Bomunik Turbocharger Coolant Return Line for BMW 11537643226 — Single Replacement Hose for 740e xDrive 2017–2019, 330e/530e Fit

This replacement coolant return hose is designed to match the shape, connection ends, and mounting points of the original return line used on specific BMW plug‑in hybrid and turbocharged models. It arrives as a single return-line component intended to integrate into the turbocharger cooling circuit; it does not include the supply hose or a complete turbocharger assembly. Before purchase and installation, confirm fit by checking reference numbers, hose geometry, and vehicle compatibility.

How do I know if this return line fits my BMW?

Compare the part reference numbers 11537643226 and 11538854735 against your existing hose or OEM documentation. Visually inspect your vehicle’s current return line for matching bends, mounting brackets, and connection ends to ensure the new hose will align without modification.

• Confirm listed part numbers match your original part.
• Compare hose shape and bend locations to photos and your component.
• Verify mounting points and connector types match your vehicle.
• Check compatibility with 740e xDrive 2017–2019, and some 330e/530e models.

What does this package include and what is excluded?

The package contains one turbocharger coolant return line hose only. It is meant to replace the return pipe in the turbo cooling system; supply hoses, clamps, or turbocharger units are not part of the kit and must be sourced separately if required.

• Includes: one turbocharger coolant return line hose (reference numbers provided).
• Excludes: coolant supply line, turbocharger assembly, and any fittings or clamps unless shown in package photos.
• Inspect delivered hose before installation to confirm it matches your expectations.

What should I check before installation and during fitment?

Thorough pre-install inspection avoids unnecessary returns and ensures the hose will install correctly. Check the product photos and the actual hose for bracket placement, orientation, and connector diameters, and plan for cooling-system service when removing and replacing the line.

• Compare product photos with your vehicle’s installed hose.
• Verify connector ends, bracket positions, and hose curvature.
• Plan for coolant drain/refill and bleeding procedures during service.
• Consider professional installation if unfamiliar with cooling-system repairs.

Will installation require special tools or professional help?

Replacing a turbo coolant return line involves draining coolant, removing clamps or fasteners, and ensuring leak‑free reconnection; standard hand tools usually suffice, but some models have tight engine-bay access. If you lack experience with cooling-system maintenance or turbo assemblies, a trained technician will ensure correct routing and proper sealing.

• Typical tools: pliers, screwdrivers, socket set, coolant catch pan.
• Expect to perform coolant draining and system bleeding after replacement.
• Professional service recommended for limited workspace access or complex assemblies.

Who is this for: This Bomunik return line is intended for DIY mechanics and professional workshops servicing BMW 740e xDrive (2017–2019) and compatible 330e/530e vehicles that require a direct-fit replacement return hose. It suits buyers who need a single, OEM-referenced return-line replacement and who will verify fitment against reference numbers and hose geometry before fitting. If you need the corresponding supply line or additional cooling components, procure those items separately to complete the repair.