15pc 20mm Differential Crush Washer 94109-20000 Replacement for Honda/Acura

Direct replacement for Honda/Acura OEM 94109-20000 (9410920000) and 90413-551-000 (90413551000). Cross-references with aftermarket numbers 095-023 (095023) and 097-831CD (097831CD). Dimensions: 20mm / 0.79in ID, 27.7mm / 1.09in OD, 2mm / 0.08in thickness. 15-pack value — enough for years of rear differential and engine oil drain plug maintenance.

Used on rear differential drain and fill plugs on AWD Honda and Acura models (CR-V, Pilot, Passport, Ridgeline, MDX, RDX, TLX), and on engine oil drain plugs on select Honda/Acura models that use a 20mm washer. Each rear differential service requires 2 washers (drain + fill). Important: this is the 20mm ID washer (94109-20000) — not the 18mm ID transmission washer (90471-PX4-000). Always verify your OEM washer num…

Manufactured from high-purity aluminum for excellent flexibility, corrosion resistance, and sealing performance. Aluminum crush washers deform under torque to fill microscopic surface imperfections between the drain plug and case housing, creating a tight, leak-free barrier. Resistant to degradation from engine oil, differential fluid, and Honda Dual Pump Fluid II.

Crush washers are single-use components — Honda recommends replacing the gasket at every fluid change. Reusing an old crush washer is one of the most common causes of differential fluid and oil leaks after service. A rear differential that slowly loses fluid due to a bad washer can result in gear damage costing thousands. Fresh washers at every service keep your drivetrain sealed.

Compatible with Honda Accord (1990-2024), Civic (1990-2024), CR-V (1997-2024), Element (2003-2011), Fit (2007-2020), HR-V, Odyssey (1995-2024), Passport, Pilot (2003-2024), Ridgeline (2006-2024), S2000, Prelude, Insight; Acura CL, ILX, Integra, MDX, RDX, RSX, TL, TLX, TSX. Model years 1970-2024. Please verify your OEM washer number before ordering.