LED-lamp Type T11 41MM (Set) - LG5109

LED Bulb Type T11 41 mm (Pair) – LG5109

This T11 41 mm LED bulb pair is a compact upgrade for interior and marker lighting where reliability matters more than gimmicks. Drawing just 1.3 W yet delivering 135 lumens, it gives a clean, bright output without stressing the wiring. Designed for 12–16 V DC systems, it suits cars, tractors and trucks that need a simple, long-life, plug-and-play replacement.

If you’re still running old festoon-style filament bulbs, you know the issues. Heat. Vibration failures. Dull light. These T11 41 mm LED bulbs solve that in one quick change. You keep the same footprint and fitting style, but gain modern LED efficiency and a much more stable light source.

Each bulb runs at 1.3 W, so current draw is low and predictable. That’s important on older wiring looms and in vehicles with multiple interior or marker lamps fed from a single circuit. At 135 lm per bulb, you get clear, usable light without glare – ideal where you need to see switches, controls and paperwork, but don’t want to blind the driver at night.

These bulbs are plug & play. Remove the old 41 mm festoon, clip the LED in, and you’re done. No resistors. No coding. No polarity games for standard installations on 12 V–16 V DC systems. They’re suitable for mixed fleets too – cars in the yard, tractors in the field, rigid trucks or light commercials on the road – anywhere a 41 mm festoon-style lamp is used for interior, courtesy, step, or marker lighting.

The LG5109 is EMC approved, so it’s designed not to introduce electrical noise into your vehicle systems. That matters if you’re running sensitive radios, CANbus-based controls or GPS equipment. It helps keep nuisance interference and diagnostic headaches off your desk.

Key Features

• T11 41 mm festoon format – direct replacement for standard 41 mm festoon bulbs, no housing modifications.
• 12–16 V DC operating range – optimised for passenger cars, light commercials, tractors and many truck interiors running 12 V systems.
• Low power draw – 1.3 W per bulb – reduces load on wiring and switches, ideal for multiple-lamp circuits and older vehicles.
• Bright 135 lm output – clear, efficient LED light that improves visibility inside the cab or compartment.
• Plug & play installation – simple swap from filament to LED, no extra drivers or resistors for typical 12 V applications.
• For cars, tractors and trucks – one part number that suits mixed fleets and simplifies stocking.
• EMC approved – designed to minimise electrical interference with radios, GPS units and onboard electronics.
• Compact 41 mm length – verified dimension for tight fittings and enclosed interior lamp housings.
• Sold as a matched pair – 1 × pair of T11 41 mm LED bulbs (LG5109) supplied per kit for balanced upgrades.

Ideal Applications

• Interior dome and courtesy lights in cars and light commercials
• Tractor and agricultural cab lighting where vibration kills filament bulbs
• Truck and bus interior, step or marker lights using 41 mm festoon bulbs
• Service vans and utility vehicles needing reliable load-space lighting
• Control panels, instrument surrounds or auxiliary interior fittings using 41 mm festoon holders

Why Choose LED-Global Lighting

LED-Global focuses on practical, engineered solutions that work every day in European conditions – from rural tractors to busy urban delivery fleets. Products like the LG5109 are specified with clear data, proven components and proper approvals, so you know exactly what you’re fitting and why it will last. That combination of European engineering, honest performance figures and dependable support is why fleet managers, auto electricians and agricultural workshops across Europe trust LED-Global for their lighting upgrades.