{"product_id":"blow-off-valve-diverter-for-bmw-z4-2011-2016-2-0l","title":"Blow off Valve Diverter for BMW Z4 (2011-2016) 2.0L","description":"\u003ch2\u003eBillet Diverter Valve Upgrade for 2011-2016 BMW Z4\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat it Does:\u003c\/strong\u003e The Blow Off Valve Diverter replaces the failure-prone factory plastic diverter mechanism on the 2011-2016 BMW Z4 to eliminate boost leaks, improve throttle response, and hold sustained boost pressure reliably under load.\u003c\/p\u003e\n\n\u003ch3\u003eThe Stock BMW Z4 Diverter Valve Weakness\u003c\/h3\u003e\n\u003cp\u003eThe factory diverter valve fitted to the \u003cstrong\u003eBMW E89 Z4\u003c\/strong\u003e with the \u003cstrong\u003eN20\u003c\/strong\u003e or \u003cstrong\u003eN26\u003c\/strong\u003e 2.0L turbocharged engine utilizes brittle plastic internal components and a diaphragm mechanism actuated solely by the stock electrical solenoid. Under continuous thermal cycling, boost spikes, and crankcase oil vapor exposure, the OE plastic piston cracks, deforms, or binds in the bore. Additionally, the weak factory spring cannot reliably hold elevated boost targets, opening prematurely and causing boost tapering, sluggish transition response, and drivetrain underboost faults.\u003c\/p\u003e\n\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003eThis pilot-actuated diverter upgrade replaces fragile stock internals with CNC-machined brass and anodized billet aluminum components while integrating directly with your factory electronic solenoid coil. Utilizing boost differential pressure rather than direct solenoid mechanical pull, the valve uses manifold boost pressure to seal the brass piston tighter against the compressor housing seat as boost rises. Upgraded Viton O-rings eliminate intercooler circuit boost leaks, while precision return springs maintain rapid spool-up response between shifts without throwing fault codes or venting unmetered air.\u003c\/p\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable width=\"100%\" style=\"border-collapse: collapse; border: 1px solid #e0e0e0; font-size: 14px; margin-bottom: 20px;\"\u003e\n  \u003ctr style=\"background-color: #f9f9f9;\"\u003e\n\u003cth style=\"padding:10px; text-align: left; border: 1px solid #e0e0e0;\"\u003eFitment\u003c\/th\u003e\n\u003ctd style=\"padding:10px; border: 1px solid #e0e0e0;\"\u003e2011-2016 BMW Z4\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003cth style=\"padding:10px; text-align: left; border: 1px solid #e0e0e0;\"\u003eEngine \/ Chassis\u003c\/th\u003e\n\u003ctd style=\"padding:10px; border: 1px solid #e0e0e0;\"\u003e\n\u003cstrong\u003eN20B20\u003c\/strong\u003e, \u003cstrong\u003eN26B20\u003c\/strong\u003e \/ \u003cstrong\u003eE89\u003c\/strong\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr style=\"background-color: #f9f9f9;\"\u003e\n\u003cth style=\"padding:10px; text-align: left; border: 1px solid #e0e0e0;\"\u003eStock Output\u003c\/th\u003e\n\u003ctd style=\"padding:10px; border: 1px solid #e0e0e0;\"\u003e240 hp \/ 260 lb-ft\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003cth style=\"padding:10px; text-align: left; border: 1px solid #e0e0e0;\"\u003eReplaces OEM Part #\u003c\/th\u003e\n\u003ctd style=\"padding:10px; border: 1px solid #e0e0e0;\"\u003eT9357 \/ BOV034 \/ \u003cstrong\u003e11657601058\u003c\/strong\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e2011-2016 BMW Z4 sDrive18i 2.0L Turbo (N20)\u003c\/li\u003e\n  \u003cli\u003e2011-2016 BMW Z4 sDrive20i 2.0L Turbo (N20)\u003c\/li\u003e\n  \u003cli\u003e2011-2016 BMW Z4 sDrive28i 2.0L Turbo (N20 \/ N26)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eDoes this fit the E89 Z4?\u003c\/strong\u003e\u003cbr\u003e Yes, this is a direct fit for the 2011-2016 BMW Z4 equipped with the N20 or N26 2.0L engine.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWill this valve throw a Check Engine Light (CEL) or require custom ECU tuning?\u003c\/strong\u003e\u003cbr\u003e No, it retains the factory electronic solenoid and maintains the factory closed-loop recirculation path, preventing unmetered air loss and avoiding CEL triggers.\u003c\/p\u003e\n\n\u003ch3\u003eThe BMW Precision Standard\u003c\/h3\u003e\n\u003cp\u003eDesigned specifically for tight European engine bay tolerances, this diverter assembly provides leak-free boost retention, rapid valve modulation, and complete integration with factory Bosch engine management without compromising roadster refinement.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":50516617822456,"sku":"DS-E7JWJ97B4","price":49.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/1290\/2648\/files\/blow-off-valve-diverter-for-bmw-z4-2011-2016-2-0l-1.jpg?v=1789489570","url":"https:\/\/performancechiptuning.com\/fr\/products\/blow-off-valve-diverter-for-bmw-z4-2011-2016-2-0l","provider":"Performance Chip Tuning","version":"1.0","type":"link"}