ORIGINAL NEW DELCO REMY 22SI HEAVY DUTY ALTERNATOR TRUCK 19020310 150 AMP 22 SI Delco Remy Alternator 19020310 replaces 3947577 and cross references competitor 3947578 Model 22SI 12 Volt 150 Amp Mount Type J180 Hinge B+ Output Teminal: 1/4 R Termincal #10 I Terminal #10