Apex AMS4403 Exhaust Manifold Gasket Set

Exhaust Manifold Gasket Set for Ford and Mercury

The Apex AMS4403 exhaust manifold gasket set is built for vehicles that need a reliable seal between the exhaust manifold and cylinder head. It supports direct-fit service on a wide range of Ford and Mercury applications, including Ford Focus, Ford Escort, Mercury Tracer, Mercury Lynx, and Mercury LN7.

Use Apex AMS4403 when replacing a leaking manifold gasket on a Ford Focus or Ford Escort, or when servicing older Mercury models that share the same exhaust sealing layout. This part number is listed for 1981-2004 model-year coverage across 45 vehicle applications.

• Exhaust manifold gasket set for manifold-to-head sealing service
• Fits 2000-2004 Ford Focus, N/A
• Fits 1981-2002 Ford Escort, N/A
• Fits 1991-1999 Mercury Tracer, N/A
• Fits 1981-1987 Mercury Lynx, N/A
• Fits 1982-1983 Mercury LN7, N/A
• Apex part number AMS4403 for catalog and service matching

Detailed Application Coverage

Compatible With Ford and Mercury exhaust repair jobs where the manifold gasket must maintain a tight seal under heat and vibration. Apex AMS4403 is a practical choice for long-running service coverage on Ford Escort and Mercury Tracer platforms, as well as later Ford Focus models. The broad year range makes this gasket set relevant for technicians and DIY repairs handling exhaust leaks, manifold removal, or cylinder-head service on these vehicles.

Common Problems This Part Addresses

• Exhaust leaks at the manifold-to-cylinder-head joint
• Ticking or puffing noises from a failed manifold seal
• Loss of sealing after manifold removal during repair
• Visible soot around the exhaust manifold flange
• Replacement needs on Ford Focus, Ford Escort, and Mercury Tracer applications

Installation Notes and Tips

Clean the mating surfaces thoroughly before installation and inspect the manifold and head flange for warpage, cracks, or corrosion. Follow the vehicle service manual for torque sequence and heat-cycle procedures, and verify the correct fitment by year, make, and model before assembly. This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

Quality Assurance

Apex offers this exhaust manifold gasket set as a service replacement part for the listed Ford and Mercury applications. Confirm the vehicle year and model against the fitment data for accurate ordering.