{"product_id":"darkside-developments-upgraded-valve-springs-for-bmw-n57-b57-3-0-diesel-engines","title":"Darkside Developments Upgraded Valve Springs for BMW N57 \/ B57 3.0 Diesel Engines","description":"\u003ch3\u003eUpgraded Performance Valve Spring Kit for BMW N57 \/ B57 3.0 Diesel Engines\u003c\/h3\u003e\n\u003cp\u003eA complete set of uprated performance valve springs designed for BMW's 6-cylinder 3.0 litre N57 and B57 diesel engines. Standard valve springs are one of the first limiting factors once you push a modified diesel beyond its factory operating window — higher boost, more fuel and a raised rev ceiling all increase the load the spring has to control.\u003c\/p\u003e\n\n\u003ch3\u003eWhy upgrade your valve springs?\u003c\/h3\u003e\n\u003cp\u003eAt elevated RPM or with aggressive camshaft profiles, factory springs can allow valve float and valve bounce, where the valve loses contact with the cam and no longer seals properly. Beyond the immediate power loss, this risks valve-to-piston contact and severe engine damage. These springs deliver substantially higher seat and open pressures to keep the valvetrain under control.\u003c\/p\u003e\n\u003cp\u003eThey are an essential upgrade for any built N57 or B57 running performance camshafts, a raised rev limit, or significantly increased boost pressure.\u003c\/p\u003e\n\n\u003ch3\u003ePerformance Gains\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeat pressure:\u003c\/strong\u003e 60 lbs — a 60% increase over standard\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOpen pressure @ 9mm lift:\u003c\/strong\u003e 91 lbs — a 55% increase over standard\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum lift:\u003c\/strong\u003e 10.7mm — suits aggressive performance camshaft profiles\u003c\/li\u003e\n\u003cli\u003eEliminates valve float and valve bounce at high RPM\u003c\/li\u003e\n\u003cli\u003eSupports higher boost and increased fuelling safely\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eKit Contents\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e24x Darkside Performance Valve Springs (full engine set)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSeat Pressure\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e60 lbs (+60% vs standard)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOpen Pressure @ 9mm Lift\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e91 lbs (+55% vs standard)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMaximum Lift\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e10.7mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eEngine Family\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eBMW N57 \/ B57 6-cylinder 3.0 diesel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eReplaces OE Part Numbers\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e11347805366 \/ 11 34 7 805 366\u003cbr\u003e11347797714 \/ 11 34 7 797 714\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eWhat's Included\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e24 x Darkside Performance Valve Springs\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eEngine Compatibility\u003c\/h3\u003e\n\u003cp\u003eSuits the following engine codes: \u003cstrong\u003eN57, N57N, N57S, N57X, N57Z, B57, B57S\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003ch3\u003eVehicle Fitment\u003c\/h3\u003e\n\u003cp\u003eThis kit covers a very broad range of BMW diesel models. Fitment is determined by engine code — if your vehicle runs any N57 or B57 variant listed above, this kit suits.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e3 Series:\u003c\/strong\u003e 325d, 330d, 330dX, 330xd, 335dX — E90N, E91N, E92, E92N, E93, E93N, F30, F30N, F31, F31N, F34, F34N, G20, G21\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e4 Series:\u003c\/strong\u003e 430d, 430dX, 435dX — F32, F32N, F33, F33N, F36, F36N\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e5 Series:\u003c\/strong\u003e 525d, 530d, 530dX, 535d, 535dX, 540dX, M550dX — F07, F07N, F10, F10N, F11, F11N, G30, G31\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e6 Series:\u003c\/strong\u003e 630d, 630dX, 640d, 640dX — F06, F06N, F12, F12N, F13, F13N, G32\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e7 Series:\u003c\/strong\u003e 730d, 730dX, 730Ld, 730LdX, 740d, 740dX, 740LdX, 750dX, 750LdX — F01, F01N, F02, F02N, G11, G11N, G12, G12N\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e8 Series:\u003c\/strong\u003e 840dX — G14, G15, G16\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eX Models:\u003c\/strong\u003e X3 30dX \/ 35dX \/ M40dX, X4 30dX \/ 35dX \/ M40dX, X5 25dX \/ 30dX \/ 35dX \/ 40dX \/ M50dX, X6 30dX \/ 40dX \/ M50dX, X7 30dX \/ M50dX — E70N, E71, F15, F16, F25, F26, G01, G02, G05, G06, G07\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eImportant Notes\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eInstallation requires removal of the camshafts and specialist valve spring compression tooling. This is a workshop-level job — professional installation is strongly recommended.\u003c\/li\u003e\n\u003cli\u003eSuits N57 and B57 engines only. This kit does \u003cstrong\u003enot\u003c\/strong\u003e fit the earlier M57 engine.\u003c\/li\u003e\n\u003cli\u003eSold as a complete 24-spring engine set.\u003c\/li\u003e\n\u003cli\u003eIn stock and ready to ship from our Melbourne warehouse. Contact us if you need multiple sets.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Darkside Developments","offers":[{"title":"Default Title","offer_id":51247999942692,"sku":"BMW1281","price":328.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1352\/3759\/files\/darkside-uprated-valve-springs-bmw-n57-b57.jpg?v=1786438025","url":"https:\/\/www.4x4andcamping.com\/products\/darkside-developments-upgraded-valve-springs-for-bmw-n57-b57-3-0-diesel-engines","provider":"QIKAZZ 4x4 \u0026 Camping","version":"1.0","type":"link"}