• Comes as a PAIR
    • Fits both LH (Driver Side) & RH (Passenger Side)
  • Include lenses and housings
  • Replaces dealer part numbers: 10319776, 10319777
  • Correct for both models with or without cornering lamps
Fit guaranteed
  • This pair of headlamps will install just as your originals do. You can use your existing hardware and wiring harnesses.
  • Save time and money with a direct fit. No trips to the hardware store or extra time trying to get the wiring to hookup.
  • 1A Auto has the most comprehensive warranty.
  • If this headlight set should fail to provide satisfactory performance you may exchange it.
  • 1A Auto Headlights are guaranteed to pass inspections in all 50 states. DOT (U.S. Dept. of Transportation) and SAE (Society of Automotive Engineers) approved.
  • Replacing discolored, scratched, dull or damaged headlights with a new pair from 1A Auto can increase your resale value by up to 10%.
  • A new pair of headlights can provide you with up to 50% more illumination than a dull, yellowed, sandblasted, broken or scratched headlight.
    • 1A Auto headlights can help you see farther at night and in poor driving conditions.
    • A new pair of headlights from 1A Auto can make you more visible to other traffic during heavy rain or wintry weather.
Direct Fit Replacement

Direct fit replacement for OEM assembly

Trouble-free Installation

Uses same wiring as original assembly.  No cutting or splicing required.

DOT and SAE Compliant

Meets federal regulations for on-road use

Part Details

  • Quantity: Pair

Lifetime Warranty

This item is backed by a Limited Lifetime Warranty. In the event this item should fail due to manufacturing defects during intended use, we will exchange the part free of charge (excludes shipping charges) for the original purchaser.

Bulb Note:

These lights do not include bulbs. Occasionally lighting manufacturers do leave test bulbs in the lights. If you happen to receive a lighting product (Headlight, Tail light, Parking light, Fog light etc.) that comes with the bulbs, the bulbs are not covered under our warranty. Our warranty applies only to the light assembly.

  1. step : Handling the Bulbs (0:44)
    • Note: DO NOT TOUCH the bulbs- the oil from your fingers will burn into the light and foul your bulb.
    • Clean with rubbing alcohol and a soft cloth if the bulbs do get touched.
  2. step : Remove the headlight assembly (0:45)
    • Pull up and remove the two anchor tabs.
    • Pull out the headlight assembly.
    • Unplug the harness.
    • You can access the bulbs and replace them from here if needed.
  3. step : Install headlight assembly (1:30)
    • Plug in the harness.
    • Put the headlight assembly back into place.
    • Clip it in with the two anchor tabs.
    • Close the hood and enjoy your new 1A Auto headlights.

Tools needed for replacement:

    1A - No Tools Needed

  • No Tools Needed

4.6 / 5.0
21 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
perfect fit
headlight assembly was exact fit. took longer to unpack than replace!
May 16, 2018
3 months ago
Headlight purchase
The sales rep was very helpful and made my purchase Swift and easy. I have not had the headlights applied yet. Hopefully today
May 13, 2018
3 months ago
Great job on those headlights
I totally impressed my family when I showed them my newly acquired “mechanical skill” by installing the new headlights on our old 1999 Buick. Couldn’t have been so brave without the video however!! Makes the car feel like new!
April 30, 2018
4 months ago
2000 buick regal headlight assemblies
The product arrived exactly as described on the web site. After about fifteen minutes I had both headlights installed and they worked great. Installation would have been even quicker if the one mounting flange wasn't bent. I would recommend buying these.
March 12, 2018
5 months ago
Awesome and reasonable
Got the pair complete left and right assemblies for our 2000 Buick Century Custom. Easy to Install and clear. Great lights now. By the way these come with all bulbs already insralled. If you replaced your dim and bright and turn bulbs separately you would pay more. This way you have it all. Item's came fast
January 30, 2018
6 months ago
Replacing headlight assembly
I Ordered the headlights over the phone for my 1999 Buick. I was confident she helped order the right lights. Video made it easy to remove and replace the old lights. I was proud of A-1 Auto and myself.
January 27, 2018
7 months ago
As expected
I got my order pretty quick, no hassles or payment issues. So far they work great.
January 15, 2018
7 months ago
retaining clips
really did not need them but I am going to keep them just in case
December 22, 2017
8 months ago
Thank you ! Nice headlamps lights and i received just on time to use my car
November 19, 2017
9 months ago
Great looking headlights.
Great looking headlights. they even have side turning lights that my old lights did not have. Fast delivery, well packaged.
November 15, 2017
9 months ago
Start typing your question and we'll check if it was already asked and answered. Learn More
Browse 1 question Browse 1 question and 10 answers
Does It Come With Bulbs?
Thad E on Oct 15, 2016
BEST ANSWER: test bulbs usually installed but recommend replacing them before installing into your car.

Vehicle Fit

  • 1997-2005 Buick Century Headlight Pair
  • 1997-2004 Buick Regal Headlight Pair

This part replaces:

  • OE # 10319777
  • OE # 10319776
  • Partslink GM2503182, GM2502182
Part #: 1ALHP00078

Order must be placed by 4pm ET

How-to Video:

(02:16 min)