Phillips H4666LLC1 Headlight Bulb - High Beam and Low Beam

Phillips H4666LLC1 Halogen Headlight Bulb

The Phillips H4666LLC1 is a halogen sealed beam headlight bulb built for drivers who want value-focused replacement lighting with direct fitment for select vehicles. It is DOT approved, street legal, and uses clear glass construction with a 12.8-volt halogen design for high beam and low beam applications.

Phillips LongerLife - Single Commercial Pack is the product line for drivers looking for a practical lighting replacement with extended service focus. This sealed beam headlight bulb is made for vehicles that use a 3-contact-lug base and a C-6 filament layout, making it a direct option for many older sealed beam headlamp systems.

• Halogen headlight bulb with clear finish
• DOT approved and street legal
• High beam and low beam beam type
• 12.8-volt electrical rating
• 65/45 watt sealed beam design
• Glass bulb material with 3-contact-lug base
• Phillips part number H4666LLC1

Fitment and Application Details

Compatible With select sealed beam headlamp applications across Chevrolet, Ford, Geo, GMC, Pontiac, Saturn, Dodge, Mitsubishi, Toyota, Mercury, Chrysler, Plymouth, and Honda models. Fits 1995-1997 Chevrolet Blazer, High Beam and Low Beam; Fits 1995-1997 Chevrolet S10, N/A; Fits 1994-1997 Chevrolet S10, High Beam and Low Beam; Fits 1993-1997 Ford Probe, High Beam and Low Beam; Fits 1989-1997 Geo Metro, High Beam and Low Beam; Fits 1995-1997 GMC Jimmy, High Beam and Low Beam; Fits 1994-1997 GMC Sonoma, High Beam and Low Beam; Fits 1995-1997 Pontiac Firebird, N/A; Fits 1991-1997 Pontiac Firebird, High Beam and Low Beam; Fits 1995-1997 Pontiac Firefly, N/A; Fits 1994-1997 Pontiac Firefly, High Beam and Low Beam; Fits 1987-1991 Pontiac Firefly, High Beam and Low Beam; Fits 1993-1996 Saturn SC2, High Beam and Low Beam; Fits 1991-1995 Dodge Dakota, High Beam and Low Beam; Fits 1991-1994 Mercury Capri, High Beam and Low Beam; Fits 1988-1994 Toyota Tercel, High Beam and Low Beam; Fits 1991-1993 Dodge Stealth, High Beam and Low Beam; Fits 1991-1993 Mitsubishi 3000GT, High Beam and Low Beam; Fits 1992 Chevrolet Metro, High Beam and Low Beam; Fits 1989-1992 Chevrolet Sprint, High Beam and Low Beam; Fits 1991-1992 Dodge Caravan, High Beam and Low Beam; Fits 1991-1992 Saturn SC, High Beam and Low Beam; Fits 1987-1991 Chrysler Daytona, High Beam and Low Beam; Fits 1987-1991 Dodge Daytona, High Beam and Low Beam; Fits 1990-1991 Mitsubishi Eclipse, High Beam and Low Beam; Fits 1990-1991 Plymouth Laser, High Beam and Low Beam; Fits 1987-1990 Dodge Dakota, High Beam and Low Beam; Fits 1987-1988 Dodge Shadow, High Beam and Low Beam; Fits 1987-1988 Plymouth Sundance, High Beam and Low Beam; Fits 1984-1985 Honda Civic, High Beam and Low Beam.

What This Bulb Helps Address

• Dim or aging sealed beam headlight output
• Failed high beam or low beam operation
• Street-legal replacement needs for older vehicles
• Restoration of lighting on sealed beam headlamp systems
• Replacement for worn glass halogen headlight assemblies

Installation Notes and Tips

Verify the vehicle uses a sealed beam headlamp setup with a 3-contact-lug base before ordering. Confirm the bulb position and beam type against the vehicle listing, especially on applications marked High Beam and Low Beam or N/A. Handle the glass bulb carefully during installation and avoid touching the lens surface with bare hands.

Quality Assurance

This Phillips headlight bulb is DOT approved and street legal for the listed applications. Part number H4666LLC1 is built as a halogen sealed beam replacement for direct-use lighting service on supported vehicles, including Chevrolet S10, Pontiac Firebird, and Honda Civic applications.