41136-ZY1-010 Washer B - Overview. The 41136-ZY1-010 Washer B is a genuine OEM thrust bearing washer designed to support the water pump and vertical shaft system in Honda marine engines. It plays a critical role in maintaining stable mechanical motion within the marine engine's water pump assembly, ensuring smooth operation and longevity. Engineered with precision to meet Honda's factory specifications, the Washer B matches exact dimensions and tolerances to integrate flawlessly with existing se