{"product_id":"mosselman-n54-n55-s55-oil-thermostat-titanium-gr5-hex-race-bolt-set-inc-m135i-335i-m2-m4","title":"Mosselman MSL Titanium GR5 Hex-Race Oil Thermostat Bolt Set for BMW N54 N55 S55 (M8 x 25mm, 3x) - Fits M135i M235i 335i 435i Z4 35i M2 M3 M4","description":"\u003cdiv class=\"product__description rte\"\u003e\n  \n  \u003ch2\u003eMosselman MSL Titanium GR5 Hex-Race Fastener Set for BMW Oil Thermostat Housing\u003c\/h2\u003e\n  \n  \u003cp\u003eGive your BMW’s oil thermostat housing the motorsport treatment with this \u003cstrong\u003egenuine Mosselman MSL\u003c\/strong\u003e titanium fastener set. Engineered from \u003cstrong\u003eTi-6Al-4V Grade 5\u003c\/strong\u003e for outstanding strength-to-weight and heat resistance, these race-spec hex head fixings are a precise \u003cstrong\u003eOEM replacement\u003c\/strong\u003e for the original thermostat cover screws on \u003cstrong\u003eN54, N55 and S55\u003c\/strong\u003e engines. Ideal for spirited road driving and track-day use, they deliver dependable clamping, crisp torque feel and stainless-like corrosion resistance in a fraction of the weight of steel hardware.\u003c\/p\u003e\n  \n  \u003cp\u003eWe run these titanium bolts on our own builds and customer cars. Feedback has been excellent, with consistent torque accuracy during installation and faultless reliability across repeated heat cycles. If you are refreshing the thermostat housing or fitting a Mosselman unit, this is the smart upgrade over standard steel bolts.\u003c\/p\u003e\n  \n  \u003ch3\u003eWhy choose this titanium bolt kit\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eUltra strong Ti-6Al-4V Grade 5 construction for high tensile performance\u003c\/li\u003e\n    \u003cli\u003eSignificantly lighter than steel fixings to trim engine bay mass\u003c\/li\u003e\n    \u003cli\u003eExcellent heat and oxidation resistance for high temperature environments\u003c\/li\u003e\n    \u003cli\u003eHex head design for positive tool engagement and consistent torque application\u003c\/li\u003e\n    \u003cli\u003eDirect swap for factory thermostat cover screws on N54, N55, S55\u003c\/li\u003e\n    \u003cli\u003ePerfect for tuned engines, fast road and circuit use\u003c\/li\u003e\n    \u003cli\u003eCorrect size and thread: \u003cstrong\u003eM8 x 25 mm\u003c\/strong\u003e\n\u003c\/li\u003e\n  \u003c\/ul\u003e\n  \n  \u003ch3\u003eWhat you receive\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003e3 x \u003cstrong\u003eM8 x 25 mm\u003c\/strong\u003e Grade 5 titanium hex bolts\u003c\/li\u003e\n  \u003c\/ul\u003e\n  \n  \u003ch3\u003eFitment coverage\u003c\/h3\u003e\n  \u003cp\u003eDesigned for BMW models using N54, N55 and S55 engines, including but not limited to:\u003c\/p\u003e\n  \u003cul\u003e\n    \u003cli\u003e1 Series: 135i E82 N54, 135i E82 N55, 1M E82 N54, M135i F20 F21 N55, M235i F22 N55\u003c\/li\u003e\n    \u003cli\u003e2 Series: M2 F87 N55, M2 Competition F87 S55\u003c\/li\u003e\n    \u003cli\u003e3 Series: 335i E90 E91 E92 N54, 335i E90 E91 E92 N55, 335i F30 F31 N55, 335i GT F34 N55\u003c\/li\u003e\n    \u003cli\u003e4 Series: 435i F32 F33 N55, 435i Gran Coupe F36 N55\u003c\/li\u003e\n    \u003cli\u003eZ4: 35i E89 N54, 35i LCI E89 N54, 35is E89 N54\u003c\/li\u003e\n    \u003cli\u003eM cars: M3 F80 S55 including Competition and CS, M4 F82 F83 S55 including Competition, CS and GTS\u003c\/li\u003e\n  \u003c\/ul\u003e\n  \u003cp\u003eChassis keywords for search: E82, E90, E91, E92, E89, F20, F21, F22, F30, F31, F34, F32, F33, F36, F80, F82, F83, F87.\u003c\/p\u003e\n  \n  \u003ch3\u003eInstallation\u003c\/h3\u003e\n  \u003cp\u003eDirect replacement fasteners for the oil thermostat housing. We recommend torquing to factory specifications. A light application of suitable anti-seize on titanium threads is good practice.\u003c\/p\u003e\n  \u003cp\u003eNeed fitting or a quote for installation and fluids at the same time? Book with \u003cstrong\u003eMJ Modifications\u003c\/strong\u003e in Warwickshire. Email \u003ca href=\"mailto:info@mjmodifications.co.uk\"\u003einfo@mjmodifications.co.uk\u003c\/a\u003e.\u003c\/p\u003e\n  \n  \u003ch3\u003eCompatibility check\u003c\/h3\u003e\n  \u003cp\u003eWe can verify fitment before dispatch. Add your UK registration or the last 7 digits of your VIN at checkout.\u003c\/p\u003e\n  \n  \u003ch3\u003eTrusted UK supplier\u003c\/h3\u003e\n  \u003cp\u003eWe stock genuine Mosselman hardware and ship quickly across the UK. Popular search terms: BMW oil thermostat bolts, thermostat housing screws, titanium fasteners for N54 N55 S55, M2 M3 M4 titanium hardware, M8x25 thermostat cover bolts, BMW performance parts UK, cooling system hardware upgrade, race spec bolt kit.\u003c\/p\u003e\n\n\u003c\/div\u003e","brand":"Mosselman","offers":[{"title":"Default Title","offer_id":56008679981442,"sku":null,"price":24.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0871\/5445\/8937\/files\/MosselmanN54N55S55OilThermostatTitaniumGR5Hex-RaceBoltSet_Inc.M135i_335i_M2_M4_1946x_23cea609-fd06-4370-bc16-b71c55116ab0.png?v=1764090586","url":"https:\/\/mjmodifications.co.uk\/products\/mosselman-n54-n55-s55-oil-thermostat-titanium-gr5-hex-race-bolt-set-inc-m135i-335i-m2-m4","provider":"MJ Modifications","version":"1.0","type":"link"}