OSRAM Cool Blue Boost H11 (Twin)


Seeking the ultimate in style but don’t want to compromise on brightness? Choose the new OSRAM Cool Blue Boost. The range produces a colour temperature of up to 5000K, plus delivers up to 50% extra brightness on the road than standard. Choose OSRAM Cool Blue Boost and you’ll benefit from the best of both worlds: a stylish, white light with extra light output.

Many styling upgrades achieve a high colour temperature by adding a blue coating to the glass of the bulb. This does make the light whiter, but can also make the light on the road slightly dimmer. Cool Blue Boost bulbs counteract this problem by running at a higher wattage. This means that the bulbs produce a brighter light than standard, giving you that crucial extra brightness. You’ll be able to spot any potential hazards on the road with ease, whilst retaining that modern look for your vehicle.

A colour temperature of up to 5000K produces a close colour match to factory-fitted Xenon HID bulbs – a bright white light with a slight blue tint that delivers optimum style.

Please note: These bulbs are not road legal. These parts are intended for off road use in rally type applications. Due to the higher wattage it is necessary to ensure that the headlight can handle the increased heat that they inevitably generate.

The wiring also has to be able to be rated for the higher current (~6.5A) or if in doubt, the bulb should be operated via a relay.


OSRAM Approved Partner

Counterfeit bulbs are an increasing problem in the automotive industry. OSRAM are now fighting back against fake lamps, and are helping customers to make the right choice when buying online.

As part of their Approved Partner Programme, we are authorised and recommended by OSRAM. When you shop with us, you’re getting the highest quality, genuine products, supplied to us directly by the manufacturer.

You can find out more about OSRAM’s Approved Partner Programme here.

OSRAM Trust Program

OSRAM have implemented safety features into the manufacturing process enabling you to authenticate your xenon or halogen lamps in an easy 2-step online check.

Number of Bulbs2
Bulb TypeStyling
Kelvin RatingUp to 5000K
Road LegalNo
Light Improvement

Delivery Information

We aim to dispatch all orders the same/next business day. Delivery times on our standard delivery service are:

UK: 2-3 business days*
Europe: 5-7 business days*
Rest of the World: 5-10 business days*

Need your order faster?
Customers in the UK, US & Canada can also upgrade to an express delivery service. Delivery times for this service are:

UK Next Business Day (DPD): £5.49
US & Canada 2-4 Business Days (FedEx): £13.99

*average delivery times.

RRP: £39.99 You save £15.00

£ 24.99

4.8 Based on 6 customer reviews

In stock

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Customer Reviews

OSRAM Cool Blue Boost H11 (Twin)

5 Good bulbs

I regularly use Philips, but gave these Osram a go. Similar build quality to Philips. Light is crisp white and not too blue. Delivery from UK to Aus was prompt (3wks). 6th order over 10yrs from Powerbulbs.

By Nick on

OSRAM Cool Blue Boost H11 (Twin)

5 Excellent product and service

The product arrived in time and is excellent, it has made a big difference to my usual bulbs, a much brighter white light. Service was so excellent with great customer service. Will definitely this service use again

By CBrandon on

OSRAM Cool Blue Boost H11 (Twin)

5 Very white

Good quality bulbs, look nice modern and as white as white can get,

By Kris Limmer on

OSRAM Cool Blue Boost H11 (Twin)

5 Totally recommend

I bought this for my toyota avensis t27 to replace oem halogen bulbs, and I couldn't be more happy, love the white tone! White tone I would like powerbulbs alow us to publish photo because I have one great photo oem VS blue cool boost

By Diogo on

OSRAM Cool Blue Boost H11 (Twin)

4 Osram cool blue boost

Good brand.find they last longer than Philips. These cool blue boost I got for my fog lights. Give good light and good led look.not perfect led look but close

By Munsterguy on

OSRAM Cool Blue Boost H11 (Twin)

5 Perfectly Blue!

I recommend these lamps if you are looking for a blue look, I was quite surprised at how blue they looked considering they are halogen bulbs. I did not see that they were not road legal, but honestly, they don't look road legal. Crossing a recent Toyota Camry is much more blinding than these bulbs. The price was really good too, I paid 45$CAD for these while other bulbs that had a yellow-ish tint were selling for 70$ at the time. I would buy these again and I hope they last me a long time!

By Jonathan on

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