OEG Parts New Alternator High Output 255 AMP Compatible With Chevy Chevrolet C Silverado Truck Van Isuzu Hummer Saab 6.0L 6.6L 8.1L 99-15 10464405 10464443 10464453 10464456 10464476 15263859 19151921

Upon receiving.the alternator I was impressed by its fit and easy install.Works great.

Worked good for a week then battery light comes on and msg saying battery not charging. Replaced my yellow top optima thinking it was that and spent 400 on a SX agm 1300 amp battery and same issue so its definitely this crap alternator Whats worse is stock belt wont work. Needs to be an inch longer.

Made all the amps possible

Update: First one has failed at 1 yr 3 months. I went ahead and ordered a second one that I installed today and is working fine. Highly suggest the square trade warranty. They made it good. (Full disclosure, this alternator got a lot of use so this wasn’t totally unexpected that there would be a fail within a year or two. Super easy to replace, so not a big deal for me)Worked for what I bought it for. I am hopeful that it will have good longevity. I added a second battery and an isolator to run a 1000 watt pure sine inverter. Has no issue bringing a deep cycle battery back to full charge very quickly. You will need the longer belt that goes with the 160 amp stock alternator option. This was installed on a 2000 Chevy Silverado. Battery and inverter will run a 350 watt space heater for about 30 minutes. After draining the battery beyond operating the inverter it took the alternator about 15 minutes to fully recharge it with normal driving. I would recommend tuning the idle speed to at least 800 rpms if you want this unit to hold in the 13.5-14.5 range with a heavy load on it. I have found that it will run the heater on 750 watt mode indefinitely and keep everything else going at about 13.8 - 14.2 volts as long as the engine is running 800 rpm or higher. Full wiring disclosure: 1/0 from auxilliary battery to isolator. 1/0 from isolator to primary battery power tap. 1/0 from power tap to alternator. I left the stock power system as is. I ran 4 awg from the auxiliary side of the isolator to the inverter. I protected that run with a 200 amp breaker/disconnect at the isolator.

Looks good. Performs will a $400 unit. I will see how long it lasts running as warm as it does !

I bought this to upgrade my 2000 Silverado after I added a Lincoln electric fan. When the a/c came on at idle the stock alternator could not keep up. The battery dropped to 12 volts.This alternator helped, but when I added the 1.9 inch pulley I can idle with the air, lights and 200 watts of off road lights and the battery sits at 13 volts or more.UPDATE: March 2022 and over 500,000 miles on pickup. I have had a better cooling dual fan on the radiator, more lights to see at night (I’m old) and this alternator has kept up with it all with no issues or problems. I’d say I made a good investment in this product.

Less than 12 hours after I installed it this alternator is maxing out my volts gauge and sounds like it's full fielding itself! I contacted Amazon and they told me to contact the seller for warranty.. I contacted the seller and they said I have to go through Amazon! I am just going to put my old lower amp one on and hope it works. Do yourself a favor and avoid the potential runaround and don't buy!

nice powerfull alt, good upgrade for cheap, easy install on my astro even though this is a larger case alt...not a high rpm unit, good charging at low rpm because it has a larger pulley, slightly larger belt may be required.