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Stop light bulb for Auto

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Items: 146
10/10 Based on over 1901 customer ratings
Article №: 89901103
HERTH+BUSS ELPARTS Bulb, brake / tail light P21/5W, 12V, BAY15d, 21/5W
  • Bulb Type:  P21/5W
  • Voltage [V]:  12
  • Rated Power [W]:  21/5
  • Socket Type:  BAY15d
  • Height [mm]:  52,5
  • Diameter [mm]:  26,5
  • Condition:  New
15% Sale
£ 0,68
£ 0,58
incl. 20% VAT
In stock
10/10 Based on over 1153 customer ratings
Article №: LID10050
DIEDERICHS Bulb, brake / tail light P21/5W, 12V, Bay15d, 5W, 21W
  • Bulb Type:  P21/5W
  • Voltage [V]:  12
  • Rated Power [W]:  5, 21
  • Socket Type:  Bay15d
  • Condition:  New
15% Sale
£ 0,98
£ 0,83
incl. 20% VAT
In stock
DIEDERICHS Brake light bulb LID10071
Bulb, brake / tail light LID10071
8.0/10 Based on over 38 customer ratings
Article №: LID10071
DIEDERICHS Bulb, brake / tail light R10W, 12V, BA15d, 10W
  • Bulb Type:  R10W
  • Voltage [V]:  12
  • Rated Power [W]:  10
  • Socket Type:  BA15d
  • Condition:  New
15% Sale
£ 0,98
£ 0,83
incl. 20% VAT
In stock
10/10 Based on over 1246 customer ratings
Article №: 1 987 302 814
BOSCH Bulb, brake / tail light P21/5W, 12V, BAY15d, 21/5W
  • Bulb Type:  P21/5W
  • Voltage [V]:  12
  • Rated Power [W]:  21/5
  • Socket Type:  BAY15d
  • Condition:  New
15% Sale
£ 0,98
£ 0,83
incl. 20% VAT
In stock
8.0/10 Based on over 300 customer ratings
Article №: N566
NEOLUX® Bulb, brake / tail light P21/4W, 12V, BAZ15d, 21 / 4W
  • Bulb Type:  P21/4W
  • Voltage [V]:  12
  • Rated Power [W]:  21 / 4
  • Socket Type:  BAZ15d
  • Condition:  New
15% Sale
£ 1,08
£ 0,92
incl. 20% VAT
In stock
TESLA Brake light bulb B52401
Bulb, brake / tail light B52401
8.0/10 Based on over 10 customer ratings
Article №: B52401
TESLA Bulb, brake / tail light P21/4W, 12V, BAZ15d, 21/4W
  • Bulb Type:  P21/4W
  • Voltage [V]:  12
  • Rated Power [W]:  21/4
  • Socket Type:  BAZ15d
  • Condition:  New
15% Sale
£ 1,08
£ 0,92
incl. 20% VAT
In stock
10/10 Based on over 1031 customer ratings
Article №: 8GD 004 772-121
HELLA Bulb, brake / tail light P21/4W, 12V, 21/4W
  • Bulb Type:  P21/4W
  • Voltage [V]:  12
  • Rated Power [W]:  21/4
  • Quantity:  10
  • Inspection Tag:  E1
  • Packing Type:  Box
  • Condition:  New
15% Sale
£ 1,18
£ 1,00
incl. 20% VAT
In stock
8.0/10 Based on over 41 customer ratings
Article №: 17881
NARVA Bulb, brake / tail light P21/4W, 12V, BAZ15d, 21/4W
  • Bulb Type:  P21/4W
  • Voltage [V]:  12
  • Rated Power [W]:  21/4
  • Socket Type:  BAZ15d
  • Condition:  New
15% Sale
£ 1,28
£ 1,09
incl. 20% VAT
In stock
8.0/10 Based on over 167 customer ratings
Article №: 1 987 302 215
BOSCH Bulb, brake / tail light P21/4W, 12V, BAZ15d, 21/4W
  • Bulb Type:  P21/4W
  • Voltage [V]:  12
  • Rated Power [W]:  21/4
  • Socket Type:  BAZ15d
  • Condition:  New
15% Sale
£ 1,58
£ 1,34
incl. 20% VAT
In stock
8.0/10 Based on over 95 customer ratings
Article №: 032105
VALEO Bulb, brake / tail light P21/4W, 12V, BAZ15d, 21/4W, ESSENTIAL
  • Bulb Type:  P21/4W
  • Voltage [V]:  12
  • Rated Power [W]:  21/4
  • Socket Type:  BAZ15d
  • Supplementary Info:  ESSENTIAL
  • Condition:  New
15% Sale
£ 1,58
£ 1,34
incl. 20% VAT
In stock
10/10 Based on over 463 customer ratings
Article №: 8GD 008 893-002
HELLA Bulb, brake / tail light W21/5W, 12V, W3x16q, 21/5W
  • Bulb Type:  W21/5W
  • Voltage [V]:  12
  • Rated Power [W]:  21/5
  • Quantity:  10
  • Inspection Tag:  E4
  • Socket Type:  W3x16q
  • Packing Type:  Box
  • Condition:  New
15% Sale
£ 1,68
£ 1,43
incl. 20% VAT
In stock
8.0/10 Based on over 15 customer ratings
Article №: 1 987 302 813
BOSCH Bulb, brake / tail light P21/4W, 12V, BAZ15d, 21/4W
  • Bulb Type:  P21/4W
  • Voltage [V]:  12
  • Rated Power [W]:  21/4
  • Socket Type:  BAZ15d
  • Condition:  New
15% Sale
£ 1,68
£ 1,43
incl. 20% VAT
In stock
8.0/10 Based on over 2 customer ratings
Article №: 8GD 004 772-151
HELLA Bulb, brake / tail light P21/4W, 12V, Baz15d, 21/4W
  • Bulb Type:  P21/4W
  • Voltage [V]:  12
  • Rated Power [W]:  21/4
  • Socket Type:  Baz15d
  • Condition:  New
15% Sale
£ 1,68
£ 1,43
incl. 20% VAT
In stock
8.0/10 Based on over 25 customer ratings
Article №: N566-02B
NEOLUX® Bulb, brake / tail light P21/4W, 12V, BAZ15d, 21 / 4W
  • Bulb Type:  P21/4W
  • Voltage [V]:  12
  • Rated Power [W]:  21 / 4
  • Socket Type:  BAZ15d
  • Quantity:  2
  • Condition:  New
15% Sale
£ 1,78
£ 1,51
incl. 20% VAT
In stock
8.0/10 Based on over 210 customer ratings
Article №: 1 987 302 282
BOSCH Bulb, brake / tail light P21/5W, 12V, BAY15d, 21/5W
  • Bulb Type:  P21/5W
  • Voltage [V]:  12
  • Rated Power [W]:  21/5
  • Socket Type:  BAY15d
  • Condition:  New
15% Sale
£ 1,98
£ 1,68
incl. 20% VAT
In stock
DIEDERICHS Brake light bulb LID10092
Bulb, brake / tail light LID10092
8.0/10 Based on over 67 customer ratings
Article №: LID10092
DIEDERICHS Bulb, brake / tail light W21/5W, 12V, W3x16q, 5W, 21W
  • Bulb Type:  W21/5W
  • Voltage [V]:  12
  • Rated Power [W]:  5, 21
  • Socket Type:  W3x16q
  • Condition:  New
15% Sale
£ 1,98
£ 1,68
incl. 20% VAT
In stock
8.0/10 Based on over 250 customer ratings
Article №: 17919
NARVA Bulb, brake / tail light W21/5W, 12V, W3x16d, 21/5W
  • Bulb Type:  W21/5W
  • Voltage [V]:  12
  • Rated Power [W]:  21/5
  • Socket Type:  W3x16d
  • Condition:  New
15% Sale
£ 1,98
£ 1,68
incl. 20% VAT
In stock
8.0/10 Based on over 78 customer ratings
Article №: 7225
OSRAM ORIGINAL Bulb, brake / tail light P21/4W, 12V, BAZ15d, 21/4W
  • Bulb Type:  P21/4W
  • Voltage [V]:  12
  • Rated Power [W]:  21/4
  • Socket Type:  BAZ15d
  • Product line:  ORIGINAL
  • Condition:  New
15% Sale
£ 2,08
£ 1,77
incl. 20% VAT
In stock
8.0/10 Based on over 234 customer ratings
Article №: 1 987 302 252
BOSCH Bulb, brake / tail light W21/5W, 12V, W3x16q, 21/5W
  • Bulb Type:  W21/5W
  • Voltage [V]:  12
  • Rated Power [W]:  21/5
  • Socket Type:  W3x16q
  • Condition:  New
15% Sale
£ 2,28
£ 1,94
incl. 20% VAT
In stock
8.0/10 Based on over 114 customer ratings
Article №: 12594CP
PHILIPS Bulb, brake / tail light P21/4W, 12V, BAZ15d, 21/4W
  • Bulb Type:  P21/4W
  • Voltage [V]:  12
  • Rated Power [W]:  21/4
  • Socket Type:  BAZ15d
  • Condition:  New
15% Sale
£ 2,28
£ 1,94
incl. 20% VAT
In stock
Items per page: 20

