Monroe 903904 Suspension Strut Mount - Rear

Monroe Strut-Mate Mounting Kit 903904

Monroe Strut-Mate Strut Mounting Kit 903904 is built for rear suspension service on select Toyota and Lexus applications. It is used when replacing conventional struts or springs and is engineered to reduce noise and vibration while supporting Monroe strut ride-control performance.

Key Features

• Rear suspension strut mount kit for select Toyota Camry, Avalon, Solara, Highlander, and Lexus ES300, ES330, RX300 applications
• Helps reduce noise and vibration at the strut tower
• Matches Monroe strut ride-control characteristics
• Includes strut mount, spacer, parts package, and nut
• Part number 903904 for fitment-based lookup and ordering

Product Details

Monroe Strut-Mate Strut Mounting Kit 903904 is a rear suspension strut mount solution for vehicles that use a conventional strut or spring service setup. The kit is intended to restore proper mounting support at the rear suspension while helping isolate road noise and vibration. This makes it a practical choice for Toyota Camry rear strut mount replacement, Toyota Avalon rear suspension service, Toyota Solara rear strut mount replacement, and Lexus ES300, ES330, or RX300 rear applications. This part cross-references KYB SM5175 for the same application.

What It Helps Address

• Clunking or knocking from worn rear strut mounts
• Excess vibration transferred into the cabin
• Noise at the rear suspension during bumps and road transitions
• Reduced mounting support during strut or spring replacement
• Service needs on rear suspension systems for Toyota Camry, Avalon, Solara, Highlander, and Lexus ES300/ES330/RX300

Installation Notes

• Install during rear strut or spring replacement for the listed applications
• Verify vehicle fitment by year, make, model, and rear position before installation
• Confirm whether the vehicle has Adaptive Variable Suspension on Lexus ES300 and ES330 applications, since those listings exclude it
• Check the vehicle build date notes for 2005 Avalon and 2006 Solara before ordering
• Use the included spacer and parts package as specified for the application

Quality Assurance

Monroe Strut-Mate mounting kits are part of Monroe’s suspension service line and are engineered to complement Monroe struts in rear suspension repair. Part number 903904 is listed for multiple Toyota and Lexus rear applications, including 1997-2006 Toyota Camry, 1997-2004 Toyota Avalon, 1999-2005 Toyota Solara, 2001-2003 Toyota Highlander, 1997-2003 Lexus ES300, 2004-2006 Lexus ES330, and 1999-2003 Lexus RX300.