Aluminum Water Hose Fitting for N54 335i 335xi 135i 325i 330i 3.0L G20242339626 Features: This product is made from high-strength aerospace aluminum. It is designed to maximize resistance to breakage, providing improved durability compared to the OEM fitting. The coolant flow path through the center of the fitting is optimized to enhance coolant flow. The internal surface area of the flow path is larger than that of OEM components, further improving cooling performance. This hose connects from the coolant thermostat housing to the front of the engine head. The factory plastic fitting on this hose is a known weak point in the cooling system and is prone to cracking and leaking. This aluminum replacement fitting provides a durable, long-lasting solution that will not crack, wear out, or leak. The fitting is a direct replacement for the stock plastic part and requires no modifications to any component of the system. Constructed from high-quality aluminum alloy, it is durable and wear-resistant. The internal design eliminates sharp corners, ensuring smooth coolant passage without damage. Built to factory original equipment specifications to ensure a precise fit. Installation is straightforward: remove the hose end from the original plastic fitting, remove the old fitting from the head, install the new aluminum fitting into the head, then reattach the hose and hose clamp. Specifications: Material: Aluminum Alloy Length: Approx. 4.3 cm (1.69 inches) Color: Silver / Red / Black / Blue Fits: 3 Series N54 335i 335xi 135i 325i 330i 3.0L OEM Part Number: 11537541992 Note: - Please allow 1–2 cm variation due to manual measurement. - Due to differences in monitor displays, the actual color may vary slightly from the image. Package Includes: 1 x Water Hose Fitting