Automotive H4 headlight bulb IWH 019354 12V 60/55W P43t

The IWH 019354 Automotive H4 headlight bulb is a dual-filament halogen lamp designed for vehicles with H4 fittings. Rated at 12V with 60/55W output, this P43t-base bulb provides both low-beam and high-beam illumination from a single unit. It is intended as a direct replacement for standard H4 bulbs, delivering conventional halogen light for everyday driving and routine maintenance tasks.

Advantages

This halogen H4 bulb offers a straightforward, compatible solution for vehicles that require a 12V 60/55W P43t lamp. Its dual-filament design ensures reliable switching between low and high beams without additional adapters. The bulb’s standard shape and base type make installation and replacement predictable and compatible with most H4-equipped housings. As a conventional halogen product, it provides consistent color temperature and beam characteristics commonly expected from OEM-style lighting.

Suitable for

• Replacement of worn or damaged H4 headlight bulbs in cars and light trucks
• Everyday driving where standard halogen illumination is required
• Fleet maintenance and scheduled bulb replacement programs
• Workshops performing routine headlight service and checks

Key specifications

• Voltage: 12 V
• Power: 60/55 W (dual filament for high and low beam)
• Base type: P43t (H4 fitting)
• Bulb type: Halogen
• Application: Road vehicle headlight, low and high beam

How to use

Turn off the vehicle and allow the existing lamp to cool before starting. Access the headlight housing according to the vehicle manufacturer’s instructions, remove the protective cover or connector, and disconnect the wiring plug. Release the retaining clip or mechanism and remove the old bulb by pulling it straight out. Handle the new IWH H4 bulb by the base only; avoid touching the glass envelope with bare fingers to prevent premature failure. Insert the bulb into the socket ensuring correct orientation and secure the retaining clip. Reconnect the wiring, replace any covers, and test both low and high beam functions before closing the hood.

Usage recommendations

For reliable performance, replace bulbs in pairs to maintain balanced illumination. If replacing a bulb after touching the glass, clean the surface with isopropyl alcohol and a lint-free cloth. Use the IWH H4 bulb only in compatible H4/P43t fittings and follow vehicle-specific guidance for access, alignment, and beam adjustment to ensure road-legal beam pattern and optimal visibility.