Mahle F31903 Exhaust Manifold To Up-Pipe Gasket | 2001-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

Features:

• Fits 2001–2016 GM 6.6L Duramax engines
• Compatible with Silverado and Sierra 2500HD/3500HD
• Replaces exhaust manifold to up-pipe gasket
• Tolerates temperatures up to 1400 degrees
• Maintains a tight and reliable seal
• Manufactured to precise factory specifications
• Restores OE-level fit and function
• Ideal for gasket replacement or turbo upgrades
• Durable design for long-lasting performance
• Resists blowouts and exhaust leaks under pressure
• Trusted Mahle quality and engineering
• Direct-fit replacement for easy installation

Seal In Performance And Keep The Heat Where It Belongs

When you’re chasing reliability and power from your 2001–2016 Duramax, a weak exhaust seal is the last thing you want standing in your way. The Mahle F31903 Exhaust Manifold To Up-Pipe Gasket is built to take the heat, literally, with a rating up to 1400 degrees, giving you the confidence to push your truck without worrying about leaks or blown gaskets. Whether you’re replacing old, worn parts or upgrading for better performance, this gasket delivers factory-fit precision and long-lasting durability. It’s a direct-fit replacement designed to keep everything sealed tight between your manifold and up-pipe, so you get smooth turbo spool and consistent exhaust flow. No whistling, no soot trails, just a solid seal every time. Backed by Mahle’s reputation for OE-level quality, it’s the kind of part you can install once and count on for the long haul. If you're already under the hood, this is one of those smart upgrades that pays off in both power and peace of mind.

Built To Handle High Temperatures And Hold The Line

The Mahle F31903 Exhaust Manifold To Up-Pipe Gasket is precision-engineered for 2001–2016 GM 6.6L Duramax engines and provides a critical seal between the exhaust manifold and up-pipe junction. Designed to meet and exceed OE specifications, it ensures consistent sealing performance under extreme thermal and pressure cycles common in high-output diesel engines. Rated to withstand temperatures up to 1400 degrees Fahrenheit, this gasket is built to endure the harsh conditions of turbocharged exhaust flow without cracking or breaking down. Its durable construction resists blowouts and exhaust leaks, helping to maintain proper backpressure and turbo efficiency. The gasket installs easily with a precise fit that matches factory geometry, making it an ideal replacement for routine maintenance or during turbo and exhaust upgrades. Whether you're chasing efficiency, maintaining factory performance, or supporting a modified build, this gasket plays a crucial role in protecting your turbo system and maintaining consistent performance. It’s a small component with a big impact on your engine’s reliability.

Fits: 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

Notes:

• Designed for 2001–2016 GM 6.6L Duramax engines
• Maintains a tight seal between exhaust manifold and up-pipe
• Withstands exhaust temperatures up to 1400 degrees Fahrenheit
• Manufactured to meet or exceed OE specifications
• Ideal for direct replacement during maintenance or upgrades
• Helps prevent exhaust leaks and loss of performance
• Critical for maintaining turbo spool and efficiency
• Durable material construction resists blowouts and cracking
• Engineered for a precise factory-style fit
• Recommended during any turbo or exhaust system service