{"product_id":"k-n-77-83-porsche-911-csi-f-i-drop-in-air-filter","title":"K\u0026N 33-2004 Drop-In Air Filter for Porsche 911 (1974-1983)","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\u003ch2\u003eUpgrade Your Porsche 911's Air Intake with a K\u0026amp;N 33-2004 High-Flow Air Filter\u003c\/h2\u003e\n\u003cp\u003eExperience a noticeable increase in horsepower and acceleration with the K\u0026amp;N 33-2004 Drop-In Air Filter, specifically designed for your Porsche 911. This premium air filter utilizes K\u0026amp;N's renowned High-Flow Filtration Technology™, featuring a state-of-the-art design with layered, oiled cotton media. This advanced construction is engineered to maximize airflow while effectively capturing contaminants, ensuring your engine receives clean, cool air for optimal performance.\u003c\/p\u003e\n\u003ch3\u003eKey Features and Benefits:\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEnhanced Performance:\u003c\/strong\u003e Designed to increase horsepower and improve acceleration by allowing more air into the engine.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSuperior Filtration:\u003c\/strong\u003e Captures up to 99% of harmful contaminants, protecting your engine from wear and tear.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWashable and Reusable:\u003c\/strong\u003e This filter is washable and reusable, saving you money and reducing waste over its lifespan. With proper cleaning, it can last for the life of your vehicle.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDirect Fit Replacement:\u003c\/strong\u003e Engineered to install easily into your factory air box, making it a simple and effective upgrade. No modifications are required.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDurable Construction:\u003c\/strong\u003e Built with a robust design to withstand the demands of daily driving and performance use.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eK\u0026amp;N 10-Year\/Million Mile Limited Warranty:\u003c\/strong\u003e Backed by K\u0026amp;N's industry-leading warranty for peace of mind.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThis K\u0026amp;N 33-2004 air filter is a direct replacement for your stock filter and is compatible with various Porsche 911 models from 1974 to 1983, including Base, S, SC, and Turbo Carrera submodels. Ensure your classic Porsche breathes easy and performs at its best. Choose K\u0026amp;N for proven performance and reliability.\u003c\/p\u003e\n\u003cp\u003eInvest in superior airflow and lasting performance for your Porsche 911. Get your K\u0026amp;N 33-2004 Drop-In Air Filter today!\u003c\/p\u003e\n\u003cdiv style=\"margin:24px 0;\"\u003e\n\u003ch3 style=\"margin:0 0 8px;\"\u003eVehicle Fitment\u003c\/h3\u003e\n\u003ctable style=\"border-collapse:collapse;width:100%;font-size:0.92em;\"\u003e\n\u003cthead\u003e\u003ctr style=\"background:#f0f0f0;text-align:left;\"\u003e\n\u003cth style=\"padding:6px 10px;\"\u003eYears\u003c\/th\u003e\n\u003cth style=\"padding:6px 10px;\"\u003eMake\u003c\/th\u003e\n\u003cth style=\"padding:6px 10px;\"\u003eModel\u003c\/th\u003e\n\u003cth style=\"padding:6px 10px;\"\u003eTrim\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:4px 10px;border-bottom:1px solid #eee;\"\u003e1974\u003c\/td\u003e\n\u003ctd style=\"padding:4px 10px;border-bottom:1px solid #eee;\"\u003ePorsche\u003c\/td\u003e\n\u003ctd style=\"padding:4px 10px;border-bottom:1px solid #eee;\"\u003e911\u003c\/td\u003e\n\u003ctd style=\"padding:4px 10px;border-bottom:1px solid #eee;\"\u003eBase\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:4px 10px;border-bottom:1px solid #eee;\"\u003e1974-1977\u003c\/td\u003e\n\u003ctd style=\"padding:4px 10px;border-bottom:1px solid #eee;\"\u003ePorsche\u003c\/td\u003e\n\u003ctd style=\"padding:4px 10px;border-bottom:1px solid #eee;\"\u003e911\u003c\/td\u003e\n\u003ctd style=\"padding:4px 10px;border-bottom:1px solid #eee;\"\u003eS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:4px 10px;border-bottom:1px solid #eee;\"\u003e1976-1977\u003c\/td\u003e\n\u003ctd style=\"padding:4px 10px;border-bottom:1px solid #eee;\"\u003ePorsche\u003c\/td\u003e\n\u003ctd style=\"padding:4px 10px;border-bottom:1px solid #eee;\"\u003e911\u003c\/td\u003e\n\u003ctd style=\"padding:4px 10px;border-bottom:1px solid #eee;\"\u003eTurbo Carrera\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:4px 10px;border-bottom:1px solid #eee;\"\u003e1978-1983\u003c\/td\u003e\n\u003ctd style=\"padding:4px 10px;border-bottom:1px solid #eee;\"\u003ePorsche\u003c\/td\u003e\n\u003ctd style=\"padding:4px 10px;border-bottom:1px solid #eee;\"\u003e911\u003c\/td\u003e\n\u003ctd style=\"padding:4px 10px;border-bottom:1px solid #eee;\"\u003eSC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\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 33-2004 Drop-In Air Filter for Porsche 911 (1974-1983)\",\"description\":\"Boost your Porsche 911's performance with the K\u0026N 33-2004 Drop-In Air Filter. Engineered for superior airflow and filtration. Shop now at GGCRACING!\",\"brand\":{\"@type\":\"Brand\",\"name\":\"K\u0026N Engineering\"},\"mpn\":\"33-2004\",\"url\":\"https:\/\/ggcracing.com\/products\/k-n-77-83-porsche-911-csi-f-i-drop-in-air-filter\",\"offers\":{\"@type\":\"Offer\",\"price\":\"149.99\",\"priceCurrency\":\"USD\",\"availability\":\"https:\/\/schema.org\/InStock\",\"url\":\"https:\/\/ggcracing.com\/products\/k-n-77-83-porsche-911-csi-f-i-drop-in-air-filter\",\"sku\":\"KNN33-2004\"}}\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\",\"@type\":\"BreadcrumbList\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/ggcracing.com\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Intake\",\"item\":\"https:\/\/ggcracing.com\/collections\/intake\"},{\"@type\":\"ListItem\",\"position\":3,\"name\":\"K\u0026N Engineering\",\"item\":\"https:\/\/ggcracing.com\/collections\/vendors?q=K\u0026N+Engineering\"},{\"@type\":\"ListItem\",\"position\":4,\"name\":\"K\u0026N 33-2004 Drop-In Air Filter for Porsche 911 (1974-1983)\",\"item\":\"https:\/\/ggcracing.com\/products\/k-n-77-83-porsche-911-csi-f-i-drop-in-air-filter\"}]}\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\",\"@type\":\"FAQPage\",\"mainEntity\":[{\"@type\":\"Question\",\"name\":\"Does the K\u0026N 33-2004 Drop-In Air Filter for Porsche 911 (1974-1983) fit my vehicle?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Compatibility depends on your exact year, make, and model. Use the fitment table above to confirm.\"}},{\"@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 33-2004 Drop-In Air Filter for Porsche 911 (1974-1983)?\",\"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":41454569979988,"sku":"KNN33-2004","price":149.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0552\/3210\/2484\/files\/4f11ea6ae417aea10f172a36b5b4475b.jpg?v=1721665429","url":"https:\/\/ggcracing.com\/en-co\/products\/k-n-77-83-porsche-911-csi-f-i-drop-in-air-filter","provider":"GGCRACING INC","version":"1.0","type":"link"}