Upper Radiator Expansion Tank Vent Hose

Product Details

Cooling system reliability is critical for maintaining peak engine performance on the road and track. The factory coolant expansion tank vent line runs across the top of the radiator and is subjected to constant heat radiation, leading to heat-soak failure and plastic fitting fatigue. URO Parts delivers a reliable aftermarket solution engineered to match original factory specifications for precise fitment and sustained durability. Built with robust rubber tubing and OE-spec quick-disconnect couplers, this line facilitates proper air bleeding and thermal fluid movement from the radiator to the expansion reservoir under high operating temperatures. Upgrading or replacing worn vent lines is essential preventative maintenance to guard against unexpected loss of coolant pressure.

Key Features

• Engineered to match factory dimensions for exact alignment across the top radiator support.

• Maintains proper system venting and pressure transfer between the radiator and reservoir.

• High-grade rubber and composite connectors designed to withstand thermal expansion and vibration.

• Plug-and-play installation utilizing factory-style retaining clip mechanism.

• Replaces hardened, brittle factory vent lines to protect against cooling system pressure loss.

Specifications

• Brand: URO Parts

• Part Number: 17127618510

• Superseded/Replaced Part Numbers: 17127565093, 17124513540, 17127531590

• Product Type: Expansion Tank Vent Line / Radiator Overflow Hose

• Material: Heat-Stabilized EPDM Rubber with Plastic Quick-Connects

• Attachment Style: Quick-Disconnect with Locking Wire Clips

• Location: Top Radiator to Coolant Expansion Tank

• Engine Compatibility: BMW 3.0L N51 / N52 Naturally Aspirated Engines

• Chassis Fitment: E82, E88, E90, E91, E92, E93 (128i, 325i, 325xi, 328i, 328xi, 330i, 330xi)

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