"Dusty" my 2000 GMC Sierra K1500 Pickup needs a new alternator, as the original one is making noise. He's got 135,000 miles on his 5.3L engine, so the alternator bearings and/or brushes are probably getting worn out at this point. The RPO Code sheet says he has the 105 amp K68 code alternator. I want to replace the alternator with an AC Delco (unless there's a better quality aftermarket brand that I should consider...). The AC Delco website catalog came up with two different alternators that may fit:
#321-2104, 105 AMP(K68), PROD GEN 10480388, DELCO SERIES AD230, 6S PULLEY ($293.77 on Amazon)
#334-2491A, Family DE-AD230, Unit MFR DE, Amps 105, Pulley 6S, Fan IF, Regulator IR, Clock 11:30, w/ Delco 105 amp alt., 334-2491A, 6Y1, 0050A (139.88 on Amazon)
Amazon.com has both of these alternators and says that they both fit my GMC Pickup. Unfortunately, one is about $300! The other one is $140. From photos I took of the alternator and comparing them to the $140 one's photos, they seem to match. But the number I tried to read off of the alternator case looks like it matches the almost $300 one (PROD GEN 10480388)!
Am just wondering what the difference in price would be. The AC Delco catalog says the #321-2104 is OEM and the other one (#334-2491A) is in the "Professional" line. I hope I don't end up having to buy the $300 one! OUCH!!!!
Or should I look into a NAPA or other aftermarket alternator instead? I've read that most GM vehicles are better off getting their electrical parts replaced with the AC Delco brand. But then I've read that the AC Delco brand's quality isn't what it used to be. So I don't know what I should do. Any suggestions or advice would be greatly appreciated! Thanks.
Maggie
#321-2104, 105 AMP(K68), PROD GEN 10480388, DELCO SERIES AD230, 6S PULLEY ($293.77 on Amazon)
#334-2491A, Family DE-AD230, Unit MFR DE, Amps 105, Pulley 6S, Fan IF, Regulator IR, Clock 11:30, w/ Delco 105 amp alt., 334-2491A, 6Y1, 0050A (139.88 on Amazon)
Amazon.com has both of these alternators and says that they both fit my GMC Pickup. Unfortunately, one is about $300! The other one is $140. From photos I took of the alternator and comparing them to the $140 one's photos, they seem to match. But the number I tried to read off of the alternator case looks like it matches the almost $300 one (PROD GEN 10480388)!
Am just wondering what the difference in price would be. The AC Delco catalog says the #321-2104 is OEM and the other one (#334-2491A) is in the "Professional" line. I hope I don't end up having to buy the $300 one! OUCH!!!!
Or should I look into a NAPA or other aftermarket alternator instead? I've read that most GM vehicles are better off getting their electrical parts replaced with the AC Delco brand. But then I've read that the AC Delco brand's quality isn't what it used to be. So I don't know what I should do. Any suggestions or advice would be greatly appreciated! Thanks.
Maggie
