{"product_id":"bmw-3-series-e36-e46-5-series-e39-x3-e83-x5-e53-z3-m52-m54-billet-aluminum-m-style-engine-cap-set-oil-filler-filter-power-steering-coolant-1992-2006","title":"BMW 3 Series E36 E46 \/ 5 Series E39 \/ X3 E83 \/ X5 E53 \/ Z3 M52 M54 Billet Aluminum M-Style Engine Cap Set Oil Filler Filter Power Steering Coolant 1992 - 2006","description":"\u003cp\u003e\nReplace four of the most commonly deteriorated factory plastic engine bay caps in a single kit with this precision CNC-machined 6061-T6 billet aluminum M-Style engine cap set, designed for BMW M52 and M54 engined E36, E46, E39, X3, X5, and Z3 platforms. The factory plastic oil filler cap, oil filter lid, power steering reservoir cap, and coolant expansion tank cap are all prone to cracking, discolouration, and fluid leakage as they age and are repeatedly exposed to engine heat. This complete four-piece aluminum set addresses all four failure points simultaneously — each component is engineered to OEM specifications, finished with a corrosion-resistant anodized surface, and designed to deliver a cleaner, more premium engine bay appearance alongside improved long-term reliability over the factory plastic equivalents.\n\u003c\/p\u003e\n\n\u003ch6\u003eFeatures:\u003c\/h6\u003e\n\u003cul\u003e\n\u003cli\u003eM-Style oil filler neck sealing cap – 6061-T6 aircraft aluminum with stainless steel locking tabs and anodized finish for rust and corrosion resistance\u003c\/li\u003e\n\u003cli\u003eOil filter lid cap – 36mm hexagonal head for tool-free installation and removal, premium aircraft aluminum for greater strength and hardness than the factory unit\u003c\/li\u003e\n\u003cli\u003ePower steering reservoir cap – retains all factory specifications including dipstick and ventilation holes, 6061 aluminum eliminates fluid leakage risk from plastic deterioration, supplied with a new gasket\u003c\/li\u003e\n\u003cli\u003eCoolant expansion tank cap – CNC machined T6061 billet aluminum rated to 2.0 bar maximum internal pressure, fits over the factory cover for a cleaner finish\u003c\/li\u003e\n\u003cli\u003eFull anodized surface finish across all four components for long-term corrosion and heat resistance\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch6\u003eSpecifications:\u003c\/h6\u003e\n\u003cul\u003e\n\u003cli\u003eCondition: 100% Brand New\u003c\/li\u003e\n\u003cli\u003eType: 4-Piece Billet Aluminum Engine Cap Set\u003c\/li\u003e\n\u003cli\u003eMaterial: 6061-T6 Billet Aluminum Alloy\u003c\/li\u003e\n\u003cli\u003eSurface Finish: Anodized\u003c\/li\u003e\n\u003cli\u003eProcessing: CNC Machined\u003c\/li\u003e\n\u003cli\u003eCoolant Cap Max Pressure: 2.0 Bar\u003c\/li\u003e\n\u003cli\u003eOil Filter Cap Head: 36mm Hexagonal\u003c\/li\u003e\n\u003cli\u003eCompatible Engines: M52 · M52TU · M54\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch6\u003eOEM Reference Part Numbers:\u003c\/h6\u003e\n\u003cul\u003e\n\u003cli\u003eOil Filler Cap: 11127509328 · 11121405452 · 11121743294 · 11128655331 · 11127500568 · 11127560482\u003c\/li\u003e\n\u003cli\u003eOil Filter Cap: 11421744000 · O-Ring: 11421741000\u003c\/li\u003e\n\u003cli\u003ePower Steering Cap: 32416851332 · 32411128332 · 32410141427 · 32411128333\u003c\/li\u003e\n\u003cli\u003eCoolant Cap: 17111742231 · 17110152374 · 17111712492 · 17111712669 · 17117639022\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch6\u003eFitment:\u003c\/h6\u003e\n\u003cul\u003e\n\u003cli\u003eBMW 3 Series E36 323i · 328i M52 Engine (1992–1998)\u003c\/li\u003e\n\u003cli\u003eBMW 3 Series E46 325i · 328i · 330i (1999–2005)\u003c\/li\u003e\n\u003cli\u003eBMW 5 Series E39 525i · 528i · 530i M52 · M54 Engine (1997–2003)\u003c\/li\u003e\n\u003cli\u003eBMW