Phillips P21/4WLLB2 Fog Light Bulb

Reliable Fog Light Bulbs for Select European and American Vehicles

The Phillips LongerLife - Twin Blister Pack P21/4WLLB2 fog light bulbs provide consistent 12-volt illumination designed for a range of Audi, BMW, Mercedes-Benz, and other premium vehicles. These clear, dual-filament bulbs are engineered to meet specific lighting needs with a twist-type installation and a Baz15d base.

• 12 Volt electrical rating for standard automotive systems
• Dual filament design (21/4 wattage) for fog and parking light functions
• Clear bulb color for optimal light output and visibility
• Twist-type installation with Baz15d bulb base for secure fitment
• Three contact points ensuring reliable electrical connection
• Compatible with multiple makes and models including Audi A4, BMW 328i, Mercedes-Benz E320, and Porsche 911

About the Phillips LongerLife - Twin Blister Pack Line

The LongerLife - Twin Blister Pack from Phillips offers a convenient two-pack of fog light bulbs designed for extended service life and dependable performance. This product line focuses on providing durable lighting solutions that maintain consistent brightness over time, reducing the frequency of replacements for vehicles requiring P21/4W type bulbs.

Product Details and Specifications

The P21/4WLLB2 fog light bulb operates at 12 volts and features a dual filament setup, delivering 21 and 4 watts respectively. This allows the bulb to serve dual functions such as fog lighting and parking or side marker lighting. The clear bulb color ensures that light output is not diminished by tinting, providing clear visibility in adverse weather conditions. The twist-type mechanism and Baz15d base make installation straightforward and secure, compatible with a wide range of European and American vehicles including Audi 300SL, BMW M3, Mercedes-Benz ML350, and Volkswagen Passat.

Common Applications and Problem Solving

• Replacement for burnt-out or dim fog light bulbs on compatible Audi, BMW, and Mercedes-Benz models
• Improves visibility in fog, rain, and low-light driving conditions
• Restores proper lighting function for vehicles with dual-filament fog light requirements
• Ensures compliance with vehicle lighting standards for safety inspections
• Addresses flickering or intermittent fog light issues caused by worn bulbs

Installation Notes and Tips

When installing the P21/4WLLB2 fog light bulbs, ensure the vehicle is turned off and the fog light assembly is cool to avoid injury. The twist-type Baz15d base requires a simple twist-and-lock motion to secure the bulb in place. Verify the bulb is seated properly to prevent moisture ingress and electrical connection issues. Consult the vehicle’s owner manual for specific fog light assembly access instructions for models such as the Jaguar XJ or Saab 9000.

Quality Assurance and Warranty

Phillips manufactures the P21/4WLLB2 fog light bulbs to meet stringent automotive lighting standards. While specific warranty details are not provided, Phillips products typically undergo rigorous quality control to ensure durability and consistent performance. Using genuine Phillips bulbs helps maintain the integrity of your vehicle’s lighting system.