{"product_id":"hino-copper-seal-washer-s172201010","title":"Hino Copper Seal Washer S172201010 | Marine Diesel Engine Sealing Washer","description":"\u003ch2\u003eHino Copper Seal Washer S172201010 — Marine Diesel Engine Sealing Washer\u003c\/h2\u003e\u003cp\u003eA precision OEM copper seal washer for Hino marine diesel engines. Copper seal washers are used as crush washers on drain plugs, banjo bolts, and fuel or oil system fittings — they deform slightly under torque to create a leak-free metal-to-metal seal without the need for thread sealant or gasket compound.\u003c\/p\u003e\u003cp\u003eThis is the correct OEM replacement washer for compatible Hino diesel engine applications. Using the correct OEM washer ensures proper crush characteristics and a reliable seal — aftermarket substitutes may not deform correctly and can result in seepage or leaks.\u003c\/p\u003e\u003ch3\u003eKey Features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003ePart number: S172201010\u003c\/li\u003e\n\u003cli\u003eMaterial: Copper — soft enough to crush and seal, durable enough to resist corrosion\u003c\/li\u003e\n\u003cli\u003eOEM Hino specification — correct crush characteristics for a leak-free seal\u003c\/li\u003e\n\u003cli\u003eUsed on drain plugs, banjo bolts, and fuel\/oil system fittings\u003c\/li\u003e\n\u003cli\u003eSingle-use — replace with a new washer every time the fitting is removed\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eBest Use Case\u003c\/h3\u003e\u003cp\u003eReplace this washer any time the associated drain plug, banjo bolt, or fitting is removed — copper seal washers are single-use components and should never be reused after being torqued. Reusing a crushed washer is a common cause of minor oil or fuel seepage on diesel engines. Always torque the fitting to the specification in your engine’s service manual. Confirm the washer outer diameter, inner diameter, and thickness match your application before ordering.\u003c\/p\u003e\u003ch3\u003eParts Desk Insights\u003c\/h3\u003e\u003cp\u003eCopper seal washers are a low-cost, high-importance consumable — customers doing any oil change, fuel filter service, or banjo bolt work on a Hino diesel should always replace the washer. They’re easy to forget and easy to upsell at the point of sale. When a customer orders oil filters or fuel filters, always ask if they need the seal washers too. Cross-sell with the \u003ca href=\"\/products\/hino\"\u003eHino Oil Filter S156071630\u003c\/a\u003e, \u003ca href=\"\/products\/hino-1\"\u003eHino Fuel Filter Element S2340-11133\u003c\/a\u003e, \u003ca href=\"\/products\/hino-oil-filter-element-s1560-71630\"\u003eHino Oil Filter Element Set S1560-71630\u003c\/a\u003e, and the \u003ca href=\"\/products\/hino-8\"\u003eHino Seal Washer S172202015\u003c\/a\u003e (alternate size). For thermostat and gasket service, see the \u003ca href=\"\/products\/hino-4\"\u003eHino Thermostat Gasket S163251280\u003c\/a\u003e and \u003ca href=\"\/products\/hino-12\"\u003eHino Thermostat SZ91046010\u003c\/a\u003e.\u003c\/p\u003e\u003ch3\u003eRelated Hino Engine Service Parts\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/hino-8\"\u003eHino Seal Washer S172202015\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/hino\"\u003eHino Oil Filter S156071630\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/hino-1\"\u003eHino Fuel Filter Element S2340-11133\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/hino-oil-filter-element-s1560-71630\"\u003eHino Oil Filter Element Set S1560-71630\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/hino-4\"\u003eHino Thermostat Gasket S163251280\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/hino-12\"\u003eHino Thermostat SZ91046010\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/hino-11\"\u003eHino O-Ring S291015053\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"HINO","offers":[{"title":"Default Title","offer_id":43563814125604,"sku":"S172201010","price":3.82,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0743\/5799\/7604\/files\/shopping_062ce6ec-98aa-445a-9b6e-6e605fb380e6.webp?v=1784487967","url":"https:\/\/marisolmarine.com\/products\/hino-copper-seal-washer-s172201010","provider":"Marisol Marine Company","version":"1.0","type":"link"}