Terminal W, Voltage 14, Amp 145, Regulator type IR, Belt Adjustment Bracket Hole 1 1/2" UNC, Mounting Bracket Distance 101.20, Radius 98.00, Prod. info BN, Bracket Hole Size Rear 13.20, Pulley w/o, W plug type 10-24 UNC, Servicing Volvo, International, Kenworth, Mack, D+ Position 57, Radius 2 98.00, B+ M6, Rotation CW/CCW, Bracket Hole Size 1 13.00, Holder Arm Width 14.30, D+ Size 10-24 UNC, Belt Adjustment Bracket Hole Position 60, Total Length 223.00, Position 5, B+ Position 52, Remarks Replacing: 21SI. Negative grounding. One-wire system. B+: 1/4".