1997–2002 Navigator and Expedition Air Suspension Conversion
An air-to-coil conversion replaces the factory air-suspension support arrangement with conventional springs. For a 2000 Lincoln Navigator 4WD with four-corner self-leveling, this is a system-level decision, not simply a less complicated way to replace four worn shocks.
Decide whether to retain self-leveling
Factory air suspension adjusts support as vehicle loading changes. A conventional coil conversion removes that automatic leveling capability. Consider how the SUV is used, including passengers, luggage, and trailer tongue weight. A coil-equipped vehicle must still remain within its original load ratings and may sit differently as weight is added.
Identify the complete vehicle configuration
The broad 1997–2002 Navigator and Expedition model range does not make every kit suitable for every vehicle. Confirm model, year, drivetrain, and whether the original system acts at all four corners. Use the conversion manufacturer’s application instructions rather than assuming an Expedition listing and a Navigator listing are interchangeable.
Understand the two-box Monroe arrangement
The identified Monroe conversion is divided into 90006C1 and 90006C2. These are complementary boxes, not alternative selections for the same complete job. When that kit is the correct application, both boxes are required. Verify the contents and installation requirements together so that springs, damping components, and associated hardware form the intended package.
Plan air-system shutdown and final checks
Follow the kit procedure for safely disabling the original air system and addressing its electrical controls. Do not improvise by disconnecting components at random. Inspect mounting points and nearby suspension parts during installation, then check alignment where required, ride height, clearances, and behavior with normal loading before returning the SUV to regular service.
Applications and parts
Related reading
Frequently asked questions
Is 90006C1 a complete conversion by itself?
No. The Monroe arrangement requires both 90006C1 and 90006C2 when applicable.
Will the SUV still level itself after conversion?
Not with a conventional coil-spring conversion; the factory automatic leveling function is removed.
