Replacement vehicle bulbs restore clear illumination while meeting legal requirements, especially for number plate and interior lamps. Having dependable, bright lamps makes overnight journeys and roadside checks far less stressful. Are dependable, road-legal spares worth keeping in the glovebox alongside the Tek Automotive 239 C5W Bulb?
⚡ At a Glance
- • Light Output: Bright, focused illumination suitable for number plate and interior lighting
- • Best for: Motorists and DIY mechanics needing reliable replacement festoon bulbs
- • Not ideal for: Owners looking to upgrade to LED or select coloured lighting
Specified as C5W, 12V and 5W in an S8.5D 11x38mm format. Supplied as a box of 10, E Marked and made to meet OE replacement standards.
Legal, road-ready lighting – with E Marking
E Marking is stated in the product description to indicate conformity with legal requirements for automotive lighting and road use. The certification is highlighted as a reason the bulbs are suitable for number plate and exterior applications.
Legal compliance reduces the risk of failing checks and ensures suitability for exterior fittings such as number plates.
Consistent bright illumination – thanks to 12V 5W festoon specification
Bulbs are listed as C5W, 12V and 5W with an S8.5D base and an 11x38mm physical size, matching common festoon lamp fittings. The specification aligns the bulb with standard vehicle sockets used for plates and interior lights.
Matching the common festoon footprint delivers the bright light users report, making replacements straightforward and reliable.
Practical spares bundle – with a box of 10 lamps
Supply is provided as a pack of ten identical bulbs to simplify maintenance and allow for immediate replacements when a lamp fails. Bulk packaging supports stock rotation for fleet or regular users.
Keeping ten bulbs handy reduces roadside hassles and ensures quick swaps without a trip to the parts shop.
✨ The 4 Key Reasons for Tek Automotive 239 C5W Bulb
- E Marked - Legal compliance for number plate and exterior lighting checks
- OE specification build - Consistent fit and function matching manufacturer replacement requirements
- Box of 10 - Handy supply reduces emergency trips while travelling or at home
- User-approved brightness - Many buyers report bright, reliable light for plates and trailers
📋 Technical Details at a Glance
- Category: Automotive Bulb
- Brand: Tek Automotive
- Model: 239 C5W
- Type: Festoon bulb
- Voltage: 12V
❓ Frequently Asked Questions
Q: Are these bulbs legal for road use?
A: Yes. The description states the bulbs are E Marked and road ready, making them suitable for number plate and exterior applications.
Q: Will these fit my vehicle?
A: Bulbs are specified as C5W, 12V, 5W with an S8.5D base and 11x38mm size; compare these dimensions with the existing bulb to confirm fit.
Q: How many bulbs are included and is there a guarantee?
A: A box contains 10 bulbs and the listing includes a money back guarantee for peace of mind.
🏆 Our Verdict
Suitable for motorists, DIYers and fleet operators who need dependable, road-legal festoon replacements. The combination of E Marking, OE-matching dimensions and a ten-bulb pack makes these practical spares. While upfront cost varies, bulk supply and guaranteed compliance deliver sensible long-term value for regular maintenance.
