P21/5W (380) Super Canbus LED Brake & Tail Light Bulbs 1800LM White Fan Cooled

P21/5W (380) Super Canbus LED Brake & Tail Light Bulbs 1800LM White Fan Cooled

Upgrade your vehicle's original P21/5W (380) brake and tail light bulbs with these premium Super Canbus LED replacements. Designed as a direct Plug & Play upgrade, these bulbs deliver a crisp modern 5700K Cool White light with up to 1800 lumens of brightness whilst consuming significantly less power than standard halogen bulbs.

Each bulb features high-output automotive-grade LED chips, an intelligent Super Canbus driver and an integrated high-speed cooling fan to provide reliable long-term performance, excellent heat dissipation and improved compatibility with modern vehicle electrical systems.

Key Features

• Super Canbus P21/5W (380) LED Bulbs
• Direct replacement for original dual-filament bulbs
• Up to 1800 Lumens high output
• 5700K Cool White light
• 18W High Output / 2.5W Low Output
• High and low brightness for brake and tail light operation
• Automotive-grade LED chips
• Built-in intelligent Super Canbus driver
• Active high-speed cooling fan
• Aviation-grade aluminium body
• 360° light distribution
• Plug & Play installation
• Non-polarity design
• Over 40,000-hour lifespan
• Energy-efficient operation
• Instant illumination
• Supplied as a pair

Why Upgrade to LED?

Compared with conventional halogen bulbs, these premium LED replacements produce a brighter, cleaner and more modern light output whilst consuming less power. The result is improved rear visibility, faster illumination and a stylish OEM+ appearance.

LED bulbs illuminate more quickly than traditional filament bulbs, helping the brake light reach full brightness almost instantly when the brake pedal is pressed.

Dual-Intensity Brake and Tail Light Operation

The P21/5W (380) is a dual-intensity bulb type designed to perform two separate lighting functions from the same bulb. The lower output is normally used for the tail or rear position light, while the higher output is activated for the brake light.

These LED bulbs reproduce both brightness levels, making them suitable as a direct replacement in compatible P21/5W BAY15D brake and tail light applications.

Intelligent Super Canbus Technology

Each bulb incorporates an intelligent Super Canbus driver designed to minimise dashboard bulb warning messages, flickering, rapid flashing and electrical interference on many modern vehicles.

Whilst compatible with most Canbus systems, some vehicles with particularly sensitive bulb-monitoring systems may still require an additional load resistor or Canbus decoder.

Advanced Active Cooling

A built-in high-speed turbine cooling fan continuously removes heat away from the LED chips, helping to maintain stable light output and extend component life.

Combined with the CNC-machined aviation-grade aluminium housing, the bulbs remain cooler and more stable during prolonged operation.

360° LED Light Distribution

The multi-sided LED chip arrangement closely replicates the light position of the original filament bulb, producing a wide and even light pattern inside the lamp housing.

This design helps provide consistent illumination across the brake and tail light reflector for improved visibility from different viewing angles.

Ideal Applications

• Brake Lights
• Tail Lights
• Rear Position Lights
• Parking Lights, vehicle dependent
• Daytime Running Lights, vehicle dependent
• Any compatible application requiring a P21/5W bulb
• Any compatible application requiring a 380 bulb
• Any compatible application requiring a BAY15D dual-contact base

Technical Specifications

P21/5W and 380 Bulb Compatibility

P21/5W and 380 are commonly used references for the same dual-filament bulb format. These bulbs use a BAY15D dual-contact base with side locating pins positioned at different heights.

Do not confuse the P21/5W BAY15D base with similar-looking bulb bases such as BA15S, BA15D or BAZ15D. Please remove and inspect your existing bulb before ordering, paying particular attention to the pin position and the number of electrical contacts on the bottom of the bulb.

Package Contents

• 2 × Super Canbus P21/5W (380) LED Bulbs
• Retail Presentation Box

Important Information

• Please check your existing bulb type and base before ordering.
• Designed for vehicles requiring P21/5W (380) BAY15D bulbs.
• The BAY15D base has two electrical contacts and side pins positioned at different heights.
• Do not order solely by vehicle make, model or registration number.
• Canbus compatible with most vehicles.
• Some vehicles with highly sensitive bulb-monitoring systems may still require additional resistors or decoders.
• Suitable for 12V vehicle electrical systems.
• Please ensure cool white light is suitable for the intended lamp position.
• Road-use legality depends on the vehicle, lamp unit and intended application.

Why Buy from HIDS-DIRECT?

HIDS-DIRECT specialises in premium automotive lighting products, supplying high-quality LED upgrades trusted by thousands of customers across the UK.

Every product is carefully selected for performance, reliability and ease of installation, helping you upgrade your vehicle with confidence.

Frequently Asked Questions

Will these P21/5W LED bulbs fit my vehicle?

These bulbs are designed for vehicles that use a P21/5W (380) bulb with a BAY15D dual-contact base. Please remove and check your existing bulb, consult your vehicle handbook or compare the bulb base before ordering.

Are P21/5W and 380 the same bulb type?

Yes. P21/5W and 380 are commonly used references for the same dual-intensity automotive bulb type. Both normally use a BAY15D base with two bottom contacts and side pins positioned at different heights.

Do these bulbs provide both brake and tail light functions?

Yes. P21/5W is a dual-intensity bulb type. These LED bulbs provide a lower output for the tail or rear position light and a brighter output for the brake light.

What is the difference between BAY15D and BAZ15D?

A BAY15D base normally has two electrical contacts and side locating pins positioned at different heights. A BAZ15D base uses a different offset pin arrangement. Although the bases may look similar, they are not interchangeable.

Are these bulbs Canbus compatible?

Yes. They include built-in Super Canbus electronics designed to reduce dashboard bulb warnings, flickering and shut-off issues on many modern vehicles. Some vehicles with especially sensitive bulb-monitoring systems may still require an additional resistor or decoder.

What colour light do these bulbs produce?

These bulbs produce a crisp 5700K cool white light. Please ensure white light is suitable for the intended lamp function and permitted for your vehicle application.

Are these bulbs polarity sensitive?

No. They use a non-polarity design, so they can operate regardless of the positive and negative electrical orientation within a compatible socket.

Do these bulbs have a cooling fan?

Yes. Each bulb contains a built-in high-speed turbine fan that helps remove heat from the LED chips and supports stable performance during prolonged use.

Do I need to modify the wiring?

No. These bulbs are designed as a direct Plug & Play replacement for a compatible P21/5W BAY15D socket. No rewiring or coding is normally required.

How many bulbs are supplied?

This product is supplied as a pack of two LED bulbs.

Are these LED bulbs road legal?

Road-use legality depends on the vehicle, lamp unit and intended function. LED retrofit bulbs may not be approved for use in all exterior lighting applications, so please check the relevant vehicle-lighting regulations before installation.