BMW E60 LCI E81 E87 E90 E91 N47 M57N2 Turbo Turbocharger Return Pipe

The BMW e81 116d e87N e90 oil return pipe is an original lubrication system element in the turbocharger and parts category, designed for selected BMW 1 and 3 Series models. The used OEM part ensures factory fit, proper oil flow and compatibility with the design of the drive unit and turbocharger.

Specifications and technical data

• SKU: 7797406
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7797406
• Substitutable numbers: 11427795976, 7795976, 11427797406, 7797406
• Category: Turbos & Parts

Purpose and function of the oil return line

The BMW e81 116d e87N e90 oil return line is responsible for returning lubricating oil from the turbocharger back to the engine lubrication system. A properly selected line is crucial for:

• stable lubrication of the turbocharger and reduction of the risk of rotor seizure,
• maintaining proper oil pressure in the engine system,
• reduction of leaks and oil seepage in the turbine area,
• maintaining compliance with the factory cable routing geometry in the engine compartment.

The original design of the cable allows for easy installation in place of the factory element, without the need for modifications or fitting universal replacements.

Original BMW brand and replacement numbers

This part comes from the BMW OE line, meaning it was designed according to the vehicle manufacturer's specifications. This ensures:

• factory mounting points and tube shape,
• appropriate inner diameter ensuring proper oil flow,
• compatibility with dedicated seals and fasteners.

The product is assigned an OEM part number and associated interchangeable part numbers, which facilitates precise identification and matching to a specific engine version. If in doubt about compatibility, it's best to use the VIN or compare the markings with the part being removed.

Technical condition and benefits of choosing a used part

The hose is offered in used condition, which means it has been dismantled from a vehicle and has been verified for continued serviceability. This type of component, while maintaining its tightness and mechanical integrity, retains its performance for a long time.

• Economical choice – better price compared to a new part while maintaining the original quality of workmanship.
• Factory fit – no issues with cable geometry, length or diameter typical of some replacements.
• Conscious recycling – using parts from dismantling reduces the amount of waste and is consistent with a sustainable approach to vehicle operation.

How to choose the correct BMW oil return line

To be sure that the cable will fit your specific BMW 1 or 3 Series, it is worth relying on:

• checking the OEM number assigned to the vehicle using the VIN number,
• comparing the shape and mounting points with the currently installed cable,
• verifying that the part comes from the same engine group and model generation.

If you'd like to go through the step-by-step selection process using the VIN and manufacturer's codes, a detailed guide will be helpful: How to Select the Right Car Part by VIN and OEM Number . You'll find practical tips, a list of questions for the seller, and a parameter checklist to help you make a purchasing decision.

Other oil lines for BMW turbochargers

If you're looking for other oil lines for BMW turbochargers —perhaps for a comprehensive replacement of the entire oil supply and return system—check out our dedicated category: Oil Lines for BMW Turbochargers . You'll find a wide selection of disassembled components, tailored to various engine generations and versions, allowing you to build a consistent and leak-free turbine lubrication system.

Summary

The BMW e81 116d e87N e90 oil return pipe is a practical solution for users who want to restore the proper operation of the turbocharger and lubrication system using an original, used part. Its factory fit, compatibility with BMW designs, and the ability to verify it by OEM and VIN make it a sound choice for diesel engine repairs and service in these models.