Rein TRP0391 Turbocharger Oil Return Line

Turbo Oil Return Line for BMW Applications

Rein TRP0391 is a standard replacement turbocharger oil return line built for specific BMW applications. It uses premium OE-quality hose material to handle the heat, oil, and ozone exposure common in turbo cooling systems.

Key Features

• Specific-fit turbocharger oil return line for confirmed BMW applications.
• Premium OE-quality hose material for demanding turbo system service.
• Resists heat, oil, and ozone-related deterioration.
• Standard replacement design for restoring proper oil return routing.
• Part number TRP0391 for easy identification.

Detailed Description

Rein TRP0391 is engineered as a direct-fit style turbocharger oil return line for a wide range of BMW turbocharged models, including 340i, 540i, X3, X5, X7, and related 40i and M40i applications. It is built to replace a worn or damaged oil return pipe with a hose material selected for OE-level durability in high-temperature turbo environments. This part cross-references BMW OE numbers 11427643176 and 11428679020 for the same application. If you are servicing a BMW 840i, M240i, or M340i platform, TRP0391 provides a specific-fit solution that matches the intended oil return function.

Common Issues It May Address

• Oil seepage from a deteriorated turbo return line.
• Heat-related cracking or hardening of the hose material.
• Ozone exposure that weakens the line over time.
• Restricted or compromised oil return routing in turbo service.
• Replacement needs after inspection reveals visible wear or damage.

Installation Notes and Tips

Verify the vehicle application against the fitment list before installation. Inspect surrounding turbo oil system components for wear, contamination, or damage before replacing the line. Confirm that the routing matches the original configuration for the specific BMW model and year.

Quality Assurance

Rein manufactures this turbo oil return pipe with OE-quality hose material and standard replacement construction for consistent service in turbo cooling systems.