4PCS OE Style Headlight Assembly with Bumper Lamps - Compatible with 2003-2007 Chevy Silverado & Avalanche (Non-Cladding Models) - Black Housing with Amber Corner - Driver & Passenger Side - Perfect for Night Driving & Off-Road Adventures

I live in Arizona and own 3 trucks that use these headlight assemblies.As a "functional test" I installed all three assemblies on the same trucks at the same time (+/- within an hour of each installment per truck).Two trucks are work trucks and are always outside with the front ends facing south, which is brutal on lexan in Phoenix. The third truck is my personal driver which is always garaged.This last week, I took my tried and true opacity/light meter out to the outside parked trucks, pulled out a headlight from each of the outside parked trucks stuck the remote probe through a headlight bulb hole, faced into noon sun and compared it to my lightly used driver, (is really a "garage queen").After two months of installation, the outdoor parked truck headlight assemblies lost 1-1.2 % opacity/light transmission vs. no measurable loss on the garage queen.At this rate, they'll be hard to project usable stock Syllvania headlight lumens in about 3 years.For the price paid, ease of installation, and correct fit, these assemblies are a smoking deal at the current price.As a side note, to the folks that review these assemblies saying the headlight assemblies let "moisture or water in" need to check the foam gasket around their existing headlight/marker light bulbs. The integrity of the projector (headlight assembly) isn't a water barrier, the foam o rings around the headlight/marker light harness is !Replace your foam o rings around your headlight/marker light harnesses every 24-36 months (depending on where you regularly drive your vehicle, hotter dry climate, 24 months, cooler wetter climate,36 months) and I guarantee you'll never have moisture instrusion in your headlight/marker assembly again.Bought these in June 2020. You can adjust but not to where they need to be, I drive around with high beams on and never bother people cuz beams point down. No October 2022 they have begun to yellow. I even put extra silicone around back side of lens to prevent moisture getting in I wouldn't buy agaiThe product was a great value for the money and easy to installAdjuster broke. Can’t adjust headlight correctlyI got these on a 1500 04 silverado. Look great no leaks my bulbs went in with an extremely tight fit. So it did take some effort to turn them... keeps the moisture out though. Mine came and was a great quality I looked them over for and spots that might leak. I couldn't be happier with themAfter a year or 2 I am no longer happy with these lamps... they cracked from cold weather and the driver side marker light keeps falling out cause the clip melted.... no idea how it got so hot that 1 piece was melted soft the the point it has no spring to keep it in. They glossed over very quickly and are no longer shiny. They just loom terrible like a cheaply built truck... now I need new lamps and I wont be buying these againI cannot brag about this product enough. I’m SUPER happy with these headlights. They were a perfect fit and took about thirty minutes to install. One note of caution if you do not get the bottom tabs in the holes that is cut out for them you WILL have issues. It’s a little challenging to do this because you can’t see the holes/slots during installation because the headlight obscures them.Worked great for me. The bottom does require a file or sand paper to trim the tab so it secures snug. The top gone in without an issue. For the people with adjustment problems, please take your time went turning Jiggle/turn to adjust correct way then turn back to releave preassure otherwise you will break the screw. Otherwise, they work great with zero problems.Update : 02/22/2020These l8ghts have been on the truck since i recieved them. They do still work fine, however it does appear its yellowing from the side. Straight on, they are ok. After a while of night driving, they show to have adjustment issues. They like to aim completely on the passengers side. No or hardly light to the drivers on low. High beams. They work great. For this reason, I must mark against it. Overall they are great, function is almost there. Just a tad short.Easy to install but driver side running light is holding water