Monroe Shocks & Struts Suspension Shock Absorber and Coil Spring Assembly P/N:550055

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$119.99
MPN: 550055
Item Package Quantity: 1
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Monroe Shocks & Struts Suspension Shock Absorber and Coil Spring Assembly P/N:550055
Monroe Shocks & Struts Suspension Shock Absorber and Coil Spring Assembly P/N:550055
$119.99

Tackle heavy loads, frequent stops and high miles with the Monroe Magnum Severe Service Rear Suspension Shock Absorber and Coil Spring Assembly 550055 — a gas-charged, heavy-duty rear unit engineered for hardworking emergency, municipal, fleet and jobsite vehicles. It installs as a direct-fit replacement on the 2003-2011 Ford Crown Victoria, 2003-2004 Ford Grand Marquis, 2003-2011 Lincoln Town Car, and 2003-2011 Mercury Grand Marquis; see the Buyer's Guide tab for engine-level detail.

  • 10-stage valving: adjusts to road extremes to help handle frequent stops, heavy loads and high miles.
  • Nitrogen gas charge: helps maintain tire-to-road contact by reducing aeration and shock fade for improved ride and handling.
  • Strong and durable: double welded, including arc welds up to 360 degrees, with a shouldered bushing and bonded bushing (on most applications).
  • Built to last: heavy-duty nitrocarburized rod (on most applications) and sintered iron piston, plus a larger bore, 2-in. reserve tube and 0.05-in. pressure tube that hold more oil.

A PTFE-banded piston helps reduce friction against the pressure tube, while OE all-weather fluid uses special modifiers to handle extreme temperatures and support smooth rod reaction.

Interchange: BW7Z181125A · 69574 · 77955

This part cross-references / interchanges with the following part numbers:

BW7Z181125A, 69574, 77955, 550055

Frequently Asked Questions

What is this part?

It's the Monroe Magnum Severe Service 550055, a gas-charged rear suspension shock absorber and coil spring assembly built for heavy-duty, high-mileage service.

Which vehicles does it fit?

It fits the 2003-2011 Ford Crown Victoria, 2003-2004 Ford Grand Marquis, 2003-2011 Lincoln Town Car, and 2003-2011 Mercury Grand Marquis. See the Buyer's Guide tab for full details.

What does the 10-stage valving do?

The 10-stage valving is designed to adjust to road extremes, helping the shock handle frequent stops, heavy loads and high miles for controlled ride and handling.

Why is it nitrogen gas-charged?

The nitrogen gas charge helps maintain tire-to-road contact by reducing aeration and shock fade, which is intended to improve ride and handling.

What are the signs this assembly may need replacing?

Excessive bouncing, a rougher ride, poor body control over bumps, or leaking fluid can be signs a worn shock and spring assembly should be inspected and possibly replaced.