Sylvania
SYLVANIA Basic Box

Sylvania H4703.BX Headlight Bulb - Low Beam

Brand Sylvania H4703.BX
Position Low Beam
Voltage 12.80
DOT Approved Yes
Filament Quantity 1
Street Legal Yes
Bulb Base Type G-2
Length 3.35
Bulb Type H4703
Average Rated Life 500
Bulb Material Glass
Amperage Rating 4.30
Bulb Technology Halogen
Bulb Finish Clear
Wattage 55.00
Product line SYLVANIA Basic Box
Fits Buick, Chevrolet, Chrysler, Geo, GMC, Isuzu, Jeep, Oldsmobile, and Pontiac · 166 vehicles

Halogen technology. Provides bright roadway illumination with a clear glass bulb.

Street legal. DOT approved for compliant exterior lighting use.

XtraVision® bulbs. Brighter than SYLVANIA Basic bulbs for improved visibility.

Cross-references Sylvania H4703.BX for the same application. See all 1.

$27.76Free shipping
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Free returns within 60 days if it doesn't fit when fitment is verified.

Sylvania H4703.BX Low Beam Headlight Bulb

The Sylvania Basic Box H4703.BX is a 12.8V halogen headlight bulb for low beam applications. It is built for street-legal use and DOT approval, with clear glass construction and a 55W output for direct replacement service on select vehicles.

Key Features

  • Halogen headlight bulb with H4703 bulb type and G-2 base
  • 12.8V, 55W electrical rating for low beam use
  • DOT approved and street legal
  • Clear glass bulb finish
  • Single-filament design
  • Average rated life: 500 hours
  • Part number: H4703.BX

Product Line Details

SYLVANIA Basic Box is the brand line for straightforward replacement lighting. This H4703.BX bulb follows that approach with a standard halogen design for drivers replacing a failed low beam bulb on vehicles such as the Pontiac Firebird, Chevrolet G20, and GMC Jimmy.

Compared with higher-output lighting options, this bulb focuses on direct-fit replacement and consistent roadway illumination. The manufacturer describes the XtraVision family as offering brighter roadway light than Basic bulbs; this Basic Box listing is the standard replacement version identified by part number H4703.BX.

