{"product_id":"performance-air-filter-for-bmw-1-series-3-series-x1-1","title":"Performance Air Filter for BMW 1 Series \/ 3 Series \/ X1","description":"\u003ch2\u003ePrecision Induction for the BMW N4x-Series: BMC High-Flow Filtration\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eWho It’s For:\u003c\/strong\u003e Engineered for BMW 1 Series, 3 Series, and X1 owners running the N43, N45, and N46 in-line four-cylinder powerplants. If you find your E90 or E87 feels a bit breathless during mid-range acceleration, this is the first step in correcting that factory bottleneck.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eThe Symptom:\u003c\/strong\u003e The factory intake system on these BMW four-bangers is designed with a heavy bias toward sound suppression. The stock paper filter is dense, creating a significant pressure drop as air struggles to pass through the tightly packed fibers. This restriction forces the engine to work harder just to breathe, resulting in a delayed throttle response and a feeling of \"heaviness\" when you’re trying to merge into traffic or pull out of a tight corner.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eThe Engineering Fix:\u003c\/strong\u003e BMC’s solution replaces the disposable paper element with a multi-layered cotton gauze system. By using a \"Full Moulding\" process, the filter is constructed from a single soft rubber mould without any welded joints, ensuring a perfect seal within the BMW airbox. The physics are simple: the cotton gauze, treated with low-viscosity oil, allows for a much higher velocity of air to enter the intake tract. This increases the volumetric efficiency of the engine by filtering out particles as small as 7 microns without the massive air-flow resistance of paper.\u003c\/p\u003e\n\n\u003chr\u003e\n\n\u003ch3\u003eWhy Mechanics Choose This Kit\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOptimized Flow Dynamics:\u003c\/strong\u003e Reduces the vacuum effect in the airbox, allowing the N46 and N43 engines to reach their peak torque figures more efficiently.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSuperior Filtration:\u003c\/strong\u003e While OEM filters stop at 10 microns, BMC’s epoxy-coated alloy mesh and cotton setup captures impurities down to 7 microns, protecting the sensitive Mass Air Flow (MAF) sensor.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSustainable Performance:\u003c\/strong\u003e Unlike paper filters that end up in a landfill every 15,000 miles, this unit is fully washable and regenerable, maintaining its structural integrity and flow rates for the life of the vehicle.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable width=\"100%\" style=\"border-collapse: collapse; border: 1px solid #e0e0e0; margin-bottom: 20px;\"\u003e\n  \u003ctr style=\"background-color: #f9f9f9;\"\u003e\n    \u003ctd style=\"padding: 10px; border: 1px solid #e0e0e0; font-weight: bold;\"\u003eFitment\u003c\/td\u003e\n    \u003ctd style=\"padding: 10px; border: 1px solid #e0e0e0;\"\u003e2004-2012 BMW 1 Series \/ 3 Series \/ X1\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr\u003e\n    \u003ctd style=\"padding: 10px; border: 1px solid #e0e0e0; font-weight: bold;\"\u003eEngine Platform\u003c\/td\u003e\n    \u003ctd style=\"padding: 10px; border: 1px solid #e0e0e0;\"\u003eN43 \/ N45 \/ N46 (In-line 4)\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr style=\"background-color: #f9f9f9;\"\u003e\n    \u003ctd style=\"padding: 