{"product_id":"threaded-aluminum-oil-cap-kit-for-alko-and-hayes-7k-8k-axles-2-7-8-d201-212-10","title":"Threaded Aluminum Oil Cap Kit for ALKO and Hayes 7K - 8K Axles, 2-7\/8\" (D021-212-10)","description":"\u003cstyle\u003e\n  .rp-mag-lock{\n    --rp-black:#111111;\n    --rp-charcoal:#1d1d1f;\n    --rp-gray:#6b7280;\n    --rp-light:#f5f5f5;\n    --rp-line:#d8d8d8;\n    --rp-maroon:#6e0f11;\n    --rp-gold:#d7a126;\n    --rp-cream:#fff7e3;\n    --rp-shadow:0 16px 36px rgba(0,0,0,.08);\n    --rp-radius:20px;\n    font-family:\"Helvetica Neue\",Helvetica,Arial,sans-serif;\n    color:var(--rp-black);\n    line-height:1.6;\n  }\n\n  .rp-mag-lock *{\n    box-sizing:border-box;\n  }\n\n  .rp-mag-lock .rp-shell{\n    max-width:1080px;\n    margin:0 auto;\n    padding:28px 18px 40px 18px;\n    background:\n      linear-gradient(180deg,#fafafa 0%,#ffffff 22%,#ffffff 100%);\n  }\n\n  .rp-mag-lock .rp-hero{\n    position:relative;\n    overflow:hidden;\n    border:1px solid #ececec;\n    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!important;\n  }\n\n  .rp-rounded-all a,\n  .rp-rounded-all a[style] {\n    border-radius: 999px !important;\n  }\n\n  .rp-rounded-all span[style*=\"background\"],\n  .rp-rounded-all span[style*=\"border\"] {\n    border-radius: 999px !important;\n  }\n\n  .rp-rounded-all table {\n    border-radius: 18px !important;\n    overflow: hidden !important;\n  }\n\n  .rp-rounded-all td,\n  .rp-rounded-all th {\n    border-radius: 0 !important;\n  }\n\n  .rp-rounded-all table tr:first-child td:first-child,\n  .rp-rounded-all table tr:first-child th:first-child {\n    border-top-left-radius: 18px !important;\n  }\n\n  .rp-rounded-all table tr:first-child td:last-child,\n  .rp-rounded-all table tr:first-child th:last-child {\n    border-top-right-radius: 18px !important;\n  }\n\n  .rp-rounded-all table tr:last-child td:first-child,\n  .rp-rounded-all table tr:last-child th:first-child {\n    border-bottom-left-radius: 18px !important;\n  }\n\n  .rp-rounded-all table tr:last-child td:last-child,\n  .rp-rounded-all table tr:last-child th:last-child {\n    border-bottom-right-radius: 18px !important;\n  }\n\u003c\/style\u003e\n\u003cdiv class=\"rp-rounded-all\"\u003e\n\u003cdiv class=\"rp-mag-lock\"\u003e\n\u003cdiv class=\"rp-shell\"\u003e\n\u003cdiv class=\"rp-hero\"\u003e\n\u003cdiv class=\"rp-logo\"\u003e\u003cimg alt=\"R \u0026amp; P Carriages\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2659\/6148\/files\/LOGO-FINALx200.png?v=1763669885\"\u003e\u003c\/div\u003e\n\u003cdiv class=\"rp-kicker\"\u003eHub \u0026amp; Wheel End Maintenance\u003c\/div\u003e\n\u003ch1 class=\"rp-title\"\u003eThreaded Aluminum Oil Cap Kit for ALKO and Hayes 7K - 8K Axles, 2-7\/8\"\u003c\/h1\u003e\n\u003cp class=\"rp-subhead\"\u003eHeavy-duty aluminum alloy protection with visual monitoring and magnetic debris filtration for professional-grade hub performance.\u003c\/p\u003e\n\u003cdiv class=\"rp-partline\"\u003e\n\u003cspan class=\"rp-badge\"\u003ePart Number: D021-212-10\u003c\/span\u003e \u003cspan class=\"rp-badge alt\"\u003eFits 7,000lb - 8,000lb Axles\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"rp-section rp-grid-2\"\u003e\n\u003cdiv class=\"rp-card\"\u003e\n\u003cdiv class=\"rp-rule-title\"\u003e\n\u003ch2\u003eOverview\u003c\/h2\u003e\n\u003c\/div\u003e\n\u003cp class=\"rp-lead\"\u003eUpgrade your trailer's wheel end protection with this \u003cstrong\u003eHeavy Duty Aluminum Alloy Lube Cap\u003c\/strong\u003e. Engineered for versatility, this cap is designed to perform in both grease and oil bath applications. Featuring a clear indicating window for instant lubricant level checks and a magnetic vent plug to trap debris, it is the ultimate professional-grade solution for preventing hub failure and extending bearing life.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"rp-card rp-service\"\u003e\n\u003ch2\u003eR\u0026amp;P Service Insight\u003c\/h2\u003e\n\u003cp\u003eThis component is the ideal upgrade from standard plastic caps, offering significantly higher resistance to environmental stress and load impact.