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BMW · Cooling

BMW N54 Upper Radiator Hose Replacement

I'm replacing the upper radiator hose on an N54-powered BMW. If you're looking at a coolant leak, a damaged hose connection, or a cooling-system refresh on a 335i, 135i, or 535i, this video lets you see the hose and the actual job instead of guessing from a diagram.

335i / 135i / 535iMay 5, 202151,398 views
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What you’ll see in this one

The plastic fittings and how the hose connects are worth a close look. Check your specific model and year before ordering a replacement.

A closer look at this job

This is an upper radiator hose repair on the BMW N54 cooling system. Start by identifying where coolant is escaping: the hose itself, the quick-connect joint, and nearby parts can present similar symptoms. The clip provides a view of the hose location and replacement work. If you're researching 335i coolant loss or a cracked N54 upper radiator hose, compare the connections with your vehicle and confirm fitment by VIN. Cooling-system pressure and coolant handling require care when the engine has been running.

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BMW N54 upper radiator hose replacement335i top radiator hose leakN54 plastic coolant hose connectorBMW 135i upper radiator hoseBMW 535i radiator hose location

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