{"product_id":"21-40-screw-in-oil-cap","title":"21-40 – Screw-In Oil Cap","description":"\u003cp\u003eThe \u003cstrong\u003e21-40 Screw-In Oil Cap\u003c\/strong\u003e is a high-quality, threaded cap designed specifically for Dexter 6,000 lb and 7,000 lb 5-spoke axles equipped with oil bath hubs.Crafted from durable clear Lexan plastic, this cap allows for easy visual inspection of oil levels without the need for removal, ensuring optimal maintenance and performance of your trailer’s axle system.\u003c\/p\u003e \u003ch3\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/h3\u003e \u003cul\u003e \u003cli\u003e \u003cp\u003e\u003cstrong\u003eClear Lexan Construction:\u003c\/strong\u003eProvides visibility to monitor oil levels effortlessly.\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003e\u003cstrong\u003eScrew-In Design:\u003c\/strong\u003eEnsures a secure fit, preventing leaks and contamination.\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003eFits Dexter 6K–7K 5-spoke axles with oil bath hubs.\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003e\u003cstrong\u003eOEM Replacement:\u003c\/strong\u003eReplaces Dexter part number 21-40.\u003c\/p\u003e \u003c\/li\u003e \u003c\/ul\u003e \u003ch3\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/h3\u003e \u003cul\u003e \u003cli\u003e \u003cp\u003e\u003cstrong\u003eProduct Number:\u003c\/strong\u003e21-40\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003e\u003cstrong\u003eOuter Diameter:\u003c\/strong\u003e2.563 inches\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003e\u003cstrong\u003eThread Size:\u003c\/strong\u003e2 5\/8″-12\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003e\u003cstrong\u003eMaterial:\u003c\/strong\u003eClear Lexan plastic\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e \u003cp\u003e\u003cstrong\u003eIncludes:\u003c\/strong\u003eOil cap only (O-ring and rubber plug sold separately)\u003c\/p\u003e \u003c\/li\u003e \u003c\/ul\u003e","brand":"Trailer Parts Mart","offers":[{"title":"Default Title","offer_id":52963057107160,"sku":"21-40","price":25.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0823\/0898\/9144\/files\/01_21-40-Trailer-Axle-Replacement-Oil-Cap_MED_5eaee52e7b3d.webp?v=1794459387","url":"https:\/\/trailerproparts.com\/products\/21-40-screw-in-oil-cap","provider":"Trailer Parts Mart","version":"1.0","type":"link"}