MasterPro A5939 Engine Mount - Front Left

MasterPro MRC Mounts A5939 Front Left Engine Mount

MasterPro MRC Mounts A5939 is a hydraulic engine mount for the front left position, built as an OEM replacement for select Cadillac applications. It uses a steel mount with a black bushing and black bracket, and includes a heat shield and mounting bracket for a direct replacement setup.

Key Features

• Hydraulic engine mount construction
• Front left mounting position
• Steel mount with black bushing and black bracket
• Heat shield included
• Mounting bracket included
• OEM replacement / standard replacement grade
• Meets or exceeds original equipment manufacturer specifications
• Per vehicle quantity: 1

Product Details

The MasterPro MRC Mounts line focuses on replacement mounts for vehicles that use original-equipment-style mounting geometry and hydraulic isolation. Part number A5939 is built for the front left side and is listed for 2005-2010 Cadillac STS and 2004-2006 Cadillac SRX. This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application. If you are replacing a worn Cadillac STS front left engine mount or a Cadillac SRX front left engine mount, A5939 provides a direct-fit replacement option.

Common Issues This Part Can Address

• Excessive engine movement under load
• Vibration felt through the cabin at idle or acceleration
• Clunking or knocking from a deteriorated mount
• Cracked, collapsed, or leaking hydraulic mount housing
• Misalignment caused by a failed front left engine mount

Installation Notes

Verify the front left position before ordering and compare the original mount to the new unit for bracket shape, stud count, and heat shield layout. Mounting hardware is not included. Because this is an OEM replacement engine mount, proper support of the engine during removal and installation is important to maintain alignment and reduce stress on adjacent components.

Quality Assurance

MasterPro MRC Mounts A5939 is listed as meeting or exceeding original equipment manufacturer specifications and is built as a standard replacement for the specified Cadillac STS and SRX applications. The MRC Mounts product line is positioned for OE-style replacement fitment and construction consistency.