OE-Style Lower Coolant Hose Kit

Rein CHK0033 is a specific-fit radiator coolant hose kit for European cooling systems that require a lower hose with an integrated temperature sensor. It is built as a direct replacement for the original hose assembly, with the sensor pre-installed and quick-connect style fittings for the listed BMW applications.

• Specific-fit radiator coolant hose kit
• Black EPDM hose construction
• Standard replacement grade
• Pre-installed temperature sensor
• Quick connector style ends
• Direct replacement for OE hose assembly

Fitment Details

Compatible With 2004-2005 BMW 525i, lower position, including temp. switch and quick connectors. Compatible With 2004-2005 BMW 530i, lower position, including temp. switch and quick connectors. Rein CHK0033 is the correct lower radiator coolant hose kit for these BMW 5 Series applications when the original assembly uses the same sensor and connector layout.

This part cross-references BMW 17127519257 for the same application.

What It Helps Address

• Cracked or leaking lower radiator hose assemblies
• Failed hose connections at the quick-connect fittings
• Temperature sensor issues caused by reusing an old sensor
• Cooling system service on 2004-2005 BMW 525i and 530i models
• Replacement of worn EPDM hose material in the lower cooling circuit

Installation Notes

Verify the lower hose routing, connector style, and sensor configuration before installation. This kit includes the temperature sensor pre-installed, so the old sensor does not need to be transferred. Confirm the vehicle uses the listed lower-position hose with quick connectors before ordering CHK0033.

Quality Assurance

Rein supplies OE-quality cooling components for European vehicles, with hose dimensions, branch shape, and thermoplastic quick-connect details matched to the original assembly. CHK0033 is built as a direct OE-style replacement for the specified BMW fitments.