Phillips 1003LLB2 Dome Light Bulb - Rear

Phillips Dome Light Bulb for Interior Lighting

Restore interior visibility with the Phillips LongerLife dome light bulb, part number 1003LLB2. Built for drivers who want value from a dependable 12-volt interior bulb, it delivers clear light for dome lamp service in a wide range of classic and late-model vehicles.

Key Features

• Phillips LongerLife line for value-focused interior lighting
• 12.8-volt bulb with clear output for dome light applications
• Twist-type design with BA15s base and 2-contact configuration
• 12.03-watt rating for interior dome lamp use
• Direct replacement style for many Chevrolet, GMC, Buick, Cadillac, Dodge, Ford, Pontiac, and more
• Part number 1003LLB2 for accurate ordering and lookup

Product Details

The Phillips LongerLife - Twin Blister Pack line is built around practical service life and everyday value, making it a solid choice for interior lighting repairs. This dome light bulb uses a clear lens and twist-type BA15s base, with a single filament and 2-contact layout for the specified dome lamp applications. It is a straightforward replacement for vehicles that need reliable cabin illumination without changing the original lighting setup. This part cross-references Four Seasons 47800 for the same application.

Fitment includes many Chevrolet C1500, Silverado, Blazer, S10, and Suburban applications, along with GMC C/K trucks, Jimmy, Sonoma, and Yukon models. It also covers select Ford Mustang, Thunderbird, LTD, and F-Series applications, plus classic Pontiac, Buick, Oldsmobile, Cadillac, Chrysler, Dodge, Jeep, Nissan, Toyota, and Lincoln vehicles. If you are searching for a dome light bulb for a 1993-2001 Chevrolet Silverado 1500 or a 1987-1991 GMC C1500, 1003LLB2 is listed for those interior lighting applications.

Common Uses

• Restores dim, burned-out, or intermittent dome lighting
• Replaces a failed interior lamp bulb in older GM trucks and SUVs
• Improves cabin visibility for map reading and entry lighting
• Addresses flickering caused by an aging interior bulb
• Supports maintenance on classic and daily-driver vehicles with dome lamp service needs

Installation Notes

Verify the bulb base, contact layout, and voltage match your original dome light bulb before installation. This bulb uses a twist-type BA15s base, so it should be matched to the existing socket style in the vehicle’s interior lamp assembly. Confirm fitment by year, make, and model, especially on older Chevrolet and GMC trucks, where interior lighting configurations can vary by trim and body style.

Quality Assurance

Phillips LongerLife bulbs are positioned for drivers who want dependable value from an interior replacement bulb. The 1003LLB2 part number helps confirm the correct application when ordering for dome light service.