{"product_id":"mmx-bmw-s58-b48e-billet-oil-filler-cap","title":"MMX BMW S58 \u0026 B48E Billet Oil Filler Cap For G80\/G81 M3, G82\/G83 M4 \u0026 G87 M2","description":"\u003cp\u003eThe \u003cstrong\u003eMMX BMW S58 \u0026amp; B48E Billet Oil Filler Cap\u003c\/strong\u003e is designed and machined in the UK from a solid piece of billet aluminium as a direct replacement for the factory plastic cap. It is not a cover glued over the original item: the OE cap is removed and this one takes its place, sealing on the same thread with the same torque.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eCheck The OE Part Number First\u003c\/h3\u003e\n\u003cp\u003eBMW uses several different oil filler cap threads across its modern range, so fitment is determined by the part number rather than by model. This cap replaces \u003cstrong\u003eOE part number 11 12 8 654 637\u003c\/strong\u003e, which is stamped on the underside of the factory cap. Turning the existing cap over and reading that number takes seconds and guarantees the right part.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eA Real Replacement, Properly Sealed\u003c\/h3\u003e\n\u003cp\u003eStick-on caps add height, can work loose, and trap oil residue between the cover and the original plastic. A machined replacement carries its own seal, threads onto the cam cover exactly as the factory item does, and can be removed and refitted for every oil service without any loss of sealing integrity.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eCNC-machined in the UK from solid billet aluminium\u003c\/li\u003e\n\u003cli\u003eDirect replacement for OE part number 11 12 8 654 637\u003c\/li\u003e\n\u003cli\u003eNot an adhesive cover – the factory cap is replaced outright\u003c\/li\u003e\n\u003cli\u003eAnodised finish for lasting corrosion resistance\u003c\/li\u003e\n\u003cli\u003eKnurled grip for easy removal at service intervals\u003c\/li\u003e\n\u003cli\u003eFully reversible – the OEM cap can be refitted at any time\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e MMR03-1601\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReplaces OE:\u003c\/strong\u003e 11 12 8 654 637\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Billet aluminium, anodised\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eBMW S58 engines – G80 M3, G81 M3 Touring, G82\/G83 M4, G87 M2, F97 X3M, F98 X4M\u003c\/li\u003e\n\u003cli\u003eBMW B48E engines fitted with OE cap 11 12 8 654 637\u003c\/li\u003e\n\u003cli\u003eAlways confirm the OE part number on the underside of the existing cap\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eHow is fitment confirmed?\u003c\/strong\u003e\u003cbr\u003eRemove the factory oil cap and read the part number moulded into the underside. If it reads 11 12 8 654 637, this cap fits.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDoes it fit a B58 engine?\u003c\/strong\u003e\u003cbr\u003eNo. B58, N55, S54, S55 and S63 engines generally use OE cap 11 12 8 655 331, which MMX covers with a separate billet cap.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eWhy Choose An MMX Billet Cap?\u003c\/h3\u003e\n\u003cp\u003eAn engine bay is judged on its details, and the oil filler cap is the one part every technician and every passenger sees. MMX machines these properly, seals them properly, and finishes them to last. R44 Performance stocks the full MMX under-bonnet dress-up range.\u003c\/p\u003e","brand":"MMX","offers":[{"title":"Default Title","offer_id":57929971106174,"sku":"MMR03-1601","price":98.27,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0280\/7568\/8011\/files\/Artboard1_e1ded2cb-bdad-4e97-b041-3804b50b3e8b.png?v=1787916846","url":"https:\/\/r44performance.com\/products\/mmx-bmw-s58-b48e-billet-oil-filler-cap","provider":"R44 Performance","version":"1.0","type":"link"}