Fitment

  • Fits 1998-2002 Pontiac Firebird, low beam.
  • Fits 1992-1996 Chevrolet G30, low beam, with Quad Headlights.
  • Fits 1992-1996 GMC G3500, low beam, with Quad Headlights.
  • Fits 1992-1995 Chevrolet G10, low beam, with Quad Headlights.
  • Fits 1990-1995 Chevrolet G20, low beam, with Quad Headlights.
  • Fits 1992-1995 GMC G1500, low beam, with Quad Headlights.
  • Fits 1992-1995 GMC G2500, low beam, with Quad Headlights.
  • Fits 1989-1994 Pontiac Sunbird, low beam, with Sealed Beam Headlights.
  • Fits 1990-1993 Chrysler Imperial, low beam.
  • Fits 1993 Chrysler New Yorker, low beam.
  • Fits 1986-1992 Oldsmobile Toronado, low beam.
  • Fits 1989-1991 Chevrolet Blazer, low beam, with Quad Headlights.
  • Fits 1988-1991 Chevrolet C1500, low beam, with 4 Rectangle Headlights.
  • Fits 1988-1991 Chevrolet C2500, low beam, with 4 Rectangle Headlights.
  • Fits 1988-1991 Chevrolet C3500, low beam, with 4 Rectangle Headlights.
  • Fits 1988-1991 Chevrolet K1500, low beam, with 4 Rectangle Headlights.
  • Fits 1988-1991 Chevrolet K2500, low beam, with 4 Rectangle Headlights.
  • Fits 1988-1991 Chevrolet K3500, low beam, with 4 Rectangle Headlights.
  • Fits 1989-1991 Chevrolet R1500 Suburban, low beam, with Quad Headlights.
  • Fits 1989-1991 Chevrolet R2500 Suburban, low beam, with Quad Headlights.
  • Fits 1989-1991 Chevrolet R3500, low beam, with 4 Rectangle Headlights.
  • Fits 1989-1991 Chevrolet V1500 Suburban, low beam, with Quad Headlights.
  • Fits 1989-1991 Chevrolet V2500 Suburban, low beam, with Quad Headlights.
  • Fits 1989-1991 Chevrolet V3500, low beam, with 4 Rectangle Headlights.
  • Fits 1990-1991 Geo Storm, low beam.
  • Fits 1988-1991 GMC C1500, low beam, with 4 Rectangle Headlights.
  • Fits 1988-1991 GMC C2500, low beam, with 4 Rectangle Headlights.
  • Fits 1988-1991 GMC C3500, low beam, with 4 Rectangle Headlights.
  • Fits 1989-1991 GMC Jimmy, low beam, with Quad Headlights.
  • Fits 1988-1991 GMC K1500, low beam, with 4 Rectangle Headlights.
  • Fits 1988-1991 GMC K2500, low beam, with 4 Rectangle Headlights.
  • Fits 1988-1991 GMC K3500, low beam, with 4 Rectangle Headlights.
  • Fits 1989-1991 GMC R1500 Suburban, low beam, with Quad Headlights.
  • Fits 1989-1991 GMC R2500 Suburban, low beam, with Quad Headlights.
  • Fits 1988-1991 GMC R3500, low beam, with 4 Rectangle Headlights.
  • Fits 1989-1991 GMC V1500 Suburban, low beam, with Quad Headlights.
  • Fits 1989-1991 GMC V2500 Suburban, low beam, with Quad Headlights.
  • Fits 1988-1991 GMC V3500, low beam, with 4 Rectangle Headlights.
  • Fits 1985-1990 Jeep Wagoneer, low beam.
  • Fits 1989 Buick Skyhawk, low beam.
  • Fits 1989 Chevrolet R2500, low beam, with 4 Rectangle Headlights.
  • Fits 1988-1989 GMC R2500, low beam, with 4 Rectangle Headlights.
  • Fits 1988-1989 Isuzu Impulse, low beam.
  • Fits 1986-1988 Buick Century, low beam.
  • Fits 1988 Chevrolet R20, low beam, with 4 Rectangle Headlights.
  • Fits 1988 Chevrolet R30, low beam, with 4 Rectangle Headlights.
  • Fits 1988 Chevrolet V30, low beam, with 4 Rectangle Headlights.
  • Fits 1986-1987 Buick Riviera, low beam.

What This Bulb Helps Address

  • Dim or aging low beam output
  • Failed headlight bulb replacement needs
  • Restoring legal road lighting on equipped vehicles
  • Maintaining proper low beam function on quad-headlight setups
  • Replacing a worn halogen bulb with the correct H4703 fitment

Installation Notes and Tips

Confirm the vehicle uses the H4703 bulb type and low beam position before installation. This bulb is used on select Chevrolet, GMC, Pontiac, Buick, Jeep, Chrysler, Geo, and Isuzu applications, including models such as the Chevrolet C1500, GMC Jimmy, and Pontiac Firebird. Handle the glass bulb carefully and avoid touching the glass surface with bare fingers during installation.

Quality Assurance

This bulb is DOT approved and street legal, with halogen construction and a standard 12V electrical design for regulated exterior lighting use. Part number H4703.BX is the identifying reference for ordering and fitment verification.

