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The factory upper radiator hose on the E90 335d with the M57 engine is a known weak point, commonly failing at the plastic quick-connect fitting and leaving owners stranded. This billet aluminum upgrade kit eliminates that failure point by replacing the fragile OEM components with a precision-machined, leak-proof alternative designed to last the life of the vehicle. Made from 6061 aluminum, our connector is CNC-machined to exact OEM dimensions and anodized for corrosion resistance. The upgraded high-temp 4-ply silicone hose clamps directly onto the billet connector, simplifying the assembly while improving durability, flow, and heat resistance over stock. This kit is ideal for daily driving, high-mileage builds, and tuned setups running increased boost and load. Product Fits Manufacturer Name: BMW Chassis Code: E90 Model: 335d Year: 2009–2011 Engine Type: M57 All of our kits are custom-assembled in Vancouver and built to your spec. Because of this, each order is made to order and requires a lead time of approximately 2–3 weeks before shipping. This ensures every part meets our quality standards and fitment precision. We’ll notify you as soon as your order is ready to ship. If you need a faster turnaround, please contact us before purchasing.
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$330.00