Replace a Stop light bulb – a defective one or if the limit of use has been already reached. Find out useful information about Brake light bulb

Brake light bulbs: operation features

Brake light bulbs are the key elements of the light signals used to warn other drivers about slowing down or stopping. They have a direct impact on road safety, therefore, their proper functioning is required by law. As a source of light, conventional or halogen filament bulbs are used in brake lights.

Tips on how to choose, use and replace them

  • An average lifespan of filament bulbs used in brake lights is 250–650 hours, depending on the rated power of the part. However, there are items with extended service life. They can last for about 1,250–2,000 hours.
  • It is better to replace both components at once. As they have the same lifespan, burnout of one of them means the other one is soon going to become out of order as well. Besides, their light intensity decreases with time. Therefore, only replacing them in pairs allows to obtain lighting of the highest quality.
  • To make the brake lights well visible at day time, opt for halogen filament bulbs. They are certified by the ECE standards so they can be used on public roads. In comparison with conventional ones, they have a 60% higher luminous efficiency and high colour temperature which reaches 4,500 K.
  • Pay your attention to the colour of the bulb shell: clear bulbs are installed into the lights with a red lens, red bulbs – into white or clear ones.

Malfunctions of brake light bulbs, their causes and symptoms

  • Filament breakage. The reasons are expired service life, unstable voltage, use of incompatible or poor-quality components. The symptom is the absence of light when the lamps are switched on.
  • Soot deposits on the bulb shell. It is more relevant for halogen bulbs, especially if errors were made during their installation. Due to this, the bulb shell becomes dim and the light intensity decreases.

Buycarparts.co.uk is an ideal place for buying car parts

You can buy brake light bulbs at an advantageous price at our online shop. In our catalogue, you’re sure to find all the car parts you need. You can be confident of their high quality: we only offer products made by the manufacturers with an impeccable reputation.

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