This replacement tail light is just what you need to get your vehicle in good looking form again!


  • Fits LH (Drivers Side)
  • Replaces dealer part number: 15858151
  • Includes Lens & Housing
  • DOT (Department of Transportation) & SAE (Society of Automotive Engineers) approved
  • Direct replacement
  • LED Style

This tail light makes a great replacement and has good cost savings over a dealer unit.


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:

Unless otherwise noted, our lights do not include bulbs, though occasionally lighting manufacturers do include 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.

1.0 / 5.0
1 Review
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1 Stars
Tail light
I bought this new and intstalled great but when I put the blinker are the radio would cut out with the blinker and also when you hit the brakes with radio on or a a stop light the radio goes static !! Buy factory tail light everything else I bought from a1 works great !!! but i am not sure I would buy electronics from China !!!! And definetlly don't buy this taillight
April 1, 2016
over 2 years ago
Response from 1A Auto
I checked for reports on this specific taillight, and am not showing any know issues with the electrical aspect of the tail light. It seems this is a defect, which is unfortunate but does happen in manufacturing. Can you please contact Customer Service at your nearest convenience and we will be more than happy to get you a free replacement or a complete refund for the part as you are still inside the 60 day warranty. Our number is 888-844-3393
April 5, 2016
Derek C Staff
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Vehicle Fit

  • 2006-2011 Cadillac DTS LED Tail Light Driver Side

This part replaces:

  • Partslink GM2818181
  • Hollander 166-0155L, 166-00488L
  • OE # 15858151
  • DEPO 332-1944L-AS
Part #: 1ALTL01023

Ships Same Day for orders placed by 4 P.M. ET