Combo pack includes 6pcs of the 20mm engine oil drain plug washer (OEM 94109-20000) and 6pcs of the 18mm transmission/differential drain plug washer (OEM 90471-PX4-000). Everything you need for a complete Honda/Acura fluid service in one package — engine oil, transmission fluid, and differential fluid changes all covered.
20mm washer (94109-20000) dimensions: 20.2mm / 0.80in ID, 27mm / 1.06in OD, 2mm / 0.08in thickness. Fits engine oil drain plugs on select Honda and Acura models that use the larger 20mm crush washer. 18mm washer (90471-PX4-000) dimensions: 18.2mm / 0.72in ID, 25.8mm / 1.02in OD, 1.9mm / 0.07in thickness. Fits transmission and rear differential drain plugs. Always verify your washer size before ordering.
Manufactured from high-purity aluminum for excellent flexibility, corrosion resistance, and sealing performance. Aluminum crush washers deform under torque to fill microscopic surface imperfections, creating a tight, leak-free barrier. Resistant to degradation from engine oil, ATF DW-1, CVT fluid HCF-2, manual transmission fluid, and Honda Dual Pump Fluid II.
SECURE FIT: our oil drain plug washer fits snug and flush providing a much more tight and secure fit than plastic or cooper seals and boast a much longer lasting sealing capabilities.
Compatible with Honda Accord, Civic, CR-V, Element, Fit, HR-V, Odyssey, Passport, Pilot, Ridgeline, S2000, Prelude, Insight, Crosstour, CR-Z; Acura CL, ILX, Integra, MDX, RDX, RSX, TL, TLX, TSX. The 18mm washer also fits rear differential drain and fill plugs on AWD models including CR-V, Pilot, Passport, Ridgeline, MDX, RDX, TLX. Model years 1990-2024. Please verify your OEM washer numbers before ordering.