on:
• Alarm system specification
• Vehicle production year
• Security system version
• Connector configuration

Please compare:
• Part number
• Connector layout
• Housing design
• Existing siren specification

before purchasing.

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📦 Condition
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Good Used Condition.

• Genuine OEM used component
• Housing and connector inspected
• Removed from donor vehicle
• May show minor cosmetic wear or marks consistent with age and previous use

Please inspect all photos carefully for exact condition.

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⚠️ Important Information
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Professional installation may be recommended for alarm/security-related components.

Please ensure correct mounting orientation to help prevent moisture ingress.

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📦 Shipping & Dispatch
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✔ Fast UK Shipping

✔ Secure Protective Packaging

✔ Tracked Courier Service

✔ Same-Day Dispatch Available

International shipping available through eBay Global Shipping Programme.

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💯 Buy With Confidence
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✔ Genuine Nissan OEM Part

✔ Genuine Cobra AT Component

✔ Fully Inspected

✔ 30-Day Return Policy

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