Choose Options Quick view 5 pcs/pack Diode Trio D985 171-12011 D985 MSRP: Now: $15.90 Was: Diode TrioReplace OEM(s): DelcoFor: Delco 17SI Series 120A, 19SI, 21SI Series IR/EF AlternatorssUsed On: Delco 17SI 120A & 21SI AlternatorsCondition: NewNotes 3: DelcoHeavy Duty High Temperature... MSRP: Now: $15.90 Was: Choose Options Quick view