This part fits 166 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelPositionNotes
2002PontiacFirebirdLow BeamSYLVANIA Basic Box
2001PontiacFirebirdLow BeamSYLVANIA Basic Box
2000PontiacFirebirdLow BeamSYLVANIA Basic Box
1999PontiacFirebirdLow BeamSYLVANIA Basic Box
1998PontiacFirebirdLow BeamSYLVANIA Basic Box
1996ChevroletG30Low Beamwith Quad Headlights; SYLVANIA Basic Box
1996GMCG3500Low Beamwith Quad Headlights; SYLVANIA Basic Box
1995ChevroletG10Low Beamwith Quad Headlights; SYLVANIA Basic Box
1995ChevroletG20Low Beamwith Quad Headlights; SYLVANIA Basic Box
1995ChevroletG30Low Beamwith Quad Headlights; SYLVANIA Basic Box
1995GMCG1500Low Beamwith Quad Headlights; SYLVANIA Basic Box
1995GMCG2500Low Beamwith Quad Headlights; SYLVANIA Basic Box
1995GMCG3500Low Beamwith Quad Headlights; SYLVANIA Basic Box
1994ChevroletG10Low Beamwith Quad Headlights; SYLVANIA Basic Box
1994ChevroletG20Low Beamwith Quad Headlights; SYLVANIA Basic Box
1994ChevroletG30Low Beamwith Quad Headlights; SYLVANIA Basic Box
1994GMCG1500Low Beamwith Quad Headlights; SYLVANIA Basic Box
1994GMCG2500Low Beamwith Quad Headlights; SYLVANIA Basic Box
1994GMCG3500Low Beamwith Quad Headlights; SYLVANIA Basic Box
1994PontiacSunbirdLow Beamwith Sealed Beam Headlights; SYLVANIA Basic Box
1993ChevroletG10Low Beamwith Quad Headlights; SYLVANIA Basic Box
1993ChevroletG20Low Beamwith Quad Headlights; SYLVANIA Basic Box
1993ChevroletG30Low Beamwith Quad Headlights; SYLVANIA Basic Box
1993ChryslerImperialLow BeamSYLVANIA Basic Box
1993ChryslerNew YorkerLow BeamSYLVANIA Basic Box
1993GMCG1500Low Beamwith Quad Headlights; SYLVANIA Basic Box
1993GMCG2500Low Beamwith Quad Headlights; SYLVANIA Basic Box
1993GMCG3500Low Beamwith Quad Headlights; SYLVANIA Basic Box
1993PontiacSunbirdLow Beamwith Sealed Beam Headlights; SYLVANIA Basic Box
1992ChevroletG10Low Beamwith Quad Headlights; SYLVANIA Basic Box
1992ChevroletG20Low Beamwith Quad Headlights; SYLVANIA Basic Box
1992ChevroletG30Low Beamwith Quad Headlights; SYLVANIA Basic Box
1992ChryslerImperialLow BeamSYLVANIA Basic Box
1992GMCG1500Low Beamwith Quad Headlights; SYLVANIA Basic Box
1992GMCG2500Low Beamwith Quad Headlights; SYLVANIA Basic Box
1992GMCG3500Low Beamwith Quad Headlights; SYLVANIA Basic Box
1992OldsmobileToronadoLow BeamSYLVANIA Basic Box
1992PontiacSunbirdLow Beamwith Sealed Beam Headlights; SYLVANIA Basic Box
1991ChevroletBlazerLow Beamwith Quad Headlights; SYLVANIA Basic Box
1991ChevroletC1500Low Beamwith 4 Rectangle Headlights; SYLVANIA Basic Box
1991ChevroletC2500Low Beamwith 4 Rectangle Headlights; SYLVANIA Basic Box
1991ChevroletC3500Low Beamwith 4 Rectangle Headlights; SYLVANIA Basic Box
1991ChevroletG20Low Beamwith Quad Headlights; SYLVANIA Basic Box
