{"product_id":"dinan-high-capacity-oil-cooler-system-e90-335i-cars-without-factory-oil-cooler","title":"Dinan Auxiliary Oil Cooler \/ Engine Oil Radiator Kit for BMW 3 Series 335i N54 Twin-Turbo E90\/E92 (2007–2010) – Upgrade \u0026 Retrofit for Cars Without Factory Oil Cooler – xDrive AWD Compatible – Performance Cooling, Track Day, Overheating Fix UK","description":"\u003cdiv\u003e\n  \u003ch2\u003eDinan Auxiliary Engine Oil Radiator Kit for BMW 3 Series 335i N54 - retrofit for cars without the OE cooler\u003c\/h2\u003e\n\n  \u003cp\u003e\n    Lower oil temperatures, protect your twin-turbo straight six and keep power consistent with this Dinan auxiliary engine oil radiator kit. Perfect for UK 3 Series owners running spirited B-road drives, fast road builds, remaps or regular track days, this high capacity heat exchanger adds the thermal headroom the N54 needs to stay sharp under sustained load.\n  \u003c\/p\u003e\n\n  \u003cp\u003e\n    Designed specifically for the 335i platform, this comprehensive retrofit solution replaces BMW’s missing factory lubrication cooling on cars that left the line without it. Expect noticeably cooler operating temps, more stable performance in hot weather and greater confidence when pushing hard. We have installed this package on customer cars and our own builds at MJ Modifications, and feedback has been consistently strong for both daily use and circuit work.\n  \u003c\/p\u003e\n\n  \u003ch3\u003eKey reasons enthusiasts choose this cooling package\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eHigh efficiency air-to-oil heat exchanger tailored to the N54 engine for robust temperature control\u003c\/li\u003e\n    \u003cli\u003eHelps prevent temperature-induced power reduction and limp mode during hard use\u003c\/li\u003e\n    \u003cli\u003eImproves reliability on stock, remapped and hybrid-turbo applications\u003c\/li\u003e\n    \u003cli\u003eComplete Dinan kit for vehicles that did not receive the factory oil radiator\u003c\/li\u003e\n    \u003cli\u003eProven on UK roads and track days with excellent customer feedback for consistency and peace of mind\u003c\/li\u003e\n    \u003cli\u003eIdeal foundation alongside other cooling mods such as an uprated intercooler or radiator\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eWho is it for\u003c\/h3\u003e\n  \u003cp\u003e\n    Drivers who want dependable oil temperature management on N54-powered 335i builds, including fast road cars, stage 1 and stage 2 remaps, heavy motorway mileage, summer touring and open pit lane events. A smart reliability mod for anyone who has seen high oil temps, fade during repeated pulls or wants to protect bearings, turbos and oil viscosity under sustained load.\n  \u003c\/p\u003e\n\n  \u003ch3\u003eVehicle compatibility\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eBMW 3 Series 335i N54, E90 saloon and E92 coupe, 2007 to 2010\u003c\/li\u003e\n    \u003cli\u003eCompatible with xDrive all-wheel drive models\u003c\/li\u003e\n    \u003cli\u003eFor vehicles that did not come with the original equipment oil cooler\u003c\/li\u003e\n  \u003c\/ul\u003e\n  \u003cp\u003e\n    If you are unsure whether your car originally had the OE lubrication cooler, please check before ordering or contact us for guidance.\n  \u003c\/p\u003e\n\n  \u003ch3\u003ePopular search terms\u003c\/h3\u003e\n  \u003cp\u003e\n    BMW 335i engine oil radiator kit, E90 3 Series oil temperature solution, E92 N54 cooling pack, 335i overheating fix UK, N54 oil temp drop, 335i track day cooling, 335i heat soak solution, BMW 335i aux oil cooler conversion, xDrive 4WD oil cooling, 335i reliability mods, N54 performance cooling, retrofit oil cooler for 335i, BMW 335i temperature management, fast road oil cooler 335i, UK BMW tuning parts.\n  \u003c\/p\u003e\n\n  \u003ch3\u003eInstallation and support\u003c\/h3\u003e\n  \u003cp\u003e\n    Professional fitting recommended. MJ Modifications offers expert installation at our Warwickshire workshop. For a fitting quote or to confirm compatibility, email \u003ca href=\"mailto:info@mjmodifications.co.uk\"\u003einfo@mjmodifications.co.uk\u003c\/a\u003e.\n  \u003c\/p\u003e\n\n  \u003cp\u003e\n    Give your N54-powered 335i the cooling it deserves with Dinan’s auxiliary oil radiator kit. Enjoy cooler temps, consistent performance and the confidence to drive your E90 or E92 exactly how you intended.\n  \u003c\/p\u003e\n\u003c\/div\u003e","brand":"Performance M","offers":[{"title":"Default Title","offer_id":55975111655810,"sku":"4cbxebmk43","price":3604.82,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0871\/5445\/8937\/files\/D570-0921__59559.1535040882.jpg?v=1763320612","url":"https:\/\/mjmodifications.co.uk\/products\/dinan-high-capacity-oil-cooler-system-e90-335i-cars-without-factory-oil-cooler","provider":"MJ Modifications","version":"1.0","type":"link"}