New 12V, 90-AMP Alternator Fits Lehman, Perkins & others Rplc. Perkins # 2871A141, 2871A147, 2871A148, 2871A153, 2871A154, 2871A163 , 2871A165. 2871A63, 2871C104 Rplc. Valeo # 510859 Rplc. Motorola # 510-811, 510-812, 510-859, 9AR2732P, 9AR2733P, 9AR2958P Single Groove Pully and Insulated Return