1991ChevroletK1500Low Beamwith 4 Rectangle Headlights; SYLVANIA Basic Box
1991ChevroletK2500Low Beamwith 4 Rectangle Headlights; SYLVANIA Basic Box
1991ChevroletK3500Low Beamwith 4 Rectangle Headlights; SYLVANIA Basic Box
1991ChevroletR1500 SuburbanLow Beamwith Quad Headlights; SYLVANIA Basic Box
1991ChevroletR2500 SuburbanLow Beamwith Quad Headlights; SYLVANIA Basic Box
1991ChevroletR3500Low Beamwith 4 Rectangle Headlights; SYLVANIA Basic Box
1991ChevroletV1500 SuburbanLow Beamwith Quad Headlights; SYLVANIA Basic Box
1991ChevroletV2500 SuburbanLow Beamwith Quad Headlights; SYLVANIA Basic Box
1991ChevroletV3500Low Beamwith 4 Rectangle Headlights; SYLVANIA Basic Box
1991ChryslerImperialLow BeamSYLVANIA Basic Box
1991GeoStormLow BeamSYLVANIA Basic Box
1991GMCC1500Low Beamwith 4 Rectangle Headlights; SYLVANIA Basic Box
1991GMCC2500Low Beamwith 4 Rectangle Headlights; SYLVANIA Basic Box
1991GMCC3500Low Beamwith 4 Rectangle Headlights; SYLVANIA Basic Box
1991GMCJimmyLow Beamwith Quad Headlights; SYLVANIA Basic Box
1991GMCK1500Low Beamwith 4 Rectangle Headlights; SYLVANIA Basic Box
1991GMCK2500Low Beamwith 4 Rectangle Headlights; SYLVANIA Basic Box
1991GMCK3500Low Beamwith 4 Rectangle Headlights; SYLVANIA Basic Box
1991GMCR1500 SuburbanLow Beamwith Quad Headlights; SYLVANIA Basic Box
1991GMCR2500 SuburbanLow Beamwith Quad Headlights; SYLVANIA Basic Box
1991GMCR3500Low Beamwith 4 Rectangle Headlights; SYLVANIA Basic Box
1991GMCV1500 SuburbanLow Beamwith Quad Headlights; SYLVANIA Basic Box
1991GMCV2500 SuburbanLow Beamwith Quad Headlights; SYLVANIA Basic Box
1991GMCV3500Low Beamwith 4 Rectangle Headlights; SYLVANIA Basic Box
1991OldsmobileToronadoLow BeamSYLVANIA Basic Box
1991PontiacSunbirdLow Beamwith Sealed Beam Headlights; SYLVANIA Basic Box
1990ChevroletBlazerLow Beamwith Quad Headlights; SYLVANIA Basic Box
1990ChevroletC1500Low Beamwith 4 Rectangle Headlights; SYLVANIA Basic Box
1990ChevroletC2500Low Beamwith 4 Rectangle Headlights; SYLVANIA Basic Box
1990ChevroletC3500Low Beamwith 4 Rectangle Headlights; SYLVANIA Basic Box
1990ChevroletG20Low Beamwith Quad Headlights; SYLVANIA Basic Box
1990ChevroletK1500Low Beamwith 4 Rectangle Headlights; SYLVANIA Basic Box
1990ChevroletK2500Low Beamwith 4 Rectangle Headlights; SYLVANIA Basic Box
1990ChevroletK3500Low Beamwith 4 Rectangle Headlights; SYLVANIA Basic Box
1990ChevroletR1500 SuburbanLow Beamwith Quad Headlights; SYLVANIA Basic Box
1990ChevroletR2500 SuburbanLow Beamwith Quad Headlights; SYLVANIA Basic Box
1990ChevroletR3500Low Beamwith 4 Rectangle Headlights; SYLVANIA Basic Box
1990ChevroletV1500 SuburbanLow Beamwith Quad Headlights; SYLVANIA Basic Box
1990ChevroletV2500 SuburbanLow Beamwith Quad Headlights; SYLVANIA Basic Box
