BMW M57 Top Mount Turbo Adapter

BMW M57 Top Mount Turbo Adapter – 3-Bolt to V-Band

The BMW M57 Top Mount Turbo Adapter is designed for custom M57 turbo conversion projects where the factory 3-bolt turbo flange exhaust manifold is converted to accept a V-band turbocharger.

This adapter is intended for builds where moving the turbocharger to the top of the engine makes packaging, clearance and service access easier. It is most commonly used in off-road, overland, racing and custom engine swap projects where the original low turbo position can interfere with the frame, transmission, steering components or engine bay layout.

Key Benefits

• Creates more space around the lower side of the engine
• Reduces the risk of turbocharger or actuator contact with the chassis, frame or transmission
• Moves the turbocharger higher and further away from mud, water and debris
• Improves access for turbocharger inspection, service or replacement
• Useful for field repairs in off-road or expedition conditions
• Provides a clean and aggressive motorsport-style turbo layout

Key Features

• Converts factory 3-bolt turbo flange to V-band connection
• Designed specifically for BMW M57 top mount turbo conversions
• Compatible with BMW M57N D3 V-band turbochargers
• Suitable for custom engine swap and retrofit projects
• Practical solution for demanding off-road and motorsport builds

Required Components

This adapter is intended to be used as part of a complete top mount turbo conversion system.

• BMW M57 D1 or M57N D2 exhaust manifold with factory 3-bolt turbo flange
• BMW M57N D3 V-band turbocharger
• Custom intake and charge pipe routing
• Custom downpipe fabrication

The BMW M57 D1 and M57N D2 exhaust manifolds can be installed on all BMW M57 engine variants (D1–D5), making them a practical base for top mount turbo conversion projects.

Important Installation Notes

• The exhaust manifold must be flipped upwards to create the top mount turbo configuration.
• The BMW M57N D3 turbocharger requires clocking and angle correction modifications to operate correctly in the inverted position.
• Additional fabrication may be required depending on the engine bay layout and vehicle platform.
• Final fitment depends on the selected turbocharger, manifold configuration and conversion project.

Typical Applications

• Off-road BMW M57 engine swap projects
• Nissan Patrol BMW M57 conversions
• Land Rover BMW M57 conversions
• Overland and expedition vehicle builds
• Racing and custom diesel performance projects
• Engine bays where lower turbo clearance is limited
• Custom turbocharger installations where easier service access is required

Compatibility

• BMW M57 D1 engines
• BMW M57N engines
• BMW M57N2 engines
• Compatible with all BMW M57 engine variants when used together with an M57 D1 or M57N D2 exhaust manifold

This adapter is intended for experienced builders performing custom BMW M57 top mount turbo conversions. Professional installation and fabrication experience are recommended.