Multiple manufacturers; F4T5/CW is a standardized lamp designation marketed by GE/Current, Philips, LEDVANCE/SYLVANIA, Eiko, and others rather than a uniquely identifiable appliance-OEM number. Range 4 W T5 Cool White Pr

Nominal 6-inch, 4 W T5 preheat linear fluorescent lamp with a G5 miniature bi-pin base and cool-white light (commonly specified as 4100 K). It is a general-purpose lamp format that is documented for use in compatible range/oven lighting applications as well as other fixtures.

Is This the Right Part?

Common Symptoms

• No light output
• Intermittent or flickering illumination
• Dim or uneven light output
• Darkening near one or both lamp ends

Check Before Replacing

• Turn electrical power off before inspection, removal, or installation.
• Confirm the lamp marking, 4 W rating, nominal 6-inch T5 size, and G5 miniature bi-pin base match the fixture requirements.
• Visually inspect the glass tube for breakage, darkened ends, or other visible damage without applying force.
• If the lamp appears intact, check externally accessible socket, starter, or ballast markings for compatibility with a 4 W T5 preheat lamp; do not open or modify energized components.

Pro Tip

Part Details

Key Features

• 4 W electrical rating
• T5 linear fluorescent format
• G5 miniature bi-pin base
• Nominal 6-inch length
• Cool-white phosphor
• Approximately 4100 K color temperature, depending on manufacturer version and documentation

Installation Notes

• Switch off electrical power and allow the lamp and fixture to cool before handling.
• Wear safety glasses and gloves when handling the glass lamp.
• Insert the G5 pins into the socket without excessive force; do not twist or bend the lamp beyond the fixture's normal insertion method.
• Replace the lamp only with a compatible 4 W T5 preheat specification, and follow the appliance or fixture manufacturer's instructions.
• Handle and dispose of the fluorescent lamp according to applicable local requirements if it is broken or discarded.