Fel-Pro Cylinder Head Gasket Set HS 7733 PT-15 — Steel Core, Nonstick Coating for Repair Engines

When rebuilding or repairing an engine, the head gasket set is the critical component that restores combustion, coolant and oil sealing between the block and head. The Fel-Pro HS 7733 PT-15 set uses application-specific materials, a steel core and proprietary coatings designed for repair environments where surfaces aren’t always factory-perfect. This delivers a reliable seal for compatible late‑80s and early‑90s vehicles and commercial chassis applications without the need for retorquing head bolts.

How does this gasket set improve sealing on older or imperfect surfaces?

The HS 7733 PT-15 is built with reinforced facing materials and steel armor to conform to minor surface irregularities commonly found in repaired engines. Its nonstick anti-friction coating helps bridge micro-scratches, while the multi-layer construction maintains compression and resistance under heat.

• Graphite or reinforced fiber facing for surface conformity
• Steel core and armor for structural strength
• Proprietary nonstick coating fills small imperfections
• Designed specifically for repair rather than new-build tolerances

Will this Fel-Pro set fit my vehicle and what models does it cover?

This specific part number fits a defined range of vehicles and commercial chassis from the late 1980s to mid‑1990s; always verify fitment using the vehicle selector before purchasing. Compatibility includes select Excalibur, Isuzu, AM General/Hummer and GM commercial and passenger chassis listed in the product notes.

• Fits select 1987–1988 Excalibur Phaeton applications
• Covers 1993–1995 Isuzu NPR and similar trucks
• Includes certain 1990–1995 GM commercial and passenger chassis variants
• Check the Confirmed Fit tool and qualifier notes for exact fit

What features reduce post-install maintenance and improve durability?

The HS 7733 PT-15’s steel core and engineered sealing materials minimize the need for retorquing head bolts after installation. Combined with Fel‑Pro’s sealing technologies, the design aims to retain clamp load and resist common failure modes encountered in repair scenarios.

• Steel core reduces bolt relaxation and re-torque needs
• Proprietary sealing innovations improve long-term sealing
• Durable facing materials resist blowout and creep
• Nonstick coating reduces friction during installation

How should I confirm I’m ordering the correct gasket set?

Before buying, enter your vehicle’s year, make, model, engine and trim in the fitment checker and review any additional notes indicated by the product listing. If the fitment indicator shows extra information, read the qualifier details to ensure compatibility with your engine and chassis configuration.

• Use the online Confirmed Fit tool with full vehicle details
• Review any blue-circle “i” notes for special fit qualifiers
• Match engine code and trim where possible for exact fit
• Contact seller or Fel‑Pro support if fitment questions remain

Who is this for? The Fel‑Pro HS 7733 PT-15 set is aimed at mechanics, restoration specialists and DIY enthusiasts working on compatible late‑80s to mid‑90s passenger cars, light trucks and commercial chassis. It’s particularly useful when reconditioning engines with imperfect sealing surfaces where OEM materials and robust sealing technology are needed to recreate a dependable, long‑lasting head seal.