SS 12pt Exhaust Manifold Bolt Kit

Features:

• High strength 8740 chromoly steel construction
• Fits 2003-2025 Cummins 5.9L and 6.7L
• 12 point head for improved tool engagement
• Provides consistent exhaust manifold clamping force
• Helps prevent exhaust leaks under heat cycles
• Reduces risk of manifold warping    
• Black oxide coating resists corrosion
• Designed for extreme heat conditions
• Maintains proper gasket sealing pressure
• Ideal for performance and heavy duty use
• Not compatible with OEM heat shield

Upgrade Your Exhaust Hardware To Handle Heat Without Backing Down

When you are working on your Cummins, exhaust leaks are one of those problems that always seem to come back if you do not address them properly the first time. This ARP 12 point exhaust manifold bolt kit is built to give you a more permanent solution, especially if your truck sees heavy use or added power. Right away, you are getting stronger hardware that keeps the manifold securely clamped, even as temperatures rise and fall during daily driving. Additionally, the improved clamping force helps maintain a tight seal, which means less chance of leaks and fewer headaches down the road. The 12 point design also makes installation smoother, giving you better tool control when space is tight around the manifold. It is a solid upgrade whether you are fixing an issue or building something more reliable from the start. What’s more, the durability of these bolts means you are not constantly revisiting the same repair. Once installed, it is the kind of upgrade that lets you move on to the next project with confidence.

High Strength Fastener Design Built For Extreme Cummins Exhaust Cycles

The ARP 447-1201 exhaust manifold bolt and stud kit is engineered for 2003-2025 Dodge Ram Cummins 5.9L/6.7L engines, delivering consistent performance in high heat environments. Each fastener is manufactured from premium 8740 chromoly steel, which provides excellent tensile strength and resistance to fatigue under repeated thermal cycling. Furthermore, the 12 point head design allows for improved tool engagement and more uniform torque application during installation. This results in consistent preload across the manifold, which is critical for maintaining gasket sealing and preventing leaks over time. The black oxide finish adds corrosion resistance, helping the hardware hold up against harsh exhaust conditions. Additionally, the kit is designed to reduce the risk of manifold movement and warping, which can occur under extreme heat and load. It is important to note that this setup does not support the use of the OEM heat shield due to its design. Altogether, this kit provides a durable and well engineered solution for maintaining exhaust system integrity in demanding applications.

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/Heat Shield

Notes:

• Fits 2003-2025 Cummins 5.9L and 6.7L engines
• OEM heat shield cannot be reused
• 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 for warping before install
• Not compatible with factory spacers
• Ideal for high heat and performance setups
• Professional installation recommended for best results
• Verify proper tightening sequence during install