Voltage 14, Amp 115, Pulley w/o, Bracket Hole Size 1 13.00, Prod. info BN, Bracket Hole Size Rear 12.50, D+ Size Plug, D+ Position 60, Holder Arm Width 14.50, Servicing Volvo, Ford, Freightliner, Kenworth, Mack, John Deere, Caterpillar, New Holland, B+ 1/4" UNF, Radius 2 99.00, Plug no. 1 PL43, Mounting Bracket Distance 101.00, Radius 99.00, Belt Adjustment Bracket Hole 1 1/2" UNC, Regulator type IR, Remarks Replacing: 21SI. Negative grounding. B+: 1/4"., Position 8, B+ Position 53, Belt Adjustment Bracket Hole Position 60, Total Length 217.50