FCS Q4011 Air Suspension Spring - Rear

Rear Air Suspension Spring for Toyota and Lexus

FCS Q4011 is a rear air suspension spring for select Toyota and Lexus SUVs. It is built for direct-fit replacement service on vehicles that use rear air spring suspension, including the Toyota 4Runner, Toyota Land Cruiser, and Lexus GX470.

Key Features

• Rear air suspension spring application
• Fits 2003-2009 Lexus GX470, rear
• Fits 2003-2009 Toyota 4Runner, rear
• Fits 2002-2009 Toyota Land Cruiser, rear
• FCS Q4011 part number for application matching

Application Details

Compatible With rear suspension setups on 2003-2009 Lexus GX470, 2003-2009 Toyota 4Runner, and 2002-2009 Toyota Land Cruiser. FCS Q4011 is a fitment-specific air suspension spring for the rear position, making it a direct replacement choice when servicing factory air spring systems on these vehicles. This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

Common Issues It Can Address

• Rear suspension sag
• Uneven ride height at the back of the vehicle
• Air spring leakage or loss of air pressure
• Harsh rear suspension response
• Ride height warning concerns related to worn rear air springs

Installation Notes

Verify rear fitment by year, make, and model before installation. Inspect related air suspension components, lines, and mounting points during service so the replacement spring can be installed on a clean, leak-free system. Use the vehicle’s service information for the correct procedure on Toyota 4Runner, Toyota Land Cruiser, and Lexus GX470 rear air suspension systems.

Quality Assurance

FCS Q4011 is cataloged as a suspension replacement part for the rear air spring position and is listed with direct vehicle fitment data for 2002-2009 Toyota Land Cruiser, 2003-2009 Toyota 4Runner, and 2003-2009 Lexus GX470.