OSRAM Red Diadem PR21/5W (Single)


OSRAM Red Diadem PR21/5W (Single)

Why buy me?

OSRAM Diadem red PR21/5W bulbs are an ideal replacement for your tail lights. This diadem bulb features a specialist opalescent interference coating and illuminates red when in use. The OSRAM Diadem red bulb can be fitted in vehicles with tail lights that use a clear case. We recommend referring to your vehicle handbook before you purchase this bulb to make sure your vehicle can be fitted with PR21W or PR21/5W bulbs.

Features and benefits

  • Tail light replacement
  • Opalescent interference coating
  • Illuminate red when in use
  • Styling bulb
  • Can be fitted in vehicles that use a clear case

The technical bit


Number of bulbs: 1
Brand: OSRAM
Fitting: PR21/5W
Bulb type: Styling
Voltage: 12V
Wattage: 21/5W
Road legal: Yes


Number of Bulbs1
FittingPR21/5W (380R)
Bulb TypeStyling
Light Improvement
Road LegalYes
Kelvin Ratingn/a

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: £24.99 You save £3.00

£ 21.99


Sorry, this item is currently out of stock & unavailable for order. Please check back soon.

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