{"product_id":"auto-parts-prodigy-bmw-n52-crankcase-vent-breather-hose-kit-2006-2007-3-0l-with-pcv-valve-oil-separator","title":"Auto Parts Prodigy BMW N52 Crankcase Vent Breather Hose Kit — 2006–2007 3.0L with PCV Valve \u0026 Oil Separator","description":"\u003cp\u003e\u003cstrong\u003eThis Auto Parts Prodigy breather hose kit replaces the worn BMW N52 PCV components to restore proper crankcase ventilation and stop vacuum leaks in 2006–2007 3.0L N52 engines.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eIf your 2006–2007 BMW 325i, 330i, 525i, 530i or Z4 is showing rough idle, oil consumption, or P0171\/P0174 lean codes, the likely culprit is a failing PCV\/breather hose system. This complete five-piece kit is engineered to the same dimensions as the original parts and includes the pressure-regulating PCV valve, oil separator return hoses, manifold breather hose, valve cover connectors, and all required O-rings and grommets so you can perform a confident DIY replacement.\u003c\/p\u003e\n\n\u003ch3\u003eHow does this kit stop rough idle and oil burning?\u003c\/h3\u003e\n\u003cp\u003eA failing crankcase ventilation path creates vacuum leaks and inconsistent crankcase pressure, which can lead to lean engine codes and oil being drawn into the intake. The kit restores the correct sealed routing and pressure control to the crankcase through a precision valve and new return hoses.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eReplaces worn hoses and valves that cause vacuum leaks and oil ingestion.\u003c\/li\u003e\n  \u003cli\u003ePressure-regulating valve holds target crankcase vacuum (approx. 0.5–1.0 psi).\u003c\/li\u003e\n  \u003cli\u003eNew O-rings and grommets ensure leak-free seals at valve cover and manifold connections.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWill this fit my BMW N52 engine and which OEM numbers does it replace?\u003c\/h3\u003e\n\u003cp\u003eThe kit was designed specifically for 3.0L N52 engines built into E90, E91, E60 and E61 chassis from model years 2006–2007. It directly replaces the factory parts and matches the dimensions for a plug-and-play swap.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eCompatible with 2006–2007 325i, 325xi, 330i, 330xi, 525i, 525xi, 530i, 530xi and Z4 models with the N52 engine.\u003c\/li\u003e\n  \u003cli\u003eReplaces BMW part numbers 11617531423, 11617504535, 11617522923.\u003c\/li\u003e\n  \u003cli\u003eIncludes a simple installation guide and torque specs for fast, correct fitment.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat materials and longevity can I expect from these parts?\u003c\/h3\u003e\n\u003cp\u003eThe hoses are made from reinforced, heat-resistant rubber designed to tolerate high underhood temperatures, while the valve uses durable composite and brass internals for consistent performance. That construction resists cracking and deformation that commonly shortens the life of cheap replacements.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eReinforced rubber hoses rated for sustained high temperatures (300°F+).\u003c\/li\u003e\n  \u003cli\u003ePrecision-machined brass internals in the regulator for steady vacuum control.\u003c\/li\u003e\n  \u003cli\u003eComposite assemblies engineered to last 60,000+ miles under normal use.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow difficult is installation and what’s included in the box?\u003c\/h3\u003e\n\u003cp\u003eThe kit was built for DIY mechanics and professional shops alike: pre-formed hoses match OEM lengths so no trimming is required, and no specialty tools are needed beyond a standard socket set. The average installation time is under an hour for anyone comfortable working under the hood.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eComplete five-piece replacement: PCV valve, oil separator return hoses (24cm and 12cm), valve-to-manifold hose (18.5cm), valve cover fittings.\u003c\/li\u003e\n  \u003cli\u003eAll O-rings and grommets included; pre-formed hoses for plug-and-play installation.\u003c\/li\u003e\n  \u003cli\u003eDetailed install guide with torque specs and link to step-by-step video to save dealer labor costs.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for? This Auto Parts Prodigy kit is aimed at BMW owners and independent mechanics troubleshooting rough idle, oil consumption, or lean codes on 2006–2007 N52-equipped cars who want an OEM-dimension replacement that’s durable, straightforward to install, and saves on dealer repair costs. If you can change basic routine parts like spark plugs or intake hoses, you can replace this PCV system and restore reliable crankcase ventilation.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Will this kit stop P0171\/P0174 lean codes?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Replacing deteriorated PCV hoses and valves with this kit often resolves vacuum leaks that trigger those codes, but accurate diagnosis is recommended.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: How long does installation take for a DIYer?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Typical installation takes about 30–45 minutes with basic hand tools and the included guide.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Auto Parts Prodigy","offers":[{"title":"Default Title","offer_id":67586632122553,"sku":"B0CXTN2HK3","price":154.75,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0822\/3765\/3177\/files\/auto-parts-prodigy-front-packaging-bmw-n52-kit.jpg?v=1790488649","url":"https:\/\/redleafauto.ca\/products\/auto-parts-prodigy-bmw-n52-crankcase-vent-breather-hose-kit-2006-2007-3-0l-with-pcv-valve-oil-separator","provider":"Redleaf Auto","version":"1.0","type":"link"}