1990ChevroletV3500Low Beamwith 4 Rectangle Headlights; SYLVANIA Basic Box
1990ChryslerImperialLow BeamSYLVANIA Basic Box
1990GeoStormLow BeamSYLVANIA Basic Box
1990GMCC1500Low Beamwith 4 Rectangle Headlights; SYLVANIA Basic Box
1990GMCC2500Low Beamwith 4 Rectangle Headlights; SYLVANIA Basic Box
1990GMCC3500Low Beamwith 4 Rectangle Headlights; SYLVANIA Basic Box
1990GMCJimmyLow Beamwith Quad Headlights; SYLVANIA Basic Box
1990GMCK1500Low Beamwith 4 Rectangle Headlights; SYLVANIA Basic Box
1990GMCK2500Low Beamwith 4 Rectangle Headlights; SYLVANIA Basic Box
1990GMCK3500Low Beamwith 4 Rectangle Headlights; SYLVANIA Basic Box
1990GMCR1500 SuburbanLow Beamwith Quad Headlights; SYLVANIA Basic Box
1990GMCR2500 SuburbanLow Beamwith Quad Headlights; SYLVANIA Basic Box
1990GMCR3500Low Beamwith 4 Rectangle Headlights; SYLVANIA Basic Box
1990GMCV1500 SuburbanLow Beamwith Quad Headlights; SYLVANIA Basic Box
1990GMCV2500 SuburbanLow Beamwith Quad Headlights; SYLVANIA Basic Box
1990GMCV3500Low Beamwith 4 Rectangle Headlights; SYLVANIA Basic Box
1990JeepWagoneerLow BeamSYLVANIA Basic Box
1990OldsmobileToronadoLow BeamSYLVANIA Basic Box
1990PontiacSunbirdLow Beamwith Sealed Beam Headlights; SYLVANIA Basic Box
1989BuickSkyhawkLow BeamSYLVANIA Basic Box
1989ChevroletBlazerLow Beamwith Quad Headlights; SYLVANIA Basic Box
1989ChevroletC1500Low Beamwith 4 Rectangle Headlights; SYLVANIA Basic Box
1989ChevroletC2500Low Beamwith 4 Rectangle Headlights; SYLVANIA Basic Box
1989ChevroletC3500Low Beamwith 4 Rectangle Headlights; SYLVANIA Basic Box
1989ChevroletK1500Low Beamwith 4 Rectangle Headlights; SYLVANIA Basic Box
1989ChevroletK2500Low Beamwith 4 Rectangle Headlights; SYLVANIA Basic Box
1989ChevroletK3500Low Beamwith 4 Rectangle Headlights; SYLVANIA Basic Box
1989ChevroletR1500 SuburbanLow Beamwith Quad Headlights; SYLVANIA Basic Box
1989ChevroletR2500Low Beamwith 4 Rectangle Headlights; SYLVANIA Basic Box
1989ChevroletR2500 SuburbanLow Beamwith Quad Headlights; SYLVANIA Basic Box
1989ChevroletR3500Low Beamwith 4 Rectangle Headlights; SYLVANIA Basic Box
1989ChevroletV1500 SuburbanLow Beamwith Quad Headlights; SYLVANIA Basic Box
1989ChevroletV2500 SuburbanLow Beamwith Quad Headlights; SYLVANIA Basic Box
1989ChevroletV3500Low Beamwith 4 Rectangle Headlights; SYLVANIA Basic Box
1989GMCC1500Low Beamwith 4 Rectangle Headlights; SYLVANIA Basic Box
1989GMCC2500Low Beamwith 4 Rectangle Headlights; SYLVANIA Basic Box
1989GMCC3500Low Beamwith 4 Rectangle Headlights; SYLVANIA Basic Box
1989GMCJimmyLow Beamwith Quad Headlights; SYLVANIA Basic Box
1989GMCK1500Low Beamwith 4 Rectangle Headlights; SYLVANIA Basic Box
1989GMCK2500Low Beamwith 4 Rectangle Headlights; SYLVANIA Basic Box
1989GMCK3500Low Beamwith 4 Rectangle Headlights; SYLVANIA Basic Box
