Phillips P21/4WB2 Fog Light Bulb

Reliable Fog Light Bulb for Select European and Luxury Vehicles

The Phillips P21/4WB2 fog light bulb delivers consistent 12-volt illumination with a clear bulb design. Engineered for vehicles such as Audi A4, BMW 3 Series, Mercedes-Benz C-Class, and Porsche 911, this twin blister pack offers a dependable lighting solution for improved visibility in foggy conditions.

• 12 Volt operating voltage for standard automotive electrical systems
• Dual filament design with 21/4 wattage for fog and parking light functions
• Clear bulb color ensures optimal light output and clarity
• Twist type installation with Baz15d bulb base for secure fitment
• Three contact points for reliable electrical connection

About the Phillips Standard - Twin Blister Pack Line

The Standard - Twin Blister Pack from Phillips provides a convenient two-pack of fog light bulbs designed for easy replacement and maintenance. This product line focuses on delivering consistent performance and compatibility with a wide range of European and luxury vehicles, including models from Audi, BMW, Mercedes-Benz, and Porsche. The packaging ensures bulbs remain protected until installation.

Product Details and Specifications

The P21/4WB2 fog light bulb operates at 12 volts and features a dual filament setup, allowing it to serve both fog light and parking light functions within a single bulb. The clear bulb color supports maximum light transmission, enhancing visibility in adverse weather. Its Baz15d base and twist type design provide a secure and straightforward installation process. With three contact points, the bulb maintains stable electrical connectivity, reducing flicker and ensuring consistent illumination.

Common Applications and Problem Solving

• Restores fog light functionality on Audi A4 and BMW 3 Series models
• Replaces burnt-out bulbs in Mercedes-Benz C-Class and Porsche 911 fog lights
• Improves visibility during fog, rain, or low-light driving conditions
• Addresses flickering or dim fog lights caused by faulty bulbs
• Ensures compliance with vehicle lighting requirements for safety inspections

Installation Notes and Tips

When replacing the Phillips P21/4WB2 fog light bulb, ensure the vehicle is turned off and the fog light assembly is cool to the touch. The twist type Baz15d base requires a simple twist-and-lock motion for secure installation. Avoid touching the glass bulb with bare hands to prevent premature bulb failure. Verify proper seating of the bulb to maintain electrical contact and prevent moisture ingress.

Quality Assurance and Warranty

Phillips manufactures the P21/4WB2 fog light bulb to meet OEM standards for fit, form, and function. While specific warranty details are not provided, Phillips products typically adhere to strict quality control processes to ensure reliability and durability in automotive lighting applications.