Ensure a reliable and durable exhaust manifold seal on your 2017-2025 Chevy/GMC 6.6L L5P Duramax Diesel with the Gator Fasteners HD220 Heavy Duty Exhaust Manifold Stud Kit (EMBK66L5P).

Crafted from our proprietary HD220 alloy, these studs offer tensile strength exceeding 220,000 PSI, significantly outperforming standard grade 10.9, 12.9, and 8740 chromoly studs commonly used in the industry.

Designed to resist the harsh thermal cycling and corrosive environment of diesel exhaust systems, these black oxide finished studs maintain their integrity over time, preventing common issues like stretched threads, manifold warping, and exhaust leaks.

Precision-machined for a direct fit, this kit ensures easy installation and long-term reliability for your Duramax engine.

• Vehicle Compatibility: Fits 2017-2025 Chevy Silverado and GMC Sierra 2500/3500 HD trucks equipped with the 6.6L L5P Duramax Diesel engine.
• HD220 High-Strength Material - Proprietary alloy with over 220,000 PSI tensile strength, engineered for superior durability
• Exceptional Heat & Fatigue Resistance - Designed to withstand extreme exhaust temperatures and thermal cycling without stretching or failure
• Corrosion Resistant - Black oxide finish protects against rust and harsh diesel exhaust environments
• Precision Fit - Direct replacement for factory exhaust manifold studs on 2017-2025 Chevy/GMC 6.6L L5P Duramax engines
• Long-Lasting Performance - Provides a secure, reliable seal for your exhaust manifold, preventing leaks and failures
• Gator Fasteners Quality - Backed by our commitment to premium quality and reliability - Nothing Bites Like Gator