Description

Introduction

Heavy vehicles need headlight bulbs built for their higher-voltage electrical systems, and the Eurolite H4 Halogen Bulb 24V 100/90W is designed exactly for that role. As a dual-filament H4 lamp rated for 24V systems, it’s the standard choice for trucks, buses, and other commercial vehicles that run on 24V electrics rather than the 12V systems found in typical cars. Sold in Eurolite’s “Premium Quality Lighting” retail box marked P43T, this bulb offers a straightforward, ready-to-fit replacement for dim or failing headlights on heavy-duty vehicles across Pakistan.

Features

The H4 format combines two filaments in a single bulb: one filament handles the low beam for regular driving, while the second activates the high beam for extra reach on darker roads. Built for 24V electrical systems, this bulb is matched to the higher voltage used in trucks and buses, unlike standard 12V car bulbs which are not interchangeable with 24V circuits. The halogen-filled glass capsule helps the filament burn brighter and more evenly over time, and the P43T three-pin base is the same globally standardized fitting used across the H4 family, so it slots directly into compatible 24V headlight housings.

Benefits

For commercial and heavy-vehicle drivers, reliable headlights are a safety essential — long hours on the road, night driving, and Pakistan’s foggy winter conditions all call for dependable illumination. The 100/90W rating provides strong output for both beam settings, helping trucks and buses maintain good visibility on highways and unlit roads. Because it’s built specifically for 24V systems, this bulb is a natural fit for transport companies, fleet operators, and workshops servicing heavy vehicles.

Specifications Table

Compatibility

This bulb is built specifically for 24V electrical systems, making it suitable for trucks, buses, and other commercial or heavy-duty vehicles that use 24V headlight circuits — it is not compatible with standard 12V passenger cars, which require a separate 12V-rated H4 bulb. Always confirm your vehicle runs on a 24V system and that your existing bulb is marked “H4” before ordering, since other headlight types (H1, H7, H11, etc.) use different bases and are not interchangeable.

Installation Guide

1. Switch off the engine and headlights, and let the old bulb cool fully before handling it.
2. Open the rear access panel/dust cover behind the headlight housing.
3. Disconnect the wiring plug and unclip the retaining ring or spring clip holding the old H4 bulb in place.
4. Insert the new Eurolite H4 24V bulb, matching the base tabs to the housing slots, and avoid touching the glass with bare fingers.
5. Secure the retaining clip, reconnect the wiring plug, refit the dust cover, and test both high and low beams before closing up.

Package Includes

• 1 x Eurolite H4 Halogen Bulb, 24V 100/90W
• Original Eurolite retail box

Care Instructions

Handle the bulb by its base rather than the glass, since skin oils can create hot spots that shorten bulb life; if the glass is touched, wipe it clean with isopropyl alcohol before fitting. Store in a dry place and make sure the headlight housing seal is properly closed after installation to keep moisture out.

Warranty

Specification could not be officially verified. Please confirm warranty terms with the seller or retailer at the time of purchase.

Why Buy This Product

The Eurolite H4 24V 100/90W bulb is a practical, correctly-rated headlight solution for trucks, buses, and commercial vehicles running 24V systems. Its standard H4/P43T fitment, dual-beam design, and clear Eurolite retail packaging make it a convenient choice for fleet maintenance and heavy-vehicle headlight replacement across Pakistan.

4. Product Highlights

• Eurolite-branded H4 dual-filament halogen bulb
• 24V, 100/90W high & low beam output
• Built specifically for trucks, buses & commercial vehicles
• Standard P43T three-pin base
• Halogen-filled capsule for consistent brightness
• Simple plug-and-play installation
• Suits 24V heavy-vehicle electrical systems
• Improves night-time visibility for fleet & transport vehicles
• Practical option for workshops & transport companies
• Comes in original Eurolite retail packaging

5. Key Features

• Eurolite H4 halogen bulb for 24V headlight systems
• 100/90W dual-beam output for high & low beam
• Halogen-filled glass capsule for even, bright light
• Standard H4 P43T base fits compatible 24V housings
• Easy 3-pin plug-and-play wiring connection
• Purpose-built for trucks, buses & commercial vehicles
• Reliable headlight upgrade for long-haul night driving
• Compact, durable bulb construction
• Straightforward DIY headlight bulb replacement
• Recognizable Eurolite retail box for easy identification

6. Technical Specifications

7. Package Includes

• 1 x Eurolite H4 24V 100/90W Halogen Bulb
• Eurolite branded box