Review on 🔌 High-Quality DB Electrical ADR0121 Alternator for GMC C/K/R/V Series Pickups 1989-1992: Compatible Replacement with Multiple Part Numbers 1-1629-21DR, 400-12117, 240-5032, 90-01-4179, 90-01-4646, 90-01-4179, 8165-7N-6G by Thong Lopez

Original review: This replacement is much louder than the original but it doesn't bother me enough to make me wish I'd spent more on the acdelco. Updated Review: I don't drive this truck more than 100 miles a week and the bearing broke and flew out the back of the unit in less than 13 months of use. Save time and hassle and spend a little more on OE. Three days later, the support team doesn't respond, which seems to match other people's experiences. I strongly recommend staying away from this company's products. I will NEVER buy them again.