Replacement Light Bulb for OSRAM SYLVANIA L8W/21-840 Marine Navigation - 8W 4100K G5 Base

Replacement for OSRAM SYLVANIA L8W/21-840 provides 400 lumens output at 4100 color temperature for marine navigation lamps using an 8-watt T5 shape with 7500-hour rated life and CRI of 82.

Key Features & Benefits

• Produces 400 lumens from 8 watts input
• 4100 color temperature for navigation lighting
• 7500-hour operational lifespan
• CRI rating of 82 for color rendering
• T5 shape with G5 miniature bipin base

Product Specifications

• Watts: 8
• Color Temp: 4100
• Lumens: 400
• Life: 7500 hours
• CRI: 82

Replacement Compatibility

Compatible with marine navigation lamp systems requiring OSRAM SYLVANIA L8W/21-840 or equivalent T5 models with G5 base.

Discover the Perfect Replacement

Confirm your current bulb specifications match these details to ensure proper fit in your marine navigation setup before ordering.

During the checkout process, you can choose from expedited services such as overnight delivery to standard ground shipping. We aim to ensure your order is delivered promptly and reliably, wherever you are.

All returns must be made within 30 days of purchase with the invoice. (After 30 days, Interlight credit only, Minimum 25% restocking fee, no returns after 60 days, special items order just for you are not returnable.)

At Interlight, your satisfaction is our priority. We offer a 30-day money-back guarantee on eligible products, provided they are returned in resalable condition with the original invoice.