Compatible: This Exhaust Manifolds Stud Kit is specifically designed for Cummins turbocharged diesel engines 5.9L and 6.7L 1989-2019, ensuring a secure and accurate installationStainless Steel Construction: Made from stainless steel, these stainless exhaust manifolds stud kit are built to withstand harsh engine conditions, providing long term durability and resistance to rustOptimal Size for Easy Installation: With a size of 1.97inch, these studs are crafted to meet the exact specifications required for seamless integration with your engine componentsReliable Performance Enhance: Upgrade your engine's performance by ensuring tight and connections with this Exhaust Manifolds Stainless Stud Kit, designed to maintain optimal exhaust flow and efficiency in your diesel engineComprehensive Kit: The package includes a complete set of 12 bolts and 12 studs, offering everything you need for a full installation or replacement of your exhaust manifolds hardware Specification: Studs Size: 5cm/1.97inch Package Includes: 1Exhaust Manifolds Stud Kit(Included 12bolts and 12 studs) Note: Please allow slightly errors 1-2cm/0.39-0.79inch differences due to manual measurement.