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eWear Resistance:\u003c\/strong\u003e Aluminum construction prevents the cracking and warping common in polycarbonate caps.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChemical Guard:\u003c\/strong\u003e UV-resistant sight glass and alloy body withstand road chemicals and sun exposure.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEasy Access:\u003c\/strong\u003e Integrated fill and drain ports simplify lubricant changes without hub disassembly.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"rp-section\"\u003e\n\u003cdiv class=\"rp-card rp-knowledge\"\u003e\n\u003ch2\u003eR\u0026amp;P Knowledge Hub\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Standard 1\/8\"-27 NPTF plug threading; fits most heavy-duty trailer hubs designed for screw-in oil or grease caps.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eVehicle \/ System Fit:\u003c\/strong\u003e Ideal for Utility, Flatbed, and Equipment trailers using grease or oil bath hub systems.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eInstallation Notes:\u003c\/strong\u003e To safeguard the Valcrum Warranty, ensure that the Valcrum Oil Cap Wrench is used for installation and removal. Do not over-torque.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePerformance Insight:\u003c\/strong\u003e The aluminum alloy body dissipates heat more effectively than plastic, while the integrated magnet pulls metallic wear particles out of suspension to clean the lubricant actively.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"rp-section\"\u003e\n\u003cdiv class=\"rp-card rp-service\"\u003e\n\u003ch2\u003eR\u0026amp;P Repair Insight\u003c\/h2\u003e\n\u003cp\u003eBefore proceeding with your order or installation, please perform these essential checks to ensure a perfect fit and long-term reliability.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Check:\u003c\/strong\u003e Verify your hub thread diameter is 2-7\/8\" to match these specific ALKO\/Hayes style hubs.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTooling:\u003c\/strong\u003e Avoid using standard pipe wrenches, as they can damage the machined finish and void the manufacturer warranty.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eO-Ring Seat:\u003c\/strong\u003e Ensure the hub face is clean and free of debris to allow the new O-ring to create a pressure-tight seal.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"rp-section\"\u003e\n\u003cdiv class=\"rp-rule-title\"\u003e\n\u003ch2\u003eFeatures\u003c\/h2\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"rp-feature-grid\"\u003e\n\u003cdiv class=\"rp-feature\"\u003e\n\u003ch3\u003eDual-Purpose Design\u003c\/h3\u003e\n\u003cp\u003eFully compatible with both Grease and Oil Bath lubrication systems for maximum versatility.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"rp-feature\"\u003e\n\u003ch3\u003eVisual Monitoring\u003c\/h3\u003e\n\u003cp\u003eIntegrated indicating window allows for rapid \"at-a-glance\" lubricant level and clarity checks.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"rp-feature\"\u003e\n\u003ch3\u003eMagnetic Protection\u003c\/h3\u003e\n\u003cp\u003eThe included magnetic vent plug removes harmful metallic micro-particles from your hub's lubricant.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"rp-feature\"\u003e\n\u003ch3\u003eHeavy Duty Build\u003c\/h3\u003e\n\u003cp\u003eMachined aluminum alloy body provides superior impact resistance and durability over OEM plastic units.