MasterPro A4090 Engine Mount - Front Left

OE Replacement Engine Mount for BMW

MasterPro MRC Mounts A4090 is a hydraulic engine mount built as a standard replacement for select BMW applications. It uses an aluminum mount and bracket with a rubber bushing to help maintain engine support and isolate vibration at the front left or front right mounting location, depending on vehicle application.

The MRC Mounts line focuses on OE-style replacement parts for direct-fit service needs. This MasterPro A4090 engine mount meets or exceeds original equipment manufacturer specifications and is built for BMW 640i, 535i, 740i, 528i, 530i, and related models listed below.

Key Features

• Hydraulic engine mount construction for controlled engine support
• Aluminum mount and aluminum bracket with silver housing
• Rubber bushing with black bushing color
• Standard replacement, OEM replacement mount type
• Mounting bracket included
• Meets or exceeds original equipment manufacturer specifications
• Fits front left and front right applications shown in the fitment list
• Cross-reference: BMW 22116777365; Power Torque B4090

Detailed Description

MasterPro A4090 is an OE-style hydraulic engine mount engineered for BMW vehicles that require a direct replacement at the front left or front right position. The aluminum housing and bracket provide a rigid mounting structure, while the rubber bushing helps manage engine movement and reduce vibration transfer into the chassis. This part number is also referenced as A4090 in service and catalog searches, making it easier to match during repair planning.

Compatible BMW applications include 2019 BMW 640i Gran Coupe, front left; 2012-2018 BMW 640i, front left; 2013-2018 BMW 640i Gran Coupe, front left; 2011-2017 BMW 535i GT, front left; 2014-2016 BMW 520i, front right; 2012-2016 BMW 528i, front right; 2011-2016 BMW 535i, front left; 2010-2016 BMW 740i, front left; 2011-2015 BMW 740Li, front left; 2013-2015 BMW 740Li xDrive, front left; 2012-2013 BMW 530i, front left; and 2011 BMW 528i, front left.

What It Helps Fix

• Excess engine vibration felt through the cabin
• Clunking or shifting during acceleration and deceleration
• Visible wear or collapse in the original engine mount
• Engine movement that affects drivetrain alignment
• Noise caused by a deteriorated hydraulic mount

Installation Notes and Tips

Verify the mounting position before installation, since this part is listed for both front left and front right BMW applications. Confirm the vehicle year, model, and transmission-related fitment notes against the catalog listing before ordering. Mounting hardware is not included, and instructions are not included.

Quality Assurance

MasterPro MRC Mounts A4090 is listed as meeting or exceeding original equipment manufacturer specifications for the applications shown. It is built as a standard replacement engine mount for BMW service work where OE-style fit and function are required.