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OSRAM Festoon Bulbs Review: Genuine OE-quality interior replacements

OSRAM 6438-02B Original Equipment Quality Festoon Bulbs, 12 V, 10 W, Set of 2, Yellow
4.7
[Genuine Osram Quality]  Original equipment quality ensures dependable, long-lasting automotive lighting performance.
[12V 10W Festoon Bulb]  SV8.5-8 base fits interior light fixtures requiring 12V 10W bulbs.
[OE Replacement Part]  Genuine Osram OE part for exact fit and factory-spec compatibility.
[Fully Road Legal]  Complies with road-legal standards for safe, lawful vehicle use.
[Twin Blister Pack]  Supplied in twin blister packaging for easy handling and spare convenience.
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Automotive interior lighting designed for direct replacement with genuine OE quality, introduced as OSRAM Festoon Bulbs. Drivers who want a straightforward swap for dim cabin lights get reliable, road-legal bulbs that fit common fixtures. Are these the right fit for your vehicle's festoon sockets?

⚡ At a Glance
  • Light Output: User reports confirm bright interior illumination suitable for cabin lamps
  • Best for: Owners replacing SV8.5-8 festoon interior bulbs in cars and vans
  • Not ideal for: Exterior lighting or specialised high-output applications

12V 10W festoon bulbs with SV8.5-8 base, supplied as a twin blister pack. Simple, standard specification designed for interior light replacement.


Reliable Fit – with genuine OE-quality construction

Manufactured to Osram original equipment standards, matching the SV8.5-8 festoon base used in many factory interior lamp fixtures. The 12V 10W specification aligns with common cabin lighting electrical requirements.

Direct-fit replacements reduce compatibility issues and simplify swaps, preserving correct electrical load for interior circuits.

Quick Installation – with the standard SV8.5-8 festoon base

The SV8.5-8 base is a standard festoon connection found in numerous vehicle interior lamps, allowing straightforward insertion into compatible sockets. No special tools or adapters are required for matching fixtures.

Easy to fit and replace, making a fast DIY bulb change possible for routine maintenance.

Compliant Lighting – thanks to fully road-legal status

Product description confirms full road-legal compliance for interior lighting use, meeting the regulatory requirements for replacement bulbs. Branded manufacture from Osram supports adherence to recognised standards.

Suitable for motorists who need compliant, MOT-friendly interior replacements and prefer branded components.

✨ The 4 Key Reasons for OSRAM Festoon Bulbs
  1. Genuine Osram build — Ensures consistent performance and trusted manufacturer reliability across replacements
  2. SV8.5-8 compatibility — Works with many standard interior light sockets across vehicles
  3. Fully road legal — Keeps interior lighting compliant for MOT and routine safety checks
  4. Twin blister pack — Two bulbs supplied for convenient paired replacement
📋 Technical Details at a Glance
  • Category: Automotive Parts and Accessories
  • Brand: OSRAM
  • Voltage: 12 V
  • Wattage: 10 W
  • Base: SV8.5-8 festoon
❓ Frequently Asked Questions

Q: Are these bulbs a direct replacement for standard interior festoon lights?

A: Yes, the 12V 10W specification and SV8.5-8 base match common interior festoon sockets for direct replacement.

Q: Are the bulbs road legal?

A: Yes, the product description states full road-legal compliance for interior lighting use.

Q: Are they easy to fit?

A: User reviews describe the bulbs as easy to fit and replace, making them suitable for simple DIY swaps.

🏆 Our Verdict

Suitable for motorists and DIYers who need straightforward, like-for-like interior bulb replacements. Genuine Osram OE-quality construction and road-legal compliance make them a dependable choice for cabin lighting. Strong long-term value for those who favour branded, compatible replacements and hassle-free fitting.