{"product_id":"nrw-design-bmw-billet-oil-cap","title":"NRW-Design BMW Billet Oil Cap","description":"\u003cp\u003eThe \u003ca href=\"https:\/\/ind-distribution.com\/collections\/nrw-design\"\u003eNRW-Design\u003c\/a\u003e BMW Billet Oil Cap was engineered to address one of the most common and persistent issues affecting BMW engines across multiple generations. From naturally aspirated M engines to modern turbocharged platforms, the factory plastic oil filler cap can allow oil seepage that leaves residue across the valve cover, even when replaced with a new OEM cap.\u003c\/p\u003e\n\u003cp\u003eThe issue became especially apparent during the development of NRW Design's aluminum S65 valve cover. In several cases, what initially appeared to be a valve cover leak was traced back to the factory oil cap. Replacing the original cap with a brand-new Genuine BMW component did not always resolve the problem, confirming that the factory cap design itself could remain a source of seepage.\u003c\/p\u003e\n\u003cp\u003eNRW Design initially developed its Ultimate Oil Cap as a multi-piece billet assembly with a threaded funnel attachment and an optional -10 ORB port for custom crankcase ventilation applications. While that design remains well suited for specialized builds, many BMW owners needed a simpler solution that retained the factory-style operation and appearance.\u003c\/p\u003e\n\u003cp\u003eThe NRW-Design BMW Billet Oil Cap was developed as a direct OEM-style replacement. Each cap is precision CNC-machined from a single piece of 6061-T6 billet aluminum and uses factory-style locking tabs with a dedicated gasket sealing surface. This construction provides improved rigidity, consistent engagement, and long-term durability compared to the original plastic cap.\u003c\/p\u003e\n\u003cp\u003eAvailable in hard anodized black or a raw machined finish, the cap features laser-etched NRW Design branding and is compatible with both OEM and NRW Design Viton oil cap gaskets. The understated design maintains a clean, period-correct appearance across older BMW M applications while also complementing modern engine bays.\u003c\/p\u003e\n\u003cp\u003eDesigned and manufactured in the USA, the NRW-Design BMW Billet Oil Cap is included with current NRW Design valve covers and is also available separately for BMW owners looking to replace the factory oil filler cap with a durable billet aluminum alternative.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eProduct Details\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eCNC-machined from 6061-T6 billet aluminum\u003c\/li\u003e\n\u003cli\u003eSingle-piece billet construction\u003c\/li\u003e\n\u003cli\u003eDirect replacement for the factory BMW plastic oil filler cap\u003c\/li\u003e\n\u003cli\u003eUses factory-style locking tabs for OEM-style operation\u003c\/li\u003e\n\u003cli\u003ePrecision-machined gasket sealing surface\u003c\/li\u003e\n\u003cli\u003eCompatible with OEM and NRW Design Viton oil cap gaskets\u003c\/li\u003e\n\u003cli\u003eAvailable in hard anodized black or raw machined finish\u003c\/li\u003e\n\u003cli\u003eLaser-etched NRW Design branding\u003c\/li\u003e\n\u003cli\u003eDesigned and manufactured in the USA\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eAdditional Compatibility\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eAlso fits many additional BMW applications using the same factory oil filler cap design.\u003c\/li\u003e\n\u003cli\u003eCompatible engine families include S65, S85, N54, N55, B58, S63 and other BMW engines with the corresponding factory-style cap interface.\u003c\/li\u003e\n\u003cli\u003eVerify compatibility with the vehicle and engine before ordering.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"NRW-Design","offers":[{"title":"Black Anodized","offer_id":51465609773220,"sku":"BCAPNCB","price":142.93,"currency_code":"CAD","in_stock":true},{"title":"Raw Machined","offer_id":51465609805988,"sku":"BCAPNCR","price":142.93,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0013\/9929\/1964\/files\/nrw-design-bmw-billet-oil-cap-white-background.jpg?v=1788551116","url":"https:\/\/www.amtuning.ca\/products\/nrw-design-bmw-billet-oil-cap","provider":"AM Tuning Canada","version":"1.0","type":"link"}