AP Exhaust 6554 Exhaust Muffler - Right

AP Exhaust 6554 Muffler Overview

The AP Exhaust 6554 is a direct-fit exhaust muffler for select Ford, Lincoln, and Mercury full-size rear-wheel-drive applications. It uses an aluminized steel oval body with a baffled internal design and OE-comparable sound level for a factory-style exhaust note.

Built for vehicles such as the Ford LTD Crown Victoria, Mercury Grand Marquis, and Lincoln Town Car, this AP Exhaust muffler is sized for 2-inch inlet and outlet pipe connections and a center-in/center-out layout that matches listed factory applications.

Key Features

• Part number: 6554
• AP Exhaust MSL series muffler
• Oval muffler body with baffled construction
• Aluminized steel body material
• 2-inch inlet and 2-inch outlet pipe connections
• Right-center inlet and left-center outlet locations
• OE-comparable sound level
• Direct-fit application coverage for select Ford, Lincoln, and Mercury models

Detailed Description

AP Exhaust 6554 is an exhaust muffler engineered for factory-style replacement on listed 1979-1989 Ford, Lincoln, and Mercury vehicles. The oval body measures 20 inches long, 10.5 inches wide, and 4.06 inches high, with an overall length of 24.75 inches. Its baffled muffler type is suited to maintaining an OE-like exhaust tone while restoring proper exhaust flow and fitment. This part number 6554 is listed for single-exhaust and dual-exhaust configurations depending on vehicle application, including Ford LTD, Ford LTD Crown Victoria, Mercury Grand Marquis, Mercury Marquis, Lincoln Town Car, Lincoln Mark VI, and Lincoln Continental.

For shoppers searching for a direct-fit muffler for a 1987-1989 Ford LTD Crown Victoria, 1983-1989 Mercury Grand Marquis, or 1981-1987 Lincoln Town Car, AP Exhaust 6554 provides a cataloged replacement option with the correct inlet and outlet orientation for the specified positions.

What This Muffler Helps Address

• Exhaust noise that has become louder than factory levels
• Rust or deterioration in the original muffler body
• Restricted exhaust flow caused by a damaged internal muffler structure
• Fitment issues when replacing a factory-style muffler on listed Ford, Lincoln, or Mercury vehicles
• Restoring an OE-style exhaust tone on classic full-size applications

Installation Notes and Tips

Verify the vehicle’s exhaust layout, position, and pipe diameter before ordering. This muffler is listed with a 2-inch inlet and 2-inch outlet, right-center inlet location, and left-center outlet location, so matching the original routing is important for proper installation. Fitment includes both single-exhaust and dual-exhaust applications depending on the vehicle and position shown in the catalog data.

Fits 1987-1989 Ford LTD Crown Victoria, N/A or right position depending on exhaust configuration; fits 1989 Lincoln Town Car, N/A or right position depending on exhaust configuration; fits 1983-1989 Mercury Grand Marquis, N/A or right position depending on exhaust configuration.

Quality Assurance

AP Exhaust manufactures replacement exhaust components for cataloged direct-fit applications, and the 6554 is built with aluminized steel for standard corrosion resistance in exhaust service. This part cross-references Walker Exhaust (e.g., 21354, 21454) for the same application.