Automotive replacement bulbs designed for dependable brake and tail illumination, manufactured to original equipment standards. Drivers who need consistent, road-legal signalling will gain confidence from reliable fit and clear light output. Does Tek Automotive P21/5W Bulb deliver the durability and compliance required for everyday motoring?
⚡ At a Glance
- • Light Output: Separate 21W brake beam and 5W tail beam, bright and effective for rear signalling
- • Best for: Private car owners and DIYers who want reliable, road-legal rear lighting replacements
- • Not ideal for: High-performance or LED conversion projects that require different fittings or technology
Twin-filament 12V 21/5W BAY15D bulbs supplied in a box of 10, built to original equipment fitting standards. E approved certification confirms suitability for road use in conventional brake and tail lamp circuits.
Clear Brake and Tail Signalling – thanks to twin-filament 21/5W construction
Two separate filaments run at 21 watts for the brake function and 5 watts for the tail light on a 12 volt circuit. BAY15D base with opposite pins at different levels ensures correct alignment in the lamp holder.
Distinct, reliable light levels for braking and rear illumination reduce ambiguity for following drivers and improve safety during night and daytime driving.
Accurate Fitment Every Time – with BAY15D base and OE-standard manufacturing
Opposite pin positions on the BAY15D fitting prevent incorrect insertion, while build quality matches original equipment specifications. Manufacturing to OE standards helps maintain consistent dimensions and contact points.
Straightforward replacement with minimal fuss, reducing time in the garage and lowering the chance of fitment issues when matching lamps to vehicle registrations.
Road-Legal Certification – thanks to E approved compliance
Bulbs carry E approval for road use, indicating conformance with recognised European lighting regulations for rear lamps. Compliance covers performance and safety attributes required for lawful use.
Peace of mind when using on public roads, ensuring signals meet legal requirements and avoid MOT or enforcement complications related to non-compliant lighting.
✨ The 4 Key Reasons for Tek Automotive P21/5W Bulb
- Twin-Filament 21/5W - Provides distinct brake and tail light outputs for clear signalling.
- BAY15D Fitting with Opposite Pins - Prevents incorrect insertion and ensures secure seating.
- Box of 10 - Supplies multiple spares for several vehicles or future replacements.
- E Approved Certification - Confirms legal compliance for use on public roads.
📋 Technical Details at a Glance
- Category: Automotive replacement bulbs
- Bulb type: P21/5W 380
- Voltage: 12V
- Wattage: 21/5W (twin filament)
- Base / Fitting: BAY15D
❓ Frequently Asked Questions
Q: Are these bulbs road legal?
A: Yes, E approved certification is specified, indicating suitability for road use.
Q: Will they fit my car?
A: Manufacturing to original equipment standards and BAY15D base with opposite pins supports accurate fitment; user reviews note reliable fit via vehicle registration search.
Q: How many bulbs are included in the pack?
A: A box of 10 bulbs is supplied, providing multiple spares for replacements.
🏆 Our Verdict
Bulb replacements suit motorists and DIY enthusiasts who want dependable, road-legal rear lighting with straightforward fitment. Twin-filament 21/5W construction combined with BAY15D fitting and E approval makes for a practical, safety-focused choice. The boxed quantity and OE-standard manufacture give sensible long-term value for those who prefer to keep spares on hand.
