SS 12pt Exhaust Manifold Bolt Kit

Features:

• High strength 8740 chromoly steel construction
• Fits 2003-2025 Cummins 5.9L and 6.7L
• 12 point nuts for precise torque application
• Provides superior exhaust manifold clamping force
• Helps prevent exhaust leaks under heat cycles
• Reduces risk of manifold warping
• Black oxide finish resists corrosion
• Designed for high heat exhaust environments
• Maintains consistent gasket sealing pressure
• Compatible with OEM heat shield
• Ideal for stock and performance applications

Keep Your Exhaust Sealed Tight Without Giving Up Factory Protection

When you are upgrading your Cummins exhaust hardware, it is nice to know you do not have to sacrifice factory components to get better performance. This ARP exhaust manifold bolt kit gives you the strength you need while still allowing you to reuse the OEM heat shield, which is a big win for both protection and convenience. Right away, you are getting more reliable clamping force that helps keep the manifold seated properly against the head. Additionally, this helps prevent those common exhaust leaks that show up after repeated heat cycles and hard use. The 12 point design also makes installation more controlled, especially when you are working around tight spaces near the manifold. It is the kind of upgrade that works just as well for a daily driven truck as it does for something built for heavier loads or added power. What’s more, you are improving long term reliability without complicating your setup. Once everything is buttoned up, you can count on a cleaner seal and fewer issues down the road.

Engineered Fastener Strength Designed For Cummins Exhaust Durability

The ARP 447-1301 exhaust manifold bolt and stud kit is designed for 2003-2025 Dodge Ram Cummins 5.9L/6.7L engines, offering a durable solution for high heat applications. Each fastener is manufactured from premium 8740 chromoly steel, providing excellent tensile strength and resistance to fatigue under repeated thermal cycling. Furthermore, the 12 point nut design allows for more precise torque application, which helps achieve consistent preload across the manifold. This is critical for maintaining gasket sealing and reducing the chance of leaks over time. The black oxide finish adds corrosion resistance, helping the hardware withstand harsh exhaust conditions. Additionally, this kit is designed to support the reuse of the factory heat shield, which helps maintain proper heat management around the engine bay. The combination of strength and compatibility makes it a practical upgrade for both stock and performance setups. Altogether, this kit delivers a well engineered fastening solution built to handle demanding exhaust environments.

Fitment: 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025 Dodge RAM 2500/3500 5.9/6.7L Cummins No Spacers

Notes:

• Fits 2003-2025 Cummins 5.9L and 6.7L engines
• Allows reuse of OEM heat shield
• Designed for exhaust manifold applications only
• Follow ARP torque specifications during install
• ARP lubricant recommended for accurate torque
• Ensure mating surfaces are clean and flat
• Check manifold condition before installation
• Ideal for stock and performance applications
• Not a direct reuse of factory torque specs
• Professional installation recommended for best results
• Verify proper tightening sequence during install