• 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

Light uses same wiring as the original assembly, providing easy, trouble-free installation.  No cutting or splicing required.

DOT and SAE Compliant

DOT & SAE compliant: meets federal regulations for on-road use

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. Please keep your invoice for proof of this warranty.

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
18 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Stars
1999 Buick Century headlamps, replacement of
I could hardly believe how simple it was to disconnect the old lamb and install the new. No tools needed.
October 16, 2016
over 3 years ago
Good and bad.
Came with missing caps on the one side. I wanted to upgrade to LED headlights which fit in my Buick original but not these.
January 23, 2017
1 year ago
2002 Buick headlights
Thanks 1A Auto
I received my new headlights in 3 days and the installation only took about 15 minutes. The alignment for the lights was done that evening and took about 20 minutes. They look great and driving at night is a lot easier.
Dale G.
April 15, 2017
1 year ago
The installation of the two headlights was very simple and easy. All it took was pulling two holding clips on each lamp assembly and putting the new set into its place and inserting the two clips. That simple.
October 3, 2017
7 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
3 months ago
Great service good headlight set. Can't believe order arrived so quickly
March 22, 2017
1 year 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
5 months ago
My New Headlights
I LOVE my new headlights!!! I can now see at night. I had no idea the difference they would make. AND they make my old car look great!
They were very easy to install, about 15 minutes from box to car. Done! WOW!!!
Thank you for a wonderful product and a great price!!!
August 1, 2017
9 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
1 month 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
3 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

How-to Video:

(02:16 min)