View 5 Photos View 0 Videos Used Delco Remy 21SI Alternator With 7 Groove Pulley. 100 Amps 12V Recently Updated $100 USD USED DELCO REMY 21SI ALTERNATOR WITH 7 GROOVE PULLEY. 100 AMPS 12V, Core Charge: 0.00 ConditionUsedFits To Make(s)CATERPILLARFits To Model(s)3116Stock Number14653 MLS Number10275945CategoryAlternators Last Updated2/24/2026 LocationPhoenix, AZ, US Sold ByAmerican Truck Sales & Salvage (844) 882-___ SHOWNUMBERCall Seller Email Seller Save More Info