X3 E83 2.5i · 3.0i M54 Engine (2004–2006)\u003c\/li\u003e\n\u003cli\u003eBMW X5 E53 3.0i (2000–2006)\u003c\/li\u003e\n\u003cli\u003eBMW Z3 E36\/7 · E36\/8 2.8 · 3.0 M52 · M54 Engine (1999–2002)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch6\u003eCompatibility Notes:\u003c\/h6\u003e\n\u003cul\u003e\n\u003cli\u003eOil filler cap: compatible with 2-prong cap style only – will not fit aluminum valve covers, aftermarket valve covers, or B58\/S58 engine applications\u003c\/li\u003e\n\u003cli\u003eOil filter cap: compatible with M52 and M54 engine families only – confirm engine code before ordering\u003c\/li\u003e\n\u003cli\u003ePower steering cap: retains factory dipstick and ventilation hole specifications\u003c\/li\u003e\n\u003cli\u003eCoolant cap: fits over the existing factory cover – confirm related part numbers match before ordering\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch6\u003eContents:\u003c\/h6\u003e\n\u003cul\u003e\n\u003cli\u003e1x M-Style Billet Aluminum Oil Filler Neck Sealing Cap\u003c\/li\u003e\n\u003cli\u003e1x Billet Aluminum Oil Filter Lid Cap\u003c\/li\u003e\n\u003cli\u003e1x Billet Aluminum Power Steering Reservoir Cap \u0026amp; New Gasket\u003c\/li\u003e\n\u003cli\u003e1x Billet Aluminum Coolant Expansion Tank Cap\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch6\u003eBenefits:\u003c\/h6\u003e\n\u003cul\u003e\n\u003cli\u003eAddresses four of the most common plastic cap failure and deterioration points on M52 and M54 engine applications in a single purchase\u003c\/li\u003e\n\u003cli\u003eBillet aluminum construction eliminates cracking, discolouration, and leakage risk associated with aged factory plastic caps\u003c\/li\u003e\n\u003cli\u003eTool-free oil filter cap removal with the 36mm hex head – no filter cap removal tool required\u003c\/li\u003e\n\u003cli\u003ePower steering reservoir cap supplied with a new gasket – ensures a leak-free seal from day one\u003c\/li\u003e\n\u003cli\u003eClean anodized finish delivers a noticeably more premium engine bay appearance\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch6\u003eInstallation Notes:\u003c\/h6\u003e\n\u003cul\u003e\n\u003cli\u003eWear gloves during installation – cap threads are sharp and may cause scratching on bare hands\u003c\/li\u003e\n\u003cli\u003eOil filler cap is compatible with 2-prong cap style only – not suitable for aluminum or aftermarket valve covers, or B58\/S58 engines\u003c\/li\u003e\n\u003cli\u003eOil filter cap is for M52 and M54 engine families only – confirm engine code before ordering\u003c\/li\u003e\n\u003cli\u003eCoolant cap fits over the existing factory cover – verify related OEM part numbers before ordering\u003c\/li\u003e\n\u003cli\u003eIf unsure about compatibility with your specific engine or chassis variant, contact our team with your chassis code and engine code before ordering\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch6\u003eWarranty:\u003c\/h6\u003e\n\u003cul\u003e\n\u003cli\u003e12-month standard warranty from date of purchase\u003c\/li\u003e\n\u003cli\u003eContact our support team for assistance with any issues\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"K2 Industries","offers":[{"title":"Red","offer_id":48610666217655,"sku":"1005010758359923-Red","price":199.99,"currency_code":"USD","in_stock":true},{"title":"Blue","offer_id":48610666250423,"sku":"1005010758359923-Blue","price":199.99,"currency_code":"USD","in_stock":false}],"url":"https:\/\/milkymotorsports.com\/products\/bmw-3-series-e36-e46-5-series-e39-x3-e83-x5-e53-z3-m52-m54-billet-aluminum-m-style-engine-cap-set-oil-filler-filter-power-steering-coolant-1992-2006","provider":"Milky Motorsports","version":"1.0","type":"link"}