Rein CHT0903 Turbocharger Coolant Line - Supply

Turbocharger Coolant Line for BMW Applications

The Rein CHT0903 turbocharger coolant line is built for BMW turbocharged cooling circuits that demand stable flow and heat resistance. It uses EPDM and aluminum construction to handle the thermal, oil, and ozone exposure common in modern turbo systems.

Compatible With select BMW 230i, 330i, 430i, 530i, 530e, X3, X4, and 740Le xDrive applications, this Rein turbo hose is a direct-fit service part for the supply side of the coolant circuit. The CHT0903 part number is also referenced for OE-style replacement needs.

Key Features

• EPDM and aluminum construction for turbo coolant service
• Resists heat, oil, and ozone exposure
• OE-quality material selection for BMW turbo systems
• Supply-side turbocharger coolant line application
• Cross-references BMW part numbers 11537643094 and 11538854734

Detailed Description

Rein CHT0903 is a turbocharger coolant line engineered for BMW vehicles equipped with turbocharged powertrains. The EPDM and aluminum material combination is selected to withstand the elevated temperatures and fluid exposure found in turbo cooling circuits, helping maintain consistent coolant routing where rubber hoses can deteriorate over time. This part number, CHT0903, is used across multiple BMW models including the 2017-2021 BMW 230i, 2017-2020 BMW 430i, and 2018-2020 BMW 530e.

This part cross-references BMW OE numbers 11537643094 and 11538854734 for the same application.

What This Part Helps Address

• Coolant seepage at a worn turbo hose connection
• Cracking or hardening from heat cycling
• Oil and ozone-related hose deterioration
• Restricted coolant flow through a damaged line
• Service replacement for aging BMW turbo coolant plumbing

Installation Notes and Tips

• Confirm the vehicle’s year, model, and supply-side routing before ordering.
• Inspect adjoining coolant fittings and seals for wear during replacement.
• Drain and refill coolant according to BMW service procedures after installation.
• Verify hose routing and clearance around turbocharger components before final tightening.

Quality Assurance

Rein manufactures this turbo hose with premium OE-quality materials for BMW turbo system service. The construction is intended to meet the demands of high-heat, high-exposure coolant routing in modern turbocharged engines.

Compatible With BMW Models

• Fits 2017-2021 BMW 230i, Supply
• Fits 2017-2021 BMW 230i xDrive, Supply
• Fits 2017-2020 BMW 430i, Supply
• Fits 2017-2020 BMW 430i Gran Coupe, Supply
• Fits 2017-2020 BMW 430i xDrive, Supply
• Fits 2017-2020 BMW 430i xDrive Gran Coupe, Supply
• Fits 2018-2020 BMW 530e, Supply
• Fits 2018-2020 BMW 530e xDrive, Supply
• Fits 2017-2019 BMW 330i GT xDrive, Supply
• Fits 2017-2019 BMW 330i xDrive, Supply
• Fits 2017-2019 BMW 530i, Supply
• Fits 2017-2019 BMW 530i xDrive, Supply
• Fits 2018-2019 BMW X3, Supply
• Fits 2019 BMW X4, Supply
• Fits 2016-2018 BMW 330e, Supply
• Fits 2017-2018 BMW 330i, Supply
• Fits 2017 BMW 740Le xDrive, Supply