{"id":17137,"date":"2026-10-14T17:14:38","date_gmt":"2026-10-14T17:14:38","guid":{"rendered":"https:\/\/alteregocycle.com\/?product=harddrive-polished-oil-pump-big-twin-1973-1991-301495"},"modified":"2026-10-29T16:29:59","modified_gmt":"2026-10-29T16:29:59","slug":"harddrive-polished-oil-pump-big-twin-1973-1991-301495","status":"publish","type":"product","link":"https:\/\/alteregocycle.com\/?product=harddrive-polished-oil-pump-big-twin-1973-1991-301495","title":{"rendered":"HARDDRIVE Polished Oil Pump Big Twin 1973\u20131991 \u2014 301495"},"content":{"rendered":"<p>HARDDRIVE Polished Oil Pump Big Twin 1973\u20131991 \u2014 301495<\/p>\n<h3>Application<\/h3>\n<p>Supplier-listed application: Polished Oil Pump Big Twin 1973\u20131991. Model codes and year restrictions shown here must match your motorcycle.<\/p>\n<h3>Features<\/h3>\n<ul>\n<li>HardDrive Oil Pumps are made from Cast Aluminum that is CNC machined then polished to a high shine finish.<\/li>\n<li>Surplus oil is routed back to the main supply passage rather than the return to avoid unnecessary filtering and offer the opportunity to upgrade earlier engines to the 1981 and later oiling system.<\/li>\n<li>This oiling system splits bottom and top end oil supply which increases oil pressure to the hydraulic lifters and and top end.<\/li>\n<li>Come&#x27;s with gaskets, drive shaft with with keys and snap ring, mounting hardware, check ball and pressure relief valve assemblies.<\/li>\n<\/ul>\n<h3>Product details<\/h3>\n<ul>\n<li>Brand: HARDDRIVE<\/li>\n<li>Manufacturer part number: 301495<\/li>\n<li>WPS part number: 820-50102<\/li>\n<li>Sold as: each<\/li>\n<\/ul>\n<h3>Warehouse availability<\/h3>\n<p>In stock at the warehouse \u2014 delivered to Alter Ego before customer shipping or Kansas City pickup. Wait for your pickup-ready notice.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Pol Oil Pump Big Twin 1973\u20131991. Sold as each. In stock.<\/p>\n","protected":false},"featured_media":17136,"comment_status":"open","ping_status":"closed","template":"","meta":[],"product_brand":[163],"product_cat":[26],"product_tag":[],"class_list":["post-17137","product","type-product","status-publish","has-post-thumbnail","product_brand-harddrive","product_cat-engine-parts","first","instock","taxable","shipping-taxable","purchasable","product-type-simple"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.6 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>HARDDRIVE Polished Oil Pump Big Twin 1973\u20131991 \u2014 301495 - Alter Ego Motorcycle Supply<\/title>\n<meta name=\"description\" content=\"Pol Oil Pump Big Twin 1973\u20131991. Sold as each. In stock at the warehouse \u2014 delivered to Alter Ego first.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/alteregocycle.com\/?product=harddrive-polished-oil-pump-big-twin-1973-1991-301495\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"HARDDRIVE Polished Oil Pump Big Twin 1973\u20131991 \u2014 301495 - Alter Ego Motorcycle Supply\" \/>\n<meta property=\"og:description\" content=\"Pol Oil Pump Big Twin 1973\u20131991. Sold as each. 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