{"product_id":"yamaha-oil-tank-cap-assembly-6h4-21770-00-00","title":"Yamaha Oil Tank Cap Assembly - 6H4-21770-00-00","description":"\u003ch2 data-section-id=\"1c1snel\" data-start=\"0\" data-end=\"82\"\u003eYamaha - Oil Tank Cap Assembly - Lubrication System Component - 6H4-21770-00-00\u003c\/h2\u003e\n\u003chr data-start=\"84\" data-end=\"87\"\u003e\n\u003ch2 data-section-id=\"rzkdgm\" data-start=\"89\" data-end=\"100\"\u003eOverview\u003c\/h2\u003e\n\u003cp data-start=\"101\" data-end=\"488\"\u003eIt’s easy to overlook something like an oil tank cap until it starts causing problems. I’ve seen loose or worn caps let air or moisture into the system, and that’s not something you want anywhere near your oil supply. This piece helps keep everything sealed and working the way it should. When it’s doing its job, you don’t think about it—but when it’s not, it can lead to bigger issues.\u003c\/p\u003e\n\u003chr data-start=\"490\" data-end=\"493\"\u003e\n\u003ch2 data-section-id=\"1ma7m6t\" data-start=\"495\" data-end=\"510\"\u003eKey Features\u003c\/h2\u003e\n\u003cul data-start=\"511\" data-end=\"971\"\u003e\n\u003cli data-section-id=\"ixiico\" data-start=\"511\" data-end=\"607\"\u003eSecure Tank Seal – Helps maintain a tight seal to protect the oil supply from contamination.\u003c\/li\u003e\n\u003cli data-section-id=\"eh3nai\" data-start=\"608\" data-end=\"696\"\u003eProper Venting Function – Supports correct airflow to allow consistent oil delivery.\u003c\/li\u003e\n\u003cli data-section-id=\"a5xxkf\" data-start=\"697\" data-end=\"782\"\u003eOEM Fitment Design – Built to Yamaha specifications for reliable fit and sealing.\u003c\/li\u003e\n\u003cli data-section-id=\"18j2whr\" data-start=\"783\" data-end=\"870\"\u003eDurable Cap Construction – Designed to handle heat, vibration, and marine exposure.\u003c\/li\u003e\n\u003cli data-section-id=\"1syi0hm\" data-start=\"871\" data-end=\"971\"\u003eSupports System Integrity – Helps ensure the oil injection system operates without interruption.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"973\" data-end=\"976\"\u003e\n\u003ch2 data-section-id=\"1qx5o2j\" data-start=\"978\" data-end=\"1008\"\u003eEngine \u0026amp; Boat Compatibility\u003c\/h2\u003e\n\u003cp data-start=\"1009\" data-end=\"1277\"\u003eDesigned for Yamaha outboards equipped with compatible oil injection systems. Commonly used across small to mid-size two-stroke engines found on fishing boats, skiffs, and recreational vessels. Always verify compatibility with your specific engine before installation.\u003c\/p\u003e\n\u003chr data-start=\"1279\" data-end=\"1282\"\u003e\n\u003ch2 data-section-id=\"1hryhf7\" data-start=\"1284\" data-end=\"1290\"\u003eFAQ\u003c\/h2\u003e\n\u003cp data-start=\"1292\" data-end=\"1427\"\u003e\u003cstrong data-start=\"1292\" data-end=\"1347\"\u003eQ: What are signs the oil tank cap needs replacing?\u003c\/strong\u003e\u003cbr data-start=\"1347\" data-end=\"1350\"\u003eA: Loose fit, visible cracks, or oil residue around the cap are common signs.\u003c\/p\u003e\n\u003cp data-start=\"1429\" data-end=\"1563\"\u003e\u003cstrong data-start=\"1429\" data-end=\"1476\"\u003eQ: Can a bad cap affect engine performance?\u003c\/strong\u003e\u003cbr data-start=\"1476\" data-end=\"1479\"\u003eA: Yes, if air or contaminants enter the system, it can disrupt proper oil delivery.\u003c\/p\u003e\n\u003cp data-start=\"1565\" data-end=\"1709\"\u003e\u003cstrong data-start=\"1565\" data-end=\"1621\"\u003eQ: Does this cap need to be tightened a certain way?\u003c\/strong\u003e\u003cbr data-start=\"1621\" data-end=\"1624\"\u003eA: Just snug and secure—over-tightening isn’t necessary and can cause wear over time.\u003c\/p\u003e\n\u003cp data-start=\"1711\" data-end=\"1851\"\u003e\u003cstrong data-start=\"1711\" data-end=\"1756\"\u003eQ: Can saltwater exposure damage the cap?\u003c\/strong\u003e\u003cbr data-start=\"1756\" data-end=\"1759\"\u003eA: Over time, yes—constant exposure can lead to wear or degradation of the sealing surfaces.\u003c\/p\u003e\n\u003cp data-start=\"1853\" data-end=\"2002\"\u003e\u003cstrong data-start=\"1853\" data-end=\"1909\"\u003eQ: Should I replace this during routine maintenance?\u003c\/strong\u003e\u003cbr data-start=\"1909\" data-end=\"1912\"\u003eA: It’s a good idea to inspect it regularly and replace it if there are any signs of wear.\u003c\/p\u003e","brand":"Yamaha","offers":[{"title":"Default Title","offer_id":46937073778979,"sku":"6H4-21770-00-00","price":27.52,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0783\/7410\/9475\/files\/PV254272.jpg?v=1698800139","url":"https:\/\/partsvu.com\/en-ca\/products\/yamaha-oil-tank-cap-assembly-6h4-21770-00-00","provider":"PartsVu","version":"1.0","type":"link"}