ACDelcoGold 335-1086 Alternator

Really nice looking alternator, very simple install. functional & good voltage power, worth the value. Kepps battery charged very well. Fits perfect on any Chevy with a 105amp alternator.----2003 Silverado 1500 4x4, 5.3 LS----1 - Pop open beer...2- remove air filter3- loosen the belt ( belt tensioner ) ( 15mm )4- remove the 2 screws through the front ( 15mm )5- might need to use crowbar to lift out old alternator / put in new one6- unplug the 2 plugs in back7- replace with new alternator ( might need some massaging to put in )8- do step 6 -through 1 to finish install

This was a perfect fit for my 2002 Suburban. Took about 45 minutes from start to finish, and worked perfectly. This was one of the best priced options so I'm glad we choose this one from a long list of options. If it lasts half as long as the original one did, I'll call it a great value.

It’s genuine ACDelco, fits as expected and runs like it should for an amazing price compared to buying anything aftermarket at any local parts store.

Like others mentioned, this new alternator does NOT have the raised “Delco” casting. It’s just how things are anymore. Most everything I buy, minus belts, seem to be made wherever anymore. So I don’t know how you guarantee build quality.Having said all that…here’s what I know. Local part houses have house brand reman alternators for $40-110 MORE than this NEW alternator. No core charge online. Local parts ranged in country of origin vary too….even within the same brand!So I bet on new AC Delco. Figure it’s a crap shoot so why not save some cash on a “traditionally solid” brand instead of reman house brand.Worked right away. No noises, 14.4 volts. I am satisfied with this purchase.No comment on longevity…my 2003 Suburban 5.3 got 201,000 out of the original Delco!!!I love my truck.If this gives me trouble I’ll update my post.Just really don’t like house brand remanufacturingHope this helps others out. I don’t see parts suppliers improving…so this is my logic for keeping my truck on the road..Pics of new one, pics of old one. For perfectly.Never grind ears down. Tap the spacers towards the front of the truck once you pry old alt out. Then new alt slips in easy. Tightening the two bolts will bring spacers back tight against alt. It’s a great system! Chevy built great drivelines in 2000-2006.

This alternator worked well while it lasted, but 2 years and 5 months after it was installed it failed. It only output 11v, constantly killed the battery and left me stranded on the side of the road. I was expecting at least 5 years out of this since it is a GM ACDelco alternator. The original alternator it replaced lasted for 18 years. I guess when they build the cars they use better parts. Funny that it failed right after the 2 year GM warranty. I decided to buy an Autozone Duralast alternator that has a lifetime replacement warranty if it ever fails. I also opted for the 145Amp. The original and this one is a 105AMP.

I was pretty impressed. Usually when you buy something used or remanufactured you don't have the best luck sometimes and they look like you know they've been beaten on or something. This thing look brand new ,from install to today's date. This has had a stellar performance even through the brutal winter so this was a pretty good purchase. Very satisfied with the quality and the ease of install

For the price, you really can't beat this. I bought this for my '03 Chevy Silverado 2500HD w/ 6L (LQ4), which it fit as expected. Removal/install took me about 15 minutes, not including replacing the pulley (see below).Pros:Seems well built. Brand new-not a poorly re-manufactured unit like most other units at and above this price. Easily installed on the LQ4's accessory drive.Cons:Pulley was damaged upon arrival (one of the ridges was nicked, and unfortunately there was a slight bulge into one of the grooves, which would likely damage the serpentine belt) . Not wanting to go several more days without a working alternator, I decided to swap the pulley from my old alternator onto this unit instead of returning it. Given the price, I really can't complain too much on this issue. Alternator is assembled in Mexico. That's better than Made in China, but made in USA is always preferred if possible!Other thoughts:For those of you replacing one of these on the GM 6.0L truck engine, the following may prove helpful: You will likely need to pry the old one out. Just stick a prybar under the old alternator and pry it upward. (after removing the serpentine belt, of course!) Once you've worked it out, I found that it's easier to get the new one in if you take a hammer and gently work the little sleeves in the front holes of the mount towards the front of the truck (you just need a millimeter or so of movement. They'll snug back up to their original position when you install the new alternator). If you don't push these forward, the new alternator can be very hard to reinstall. (Of course, I'm not responsible if you break the mount or damage anything else while doing this!) Hopefully this helps someone.