150 HP 20 Spline 4 Way G'box Part No. B8671 - 1.188:1   Lower - ratio REDUCTION (fits 1000 RPM PTO). Through Shafts 1:1 Ratio Part No. B8674 - 1:1.46   Lower - ratio INCREASE (fits 540 RPM PTO). Through Shafts 1:1.467 Ratio Part No. B8676 - 1:1.93   Lower - ratio INCREASE (fits 540 RPM PTO). Through Shafts 1:1.93 Ratio SPECIFICATIONS A = 280mm (11") B = 225mm (8.85") C = 225mm (8.85") SPARE PARTS PART No. DESCRIPTION B9470 Oil Seal - Iinput B6673 Oil Seal - Through Shaft B4347 Through Shaft B8677 Input Gear 29 Teeth for B8676 G'Box B8678 Output Gear 15 Teeth for B8676 G'Box B4348 Input Shaft 20 Spline B4356 Outer Bearing - Input Shaft + Cross Shaft B4357 Rear Bearing - Input Shaft B4358 Bearing - Output Shaft, 2 Required B3258 Slotted Nut 1 3/8" x 18 UNF B3262 Lower Output Shaft B4359 Side Plate Gasket B4360 Input Gasket B9070 Lower Output Seal HOUSING: SHAFTS: GEARS: SEALS: BEARINGS: OIL: WEIGHT: SHAFTS: 60-45-10 Nodular UNS G51200 UNS G51200 Triple Lipped Spring Loaded Tapered Roller EP-140 1 3/4" x 20 spline Standard Rotation