10px; border: 1px solid #e0e0e0; font-weight: bold;\"\u003eDimensions (mm)\u003c\/td\u003e\n    \u003ctd style=\"padding: 10px; border: 1px solid #e0e0e0;\"\u003eØ1: 78 | Ø2: 128 | L: 133\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr\u003e\n    \u003ctd style=\"padding: 10px; border: 1px solid #e0e0e0; font-weight: bold;\"\u003ePart Numbers\u003c\/td\u003e\n    \u003ctd style=\"padding: 10px; border: 1px solid #e0e0e0;\"\u003eFB677\/08\u003c\/td\u003e\n  \u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003chr\u003e\n\n\u003ch3\u003eCompatibility \u0026amp; OEM Reference\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eFits the Following Vehicles:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eBMW 1 (E81, E82, E87, E88) 116 I (115 HP) 2004 \u0026gt; 2007\u003c\/li\u003e\n  \u003cli\u003eBMW 1 (E81, E82, E87, E88) 116 I (122 HP) 2009 \u0026gt; 2012\u003c\/li\u003e\n  \u003cli\u003eBMW 1 (E81, E82, E87, E88) 118 I (129 HP) 2004 \u0026gt; 2012\u003c\/li\u003e\n  \u003cli\u003eBMW 1 (E81, E82, E87, E88) 118 I (136 HP) 2008 \u0026gt;\u003c\/li\u003e\n  \u003cli\u003eBMW 1 (E81, E82, E87, E88) 118 I (143 HP) 2007 \u0026gt; 2012\u003c\/li\u003e\n  \u003cli\u003eBMW 1 (E81, E82, E87, E88) 120 I (150 HP) 2004 \u0026gt; 2007\u003c\/li\u003e\n  \u003cli\u003eBMW 1 (E81, E82, E87, E88) 120 I (156 HP) 2007 \u0026gt; 2012\u003c\/li\u003e\n  \u003cli\u003eBMW 1 (E81, E82, E87, E88) 120 I (170 HP) 2007 \u0026gt; 2012\u003c\/li\u003e\n  \u003cli\u003eBMW 3 (E90, E91, E92, E93) 316 I (116 HP) 2006 \u0026gt;\u003c\/li\u003e\n  \u003cli\u003eBMW 3 (E90, E91, E92, E93) 316 I (129 HP) 2007 \u0026gt;\u003c\/li\u003e\n  \u003cli\u003eBMW 3 (E90, E91, E92, E93) 316 I 1.6 (116 HP) 2008 \u0026gt;\u003c\/li\u003e\n  \u003cli\u003eBMW 3 (E90, E91, E92, E93) 318 I (129 HP) 2005 \u0026gt; 2007\u003c\/li\u003e\n  \u003cli\u003eBMW 3 (E90, E91, E92, E93) 318 I (143 HP) 2007 \u0026gt;\u003c\/li\u003e\n  \u003cli\u003eBMW 3 (E90, E91, E92, E93) 320 I (150 HP) 2005 \u0026gt; 2007\u003c\/li\u003e\n  \u003cli\u003eBMW 3 (E90, E91, E92, E93) 320 I (150 HP) 2006 \u0026gt; 2007\u003c\/li\u003e\n  \u003cli\u003eBMW 3 (E90, E91, E92, E93) 320 I (170 HP) 2006 \u0026gt;\u003c\/li\u003e\n  \u003cli\u003eBMW 3 (E90, E91, E92, E93) 320 SI (173 HP) 2005 \u0026gt; 2006\u003c\/li\u003e\n  \u003cli\u003eBMW X1 (E84) 18 I (150 HP) 2010 \u0026gt;\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eInterchange Part Numbers:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp style=\"font-family: monospace; font-size: 0.9em; color: #666; background-color: #f5f5f5; padding: 10px; border-radius: 4px;\"\u003e\nFB677\/08, 13717532754, 7532754\n\u003c\/p\u003e\n\n\u003chr\u003e\n\n\u003ch3\u003eThe Performance Promise\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eBuy with confidence.\u003c\/strong\u003e As tuners, we only recommend BMC because their filters provide the best balance between debris protection and laminar airflow. Your BMW’s engine deserves better than a paper clog. Fast shipping and expert support come standard.\u003c\/p\u003e","brand":"BMC","offers":[{"title":"Default Title","offer_id":47758415462648,"sku":"DS-BMW-FB677\/08","price":76.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/1290\/2648\/files\/FB677-08__07767.1602621994.1280.1280.jpg?v=1767728333","url":"https:\/\/performancechiptuning.com\/products\/performance-air-filter-for-bmw-1-series-3-series-x1-1","provider":"Performance Chip Tuning","version":"1.0","type":"link"}