90534-921-000 Washer D (2.15MM) - Overview. The 90534-921-000 Washer D (2.15MM) is an essential component within Honda marine engine systems, designed to ensure reliable mechanical assembly and performance. This washer supports gear and shaft assemblies, providing consistent dimensional accuracy and maintaining proper spacing, which is crucial for smooth operations and durability. Engineered to meet exact factory specifications, this washer ensures seamless integration with existing parts, maintaining optimal performance and durability.. Key Features. Precisely sized washer designated as type D with 2.15mm thickness.. OEM genuine Honda component ensuring quality and reliable fit.. Functions as a gear washer contributing to stable mechanical motion.. Manufactured to match factory dimensions and tolerances for perfect fit.. Provides clean integration with adjacent hardware and seals.. Maintains expected durability and performance of Honda marine engines.. Why Choose Genuine OEM. Using or