Universal Parts 48V 25/25W BAY15d Headlight Bulb

This Universal Parts 48V headlight bulb restores bright white light to a compatible electric vehicle's headlight with a blue-coated glass envelope and a 25/25W dual-filament design. Its 15mm BAY15d bayonet base uses two bottom contacts and offset locating pins to fit the matching socket, making it a straightforward replacement when your original bulb's electrical and physical specifications match.

Voltage note: The bulb is marked 56V but is intended for use in compatible 48V electric-vehicle lighting systems. Match the voltage supplied to the headlight, not just the vehicle's battery-pack voltage.

Key Features

• Bright white output: Blue-coated glass produces white headlight illumination.
• Dual-filament design: Two 25W filaments support the matching headlight's two-circuit operation.
• BAY15d base: Bayonet mounting with offset side pins and two bottom contacts suits the corresponding socket.
• 48V application: Intended for matching electric-vehicle lighting systems despite the 56V bulb marking.

Technical Specifications

• Brand: Universal Parts
• Part number: 138-126
• Part type: Dual-filament headlight bulb
• Intended lighting-system voltage: 48V
• Bulb marking: 56V
• Power rating: 25/25W
• Base type: BAY15d
• Base diameter: 15mm
• Contacts: Two bottom contacts
• Locating pins: Offset bayonet pins
• Glass coating: Blue
• Light output color: White

Compatibility

For electric vehicles with a matching 48V headlight circuit, BAY15d socket, and 25/25W bulb requirement. Compare the original bulb's base, locating-pin positions, contacts, overall clearance, and electrical rating before ordering. A 48V battery pack alone does not confirm compatibility if the vehicle supplies a different voltage to its lights.

• Blue-coated glass for bright white light output
• 25/25W dual-filament design
• BAY15d bayonet base with offset locating pins
• Two bottom electrical contacts
• Intended for matching 48V lighting systems; bulb marked 56V

Brand: Universal Parts; Part number: 138-126; Type: Dual-filament headlight bulb; Intended lighting-system voltage: 48V; Bulb marking: 56V; Power: 25/25W; Base: BAY15d; Base diameter: 15mm; Contacts: 2 bottom contacts; Locating pins: Offset; Coating: Blue; Light output: White

Universal fit by specification only: electric vehicles with matching 48V headlight circuit, BAY15d socket, and 25/25W requirement; Verify locating pins, contacts, bulb clearance, and actual lighting voltage; Bulb marked 56V