Phillips P21/4WLLB2 Fog Light Bulb

Phillips LongerLife Fog Light Bulb

Phillips P21/4WLLB2 is a 12-volt fog light bulb built for drivers who want dependable value and longer service life. With a clear bulb color, dual-filament design, and twist-type BAZ15d base, it supports precise exterior lighting performance across a wide range of European vehicles.

The LongerLife - Twin Blister Pack line focuses on extended bulb life for everyday driving. For applications such as Volkswagen Up!, Mercedes-Benz S500L, Volvo XC90, and Porsche 911, this Philips bulb line provides an OE-style lighting solution for exterior lamp service.

Key Features

• 12-volt fog light bulb for exterior lighting applications
• Dual-filament construction for specified lighting functions
• Clear bulb color for consistent light output
• Twist-type design with BAZ15d base and 3-contact configuration
• 21/4 watt rating for the listed application
• Philips LongerLife line for drivers seeking extended value
• Part number P21/4WLLB2 for accurate ordering and lookup

Detailed Description

Phillips P21/4WLLB2 is engineered for vehicles that require a BAZ15d twist-base bulb with a 3-contact layout. The 12V, dual-filament design supports the lighting functions specified by the vehicle application, while the clear lens helps maintain the original lighting appearance. This part number is listed across many fitments, including Mercedes-Benz CLK, BMW 3 Series, Volvo XC70, and Volkswagen Passat applications.

The LongerLife - Twin Blister Pack product line is positioned for value-focused replacement service, giving owners a practical option when replacing exterior bulbs on vehicles such as the Porsche Cayenne, Audi A4, and Mercedes-Benz E-Class. If you are searching for P21/4WLLB2, Philips fog light bulb, or BAZ15d 12V replacement bulb, this listing matches the confirmed fitment data provided.

What It Helps Solve

• Burned-out fog light bulb replacement
• Dim or inconsistent exterior lamp output
• Incorrect bulb base or contact configuration
• Service needs on vehicles with BAZ15d twist-type bulbs
• Replacement for listed rear, inner, outer, upper, or N/A positions where specified

Installation Notes and Tips

• Verify the vehicle year, make, model, and lamp position before ordering.
• Match the bulb base type, contact count, voltage, and wattage to the original specification.
• Some fitments list position-specific applications such as Rear, Inner, Outer, or Upper; use the exact position shown in the fitment data.
• For vehicles with notes referencing dome light or fog light installation, follow the application details exactly as listed.
• Handle the bulb carefully during installation and confirm proper seating in the twist-type socket.

Quality Assurance

Philips is a recognized lighting brand with a long history in automotive replacement bulbs. The LongerLife line is marketed by the manufacturer as a value-oriented bulb family for drivers who want dependable service from a standard replacement part.