Performance Head Gasket Kit & Seals for Lincoln Navigator (2007-2014) 5.4L

Heavy-Duty Full Engine Overhaul Gasket Set for 2007-2014 Lincoln Navigator (U326)

What it Does: The Performance Head Gasket Kit completely seals the combustion chambers, oil galleries, and coolant passages on the 2007-2014 Lincoln Navigator to prevent compression loss, fluid crossover, and external leaks under heavy operational loads.

The Stock Lincoln Navigator Gasket Failure Points

The 5.4L Triton 3V SOHC engine in the heavy U326 chassis operates under severe thermal expansion cycles, especially during sustained towing or extended idling. The factory multi-layer steel (MLS) head gaskets and elastomer seals frequently degrade over time, leading to combustion ring fatigue, coolant migration into cylinder bores, and external oil seepage. Additionally, stock elastomeric intake and valve cover gaskets become brittle from continuous underhood heat soak, resulting in unmetered air leaks, misfires, and persistent oil pan leaks.

The Engineering Solution

This full overhaul gasket set utilizes high-tensile multi-layer spring steel (MLS) head gaskets with embossed combustion sealing rings engineered to handle elevated cylinder pressures and block-to-head shear movement. All secondary seals and valve stem oil seals are molded from high-grade fluoroelastomer (FKM) to resist oil deterioration and thermal hardening. Precision-cut exhaust manifold gaskets incorporate multi-layer stainless construction to resist high-temperature blowout, maintaining rigid, leak-free sealing across all modular engine mating surfaces.

What's Included

• 1 Valve Oil Seal Set
• 2 Multi-Layer Steel Head Gaskets
• 2 Valve Cover Gaskets
• 2 Intake Manifold Gaskets
• 4 Exhaust Manifold Gaskets
• 1 Oil Pan Gasket
• 1 Crankshaft Rear Oil Seal
• 2 Crankshaft Front Oil Seals
• 1 Oil Filter Gasket
• 2 Water Outlet Gaskets
• Assorted Small O-Rings and Ancillary Seals

Technical Specifications

Compatibility

• 2007 Lincoln Navigator 5.4L V8 Base / L
• 2008 Lincoln Navigator 5.4L V8 Base / L
• 2009 Lincoln Navigator 5.4L V8 Base / L
• 2010 Lincoln Navigator 5.4L V8 Base / L
• 2011 Lincoln Navigator 5.4L V8 Base / L
• 2012 Lincoln Navigator 5.4L V8 Base / L
• 2013 Lincoln Navigator 5.4L V8 Base / L
• 2014 Lincoln Navigator 5.4L V8 Base / L

Frequently Asked Questions & Fitment Warnings

Does this fit the U326 Navigator?

Yes, this is a direct fit for the 2007-2014 Lincoln Navigator equipped with the 5.4L Triton SOHC 24V (3-Valve) engine. Does not fit 3.5L EcoBoost V6 or earlier 5.4L 32V DOHC InTech models.

Are new cylinder head bolts required during installation?

Yes, the 5.4L Modular V8 utilizes torque-to-yield (TTY) cylinder head bolts that permanently stretch upon installation and must be replaced with new hardware to ensure correct clamping load.

The Lincoln Durability Standard

Full-size luxury SUVs require heavy-duty sealing to handle maximum towing ratings, high gross vehicle weights, and severe duty cycles. Rebuilding your 5.4L Triton with multi-layer steel gaskets guarantees proper thermal stability, sustained combustion pressures, and reliable mechanical longevity under load.