{"product_id":"nrw-s58-billet-valve-cover","title":"NRW S58 Billet Valve Cover","description":"\u003cp\u003e\u003cstrong\u003eEngineered for extreme performance. Machined from a single block of 6061 billet aluminum. Proven at 1,600+ WHP. Made in the USA.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eAfter more than a year of engineering, machining, and real-world testing, the NRW Design S58 Billet Valve Cover is a purpose-built solution for S58 owners who demand greater strength, durability, crankcase management, and craftsmanship.\u003c\/p\u003e\n\u003cp\u003eThe factory S58 valve cover is plastic and incorporates BMW's factory PCV system. Age, repeated heat cycling, increased power, and elevated crankcase demands can expose the limits of components designed around OEM operating conditions. Rather than recreating the factory cover in another material, NRW engineered this cover around the requirements of high-horsepower S58 applications.\u003c\/p\u003e\n\u003ch3\u003eMachined from a Single Block of 6061 Billet Aluminum\u003c\/h3\u003e\n\u003cp\u003eEach cover is precision CNC-machined from solid 6061 billet, giving a far more rigid structure with excellent dimensional stability and resistance to heat cycling, plus a precision-machined sealing surface for consistent gasket compression. No cast construction. No multi-piece main housing.\u003c\/p\u003e\n\u003ch3\u003ePurpose-Built Crankcase Management\u003c\/h3\u003e\n\u003cp\u003eThe design eliminates the factory PCV system and uses an external catch can configuration. Two integrated 12-ORB ports with -12AN swivel fittings provide large, robust connections for routing crankcase ventilation to a catch can, which becomes increasingly important as horsepower, cylinder pressure, and blow-by increase.\u003c\/p\u003e\n\u003ch3\u003eBuilt for Performance\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eIncreased structural rigidity over the factory plastic construction\u003c\/li\u003e\n\u003cli\u003eImproved long-term resistance to heat cycling and material degradation\u003c\/li\u003e\n\u003cli\u003ePrecision-machined gasket sealing surfaces\u003c\/li\u003e\n\u003cli\u003ePurpose-built external crankcase ventilation, internally baffled\u003c\/li\u003e\n\u003cli\u003eRobust billet-machined ORB connections\u003c\/li\u003e\n\u003cli\u003eImproved durability for demanding high-performance applications\u003c\/li\u003e\n\u003cli\u003eGreater flexibility when configuring high-horsepower crankcase ventilation\u003c\/li\u003e\n\u003cli\u003ePremium fit, finish, and craftsmanship\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eProven at 1,600+ WHP\u003c\/h3\u003e\n\u003cp\u003eTested on S58 applications producing upwards of 1,600 WHP, including record-setting S58 builds, with the valve cover and ventilation configuration managing crankcase pressure without related check-engine-light issues.\u003c\/p\u003e\n\u003ch3\u003eIncluded\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e1 × NRW Design S58 Billet Valve Cover (raw billet finish)\u003c\/li\u003e\n\u003cli\u003e2 × 12-ORB to -12AN Swivel Fittings\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eCatch can system, hoses, additional fittings, and plumbing are sold separately.\u003c\/p\u003e\n\u003cp\u003eDesigned, engineered, and machined in-house by NRW Design. Made in the USA.\u003c\/p\u003e","brand":"NRW Design","offers":[{"title":"Default Title","offer_id":67947580096666,"sku":"S58BVC-1","price":3495.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0611\/7569\/3466\/files\/S58-3.jpg?v=1792818993","url":"https:\/\/apexmotorsportswa.com\/products\/nrw-s58-billet-valve-cover","provider":"Apex Motorsport","version":"1.0","type":"link"}