1989GMCR1500 SuburbanLow Beamwith Quad Headlights; SYLVANIA Basic Box
1989GMCR2500Low Beamwith 4 Rectangle Headlights; SYLVANIA Basic Box
1989GMCR2500 SuburbanLow Beamwith Quad Headlights; SYLVANIA Basic Box
1989GMCR3500Low Beamwith 4 Rectangle Headlights; SYLVANIA Basic Box
1989GMCV1500 SuburbanLow Beamwith Quad Headlights; SYLVANIA Basic Box
1989GMCV2500 SuburbanLow Beamwith Quad Headlights; SYLVANIA Basic Box
1989GMCV3500Low Beamwith 4 Rectangle Headlights; SYLVANIA Basic Box
1989IsuzuImpulseLow BeamSYLVANIA Basic Box
1989JeepWagoneerLow BeamSYLVANIA Basic Box
1989OldsmobileToronadoLow BeamSYLVANIA Basic Box
1989PontiacSunbirdLow Beamwith Sealed Beam Headlights; SYLVANIA Basic Box
1988BuickCenturyLow BeamSYLVANIA Basic Box
1988ChevroletC1500Low Beamwith 4 Rectangle Headlights; SYLVANIA Basic Box
1988ChevroletC2500Low Beamwith 4 Rectangle Headlights; SYLVANIA Basic Box
1988ChevroletC3500Low Beamwith 4 Rectangle Headlights; SYLVANIA Basic Box
1988ChevroletK1500Low Beamwith 4 Rectangle Headlights; SYLVANIA Basic Box
1988ChevroletK2500Low Beamwith 4 Rectangle Headlights; SYLVANIA Basic Box
1988ChevroletK3500Low Beamwith 4 Rectangle Headlights; SYLVANIA Basic Box
1988ChevroletR20Low Beamwith 4 Rectangle Headlights; SYLVANIA Basic Box
1988ChevroletR30Low Beamwith 4 Rectangle Headlights; SYLVANIA Basic Box
1988ChevroletV30Low Beamwith 4 Rectangle Headlights; SYLVANIA Basic Box
1988GMCC1500Low Beamwith 4 Rectangle Headlights; SYLVANIA Basic Box
1988GMCC2500Low Beamwith 4 Rectangle Headlights; SYLVANIA Basic Box
1988GMCC3500Low Beamwith 4 Rectangle Headlights; SYLVANIA Basic Box
1988GMCK1500Low Beamwith 4 Rectangle Headlights; SYLVANIA Basic Box
1988GMCK2500Low Beamwith 4 Rectangle Headlights; SYLVANIA Basic Box
1988GMCK3500Low Beamwith 4 Rectangle Headlights; SYLVANIA Basic Box
1988GMCR2500Low Beamwith 4 Rectangle Headlights; SYLVANIA Basic Box
1988GMCR3500Low Beamwith 4 Rectangle Headlights; SYLVANIA Basic Box
1988GMCV3500Low Beamwith 4 Rectangle Headlights; SYLVANIA Basic Box
1988IsuzuImpulseLow BeamSYLVANIA Basic Box
1988JeepWagoneerLow BeamSYLVANIA Basic Box
1988OldsmobileToronadoLow BeamSYLVANIA Basic Box
1987BuickCenturyLow BeamSYLVANIA Basic Box
1987BuickRivieraLow BeamSYLVANIA Basic Box
1987JeepWagoneerLow BeamSYLVANIA Basic Box
1987OldsmobileToronadoLow BeamSYLVANIA Basic Box
1986BuickCenturyLow BeamSYLVANIA Basic Box
1986BuickRivieraLow BeamSYLVANIA Basic Box
1986JeepWagoneerLow BeamSYLVANIA Basic Box
1986OldsmobileToronadoLow BeamSYLVANIA Basic Box
1986RenaultEncoreLow BeamSYLVANIA Basic Box
1985JeepWagoneerLow BeamSYLVANIA Basic Box
Directly replaces or cross-references 1 part number
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
Sylvania — H4703.BX