Fel-Pro 26191-PT Engine Cylinder Head Gasket for Chevrolet Silverado 1500

When rebuilding or maintaining a GM V8, the right head gasket sets the stage for better sealing, cooler operation, and longer-lasting performance. The Fel-Pro 26191-PT gasket is designed with application-specific materials to deliver a reliable seal where it matters most. It combines engineered geometry with advanced coatings to help maintain compression and minimize leak paths across a demanding range of driving conditions.

Compatibility and fit

This gasket is designed to fit a broad mix of GM trucks and SUVs from the early 2000s, including models from Isuzu, Buick, Cadillac, and Chevrolet. Specific applications include popular mid-size and full-size platforms, with a focus on the Silverado 1500 family and related trucks built during that era. Before purchasing, please use the Amazon Confirmed Fit bar to verify year, make, model, engine, and trim for your vehicle.

• 2003-2004 Isuzu Ascender
• 2004 Buick Rainier
• 2002-2005 Cadillac Escalade
• 2003-2004 Chevrolet Trailblazer EXT
• 2003-2004 Chevrolet SSR
• 2007 Chevrolet Silverado 1500 Classic
• 2002-2006 Chevrolet Avalanche 1500
• 2003-2008 Chevrolet Trailblazer (where applicable)

Key features and benefits

• Proprietary coating that withstands rough sealing surface finishes up to 80 Ra
• Unique LaserWeld stopper layer to reduce gasket damage from blowout and improve combustion seal
• Multi-layered stainless steel construction maintains sealing stress and accommodates head lift
• Precise embossed sealing beads that help eliminate leak paths at critical areas
• Engineered to resist over-compression of embossments, preserving a superior seal under peak pressures
• Designed for imperfect sealing surfaces, improving reliability in repair work

Why this matters for your engine

The combination of an application-tailored material mix, a tough coating, and a robust structural build means this gasket is built to endure high temperatures, aggressive combustion, and imperfect mating surfaces—without relying on favorable factory finishes. Real-world use cases include head gasket swaps on aging engines, where consistent sealing and durable performance can contribute to smoother starts, steadier idle, and consistent compression across cylinders. Keep in mind that results depend on the overall repair quality and correct vehicle fit.

Before you buy

• Double-check fit using the Amazon Confirmed Fit bar by entering year, make, model, engine, and trim. If there is an "i" in a blue circle, review the notes before purchasing.

For technicians and enthusiasts, the Fel-Pro 26191-PT gasket combines a timeless goal of reliable sealing with modern manufacturing for a practical, real-world repair option. While it cannot guarantee results in every situation, the design intent is to support a strong seal across a range of engines and service conditions.