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"rp-section rp-grid-2\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"rp-rule-title\"\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"rp-table-wrap\"\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eDetail\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePart Number\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eD021-212-10\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eProduct Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eHeavy Duty Hub Lube Cap\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eApplication\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eGrease or Oil Bath Hubs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMaterial \/ Finish\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eAluminum Alloy \/ Machined\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eKey Measurement\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e2-7\/8\" Diameter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePort Thread\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1\/8\"-27 NPTF\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"rp-rule-title\"\u003e\n\u003ch2\u003eFitment \/ Application\u003c\/h2\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"rp-table-wrap\"\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eCategory\u003c\/th\u003e\n\u003cth\u003eDetails\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eVehicle \/ System\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUtility, Equipment, and Heavy Duty Trailers\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePrimary Fit\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eALKO and Hayes Axles\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAxle Capacity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eStandard 7k, 8k, and Heavy Duty Axles\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eNotes\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eRequires Valcrum Wrench for warranty compliance. One kit per wheel.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"rp-section\"\u003e\n\u003cdiv class=\"rp-rule-title\"\u003e\n\u003ch2\u003eIncluded Components\u003c\/h2\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"rp-table-wrap\"\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eQuantity\u003c\/th\u003e\n\u003cth\u003eItem\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1\u003c\/td\u003e\n\u003ctd\u003eAluminum Alloy Lube Cap Body\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1\u003c\/td\u003e\n\u003ctd\u003eMagnetic Vent Plug\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1\u003c\/td\u003e\n\u003ctd\u003eSealing O-Ring\/Gasket Set\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1\u003c\/td\u003e\n\u003ctd\u003e1\/8\"-27 NPTF Plug \u0026amp; Hardware\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"rp-note\"\u003e\n\u003cstrong\u003eVerification:\u003c\/strong\u003e Please verify your hub thread diameter and lubricant type before ordering. Using improper tools may damage the finish and void the manufacturer warranty.\u003c\/div\u003e\n\u003cdiv class=\"rp-cta-wrap\"\u003e\u003ca href=\"\/search?q=Valcrum\" class=\"rp-btn\"\u003eView More Valcrum Hub Options\u003c\/a\u003e\u003c\/div\u003e\n\u003cdiv class=\"rp-seo\"\u003eValcrum VAL-ALCAP-HD, aluminum oil bath cap, trailer grease cap, magnetic hub plug, trailer axle maintenance, 1\/8 NPTF hub cap, oil bath sight glass, heavy duty trailer parts, ALKO 7k oil cap, Hayes 8k oil cap.\u003c\/div\u003e\n\u003cdiv class=\"rp-footer\"\u003e\u003cimg alt=\"R \u0026amp; P Carriages\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2659\/6148\/files\/Baseball_AdvertisingRP-sign_1.jpg?v=1771533480\"\u003e\u003c\/div\u003e\n\u003chr style=\"border: 0; border-top: 1px solid #eee; margin: 24px 0 0 0;\"\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Need a Trailer Part","offers":[{"title":"Default Title","offer_id":50762447847710,"sku":"D021-212-10","price":44.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2659\/6148\/files\/D021-212-10.3.jpg?v=1775510788","url":"https:\/\/needatrailerpart.com\/products\/threaded-aluminum-oil-cap-kit-for-alko-and-hayes-7k-8k-axles-2-7-8-d201-212-10","provider":"Need a Trailer Part","version":"1.0","type":"link"}