PG Series Hydro Gear OEM Seal Kit, Valve Plate, Piston Block 70525,51444,70331. Hydro Gear: 70525, BDP-10A. The item “PG Series Hydro Gear OEM Seal Kit, Valve Plate, Piston Block 70525,51444,70331″ is in sale since Friday, January 10, 2020. This item is in the category “Home & Garden\Yard, Garden & Outdoor Living\Lawn Mowers, Parts & Accessories\Lawn Mower Parts”. The seller is “taylor_repair_ope” and is located in Sneads Ferry, North Carolina. This item can be shipped worldwide.