{"product_id":"k-n-replacement-element-for-rk-3929-custom-air-filter","title":"K\u0026N E-3040 Replacement Air Filter Element — For RK-3929 Custom Air Filter Assembly","description":"\u003cdiv style=\"background:#f7f7f7;border-left:4px solid #c00000;padding:14px 18px;margin:0 0 18px;\"\u003e\n\u003ch3 style=\"margin:0 0 6px;font-size:1.1em;\"\u003eAbout K\u0026amp;N Engineering\u003c\/h3\u003e\n\u003cp style=\"margin:0;font-size:0.95em;line-height:1.55;\"\u003eK\u0026amp;N has been the world's leader in washable, reusable performance air filters since 1969. From the legendary cone filter to complete cold-air intake systems, K\u0026amp;N's cotton-gauze element delivers more airflow than paper while staying serviceable for the life of the vehicle.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch3 style=\"margin:24px 0 8px;\"\u003eWatch in action\u003c\/h3\u003e\u003cdiv style=\"position:relative;padding-bottom:56.25%;height:0;overflow:hidden;margin:0 0 18px;border-radius:6px;\"\u003e\u003ciframe src=\"https:\/\/www.youtube.com\/embed\/uD6XoY8abnI\" style=\"position:absolute;top:0;left:0;width:100%;height:100%;border:0;\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen loading=\"lazy\"\u003e\u003c\/iframe\u003e\u003c\/div\u003e\n\u003ch2\u003eK\u0026amp;N E-3040 Replacement Air Filter Element for RK-3929\u003c\/h2\u003e\u003cp\u003eMaintain the superior performance of your K\u0026amp;N RK-3929 Custom Air Filter Assembly with the K\u0026amp;N E-3040 Replacement Air Filter Element. This high-flow air filter is meticulously engineered to increase horsepower and acceleration, providing your engine with a cleaner, more efficient air intake. Designed as a direct replacement, it ensures your custom air cleaner continues to deliver optimal filtration and performance.\u003c\/p\u003e\u003ch3\u003eUnmatched Filtration and Reusability\u003c\/h3\u003e\u003cp\u003eK\u0026amp;N's commitment to quality is evident in the E-3040. Unlike disposable paper filters, this element is washable and reusable, offering significant long-term savings and reducing waste. Its advanced design captures harmful contaminants while allowing maximum airflow, protecting your engine and boosting its power output. Backed by K\u0026amp;N's famous Million-Mile Limited Warranty, you can trust in its durability and performance for years to come.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eDirect replacement for K\u0026amp;N RK-3929 Custom Air Filter Assemblies.\u003c\/li\u003e\n\u003cli\u003eDesigned to increase horsepower and acceleration.\u003c\/li\u003e\n\u003cli\u003eProvides excellent engine filtration.\u003c\/li\u003e\n\u003cli\u003eWashable and reusable for long-term value.\u003c\/li\u003e\n\u003cli\u003eBacked by K\u0026amp;N's Million-Mile Limited Warranty.\u003c\/li\u003e\n\u003cli\u003eIdeal for Harley-Davidson motorcycles equipped with RK Series air cleaners.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eKeep your engine breathing freely and powerfully with the K\u0026amp;N E-3040 replacement air filter element, available now at GGCRACING.\u003c\/p\u003e\n\u003cdiv style=\"margin:24px 0;border-top:1px solid #eee;padding-top:18px;\"\u003e\n\u003ch3 style=\"margin:0 0 6px;\"\u003eOften bought with\u003c\/h3\u003e\n\u003cp style=\"font-size:0.9em;color:#555;margin:0 0 8px;\"\u003eOther popular K\u0026amp;N Engineering products customers consider together:\u003c\/p\u003e\n\u003cul style=\"padding-left:20px;margin:0;\"\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/k-n-custom-racing-assembly-carbon-fiber-air-box-w-o-base-large\" style=\"color:#0066cc;text-decoration:none;\"\u003eK\u0026amp;N Custom Racing Assembly Carbon Fiber Air Box - Large\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/k-n-custom-racing-assembly-carbon-fiber-air-box-large-solid-base-only\" style=\"color:#0066cc;text-decoration:none;\"\u003eK\u0026amp;N Custom Racing Assembly Carbon Fiber Air Box - Large Solid Base\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/k-n-custom-racing-assembly-carbon-fiber-4in-air-box-w-o-base-large\" style=\"color:#0066cc;text-decoration:none;\"\u003eK\u0026amp;N 100-8591 Custom Racing Carbon Fiber Air Box - Large\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/k-n-custom-racing-air-filter-rectangular-carbon-fiber-4in-air-box-w-2-75in-air-horn\" style=\"color:#0066cc;text-decoration:none;\"\u003eK\u0026amp;N 100-8593 Custom Racing Air Filter - Carbon Fiber 4in Air Box w\/ 2.75in Air Horn\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/k-n-ford-gm-dodge-throttle-control-module\" style=\"color:#0066cc;text-decoration:none;\"\u003eK\u0026amp;N 20-1000 Throttle Control Module — Fits Ford, GM, Dodge\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\/\",\"@type\":\"Product\",\"name\":\"K\u0026N E-3040 Replacement Air Filter Element \\u2014 For RK-3929 Custom Air Filter Assembly\",\"description\":\"Restore peak performance with the K\u0026N E-3040 replacement air filter element for RK-3929 custom air filter assemblies. Washable, reusable, and backed by a Million-Mile Warranty. 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Contact our experts at GGCRACING with your VIN and we'll verify before you order.\"}},{\"@type\":\"Question\",\"name\":\"How long is shipping for K\u0026N Engineering?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Most in-stock items ship same or next business day. Free shipping on orders over $99 in the continental US. Tracking is provided via email as soon as your order leaves our warehouse.\"}},{\"@type\":\"Question\",\"name\":\"How do I install the K\u0026N E-3040 Replacement Air Filter Element \\u2014 For RK-3929 Custom Air Filter Assemb?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Cold air intakes typically install in 30-60 minutes with basic hand tools. No tuning required for most plug-and-play kits.\"}}]}\u003c\/script\u003e","brand":"K\u0026N Engineering","offers":[{"title":"Default Title","offer_id":41456408887380,"sku":"KNNE-3040","price":99.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0552\/3210\/2484\/files\/68e6d934fdee4ffc0cb17e199527e57e.jpg?v=1721692451","url":"https:\/\/ggcracing.com\/en-co\/products\/k-n-replacement-element-for-rk-3929-custom-air-filter","provider":"GGCRACING INC","version":"1.0","type":"link"}