Rein CHE0848 Engine Coolant Hose - Transmission Oil Cooler To Heat Exchanger

OE-Style Coolant Hose for BMW Cooling Service

Rein CHE0848 is an engine coolant hose built as a direct OE-style replacement for the factory hose assembly. It is shaped for the transmission oil cooler to heat exchanger circuit and uses the same general fit and connector layout expected on the original BMW application.

For BMW 230i, 330i, 430i, and 530i models, this hose supports a clean replacement when the original line shows wear, cracking, or leakage. The black hose construction and molded dimensions help maintain proper routing in the cooling system.

Key Features

• Direct replacement coolant hose for the transmission oil cooler to heat exchanger connection
• Rein CHE0848 OE-quality replacement for European vehicle cooling systems
• Black hose finish
• Hose end 1 outside diameter: 39.62 mm
• Hose end 2 outside diameter: 31.29 mm
• Hose end 1 inside diameter: 23.88 mm
• Hose end 2 inside diameter: 16.51 mm
• Built to match OEM size, shape, and branch layout

Detailed Description

Rein Automotive CHE0848 is engineered as an OE-quality coolant hose for BMW cooling system service. The hose is designed around the original routing and connection points used on the transmission oil cooler to heat exchanger line, helping preserve factory-style fitment on BMW 230i, 330i, 430i, and 530i applications. Rein’s OE replacement approach focuses on matching the original hose geometry and connector style rather than adapting a universal design.

This part cross-references BMW 17127640287 for the same application. If you are replacing a leaking or deteriorated hose on a BMW 230i, 330i, 430i, or 530i, CHE0848 provides a direct-fit service part for the cooling circuit connection.

What It Helps Fix

• Coolant seepage at the transmission oil cooler to heat exchanger hose
• Cracking or hardening of the original BMW hose
• Loss of proper hose sealing at the connection points
• Cooling system service needs on high-mileage BMW vehicles
• Fitment issues caused by using an incorrect replacement hose

Installation Notes

Verify the hose end diameters and routing before installation. Inspect mating fittings, clamps, and adjacent cooling components for wear or contamination before transferring the new hose into place. Confirm the hose is routed exactly like the original assembly to avoid kinks, tension, or interference with nearby components.

Compatible With BMW 230i, 2017-2021, transmission oil cooler to heat exchanger; BMW 230i xDrive, 2017-2021, transmission oil cooler to heat exchanger; BMW 330i, 2017-2018, transmission oil cooler to heat exchanger; BMW 330i xDrive, 2017-2019, transmission oil cooler to heat exchanger; BMW 330i GT xDrive, 2017-2019, transmission oil cooler to heat exchanger; BMW 430i, 2017-2020, transmission oil cooler to heat exchanger; BMW 430i xDrive, 2017-2020, transmission oil cooler to heat exchanger; BMW 430i Gran Coupe, 2017-2020, transmission oil cooler to heat exchanger; BMW 430i xDrive Gran Coupe, 2017-2020, transmission oil cooler to heat exchanger; BMW 530i, 2017-2019, transmission oil cooler to heat exchanger; BMW 530i xDrive, 2017-2019, transmission oil cooler to heat exchanger.

Quality Assurance

Rein Automotive focuses on OE-quality replacement parts for European vehicles, with hose assemblies shaped to match original manufacturer specifications for size, form, and connector design.