Monroe 909942 Suspension Coil Spring Seat - Front Upper

Monroe Strut-Mate 909942 Upper Spring Seat

The Monroe Strut-Mate Strut Coil Spring Seat 909942 is an upper spring seat for front upper suspension service. It is built for use with Monroe struts and helps reduce noise and vibration at the strut mount area.

Monroe’s Strut-Mate product line is made for strut and spring replacement jobs where restoring smooth, quiet suspension operation matters. This upper spring seat is a direct service part for front upper applications on select Lexus and Toyota vehicles, including Lexus ES300h, Lexus ES350, RX350, RX450h, RX400h, RX330, RX300, and Toyota Highlander.

Key Features

• Upper spring seat for front upper suspension service
• Designed for use with Monroe struts
• Helps reduce noise and vibration at the strut assembly
• Contents: upper spring seat
• Part number: 909942

Vehicle Fitment

• Fits 2013-2015 Lexus ES300h, front upper.
• Fits 2013-2015 Lexus ES350, front upper.
• Fits 2007-2015 Lexus RX350, front upper; Japan built; without air suspension.
• Fits 2010-2015 Lexus RX450h, front upper; without air suspension.
• Fits 2004-2013 Toyota Highlander, front upper.
• Fits 2006-2008 Lexus RX400h, front upper.
• Fits 2004-2006 Lexus RX330, front upper; without air suspension.
• Fits 2001-2003 Lexus RX300, front upper.

What It Helps Address

• Strut mount noise during suspension operation
• Vibration transfer through the front upper strut area
• Worn upper spring seat surfaces during strut replacement
• Restoration of proper spring seating on select Lexus and Toyota models
• Service needs during conventional strut or spring replacement

Installation Notes

Install during conventional strut or spring replacement on the listed Lexus and Toyota applications. Verify vehicle build details before ordering, especially for RX350, RX450h, and RX330 models that require the correct air suspension and build configuration. Confirm front upper placement and match the part number 909942 to the application before assembly.

Quality Assurance

Monroe Strut-Mate components are engineered to complement Monroe ride control parts and support quieter suspension service. This part cross-references Monroe Shocks & Struts 909942 for the same application.