About this product
---tab Description--- Description Ensure rock-solid cylinder head sealing for your 1989–1998 Dodge 5.9L Diesel 12-Valve with this premium Head Stud Kit. Manufactured from 42CrMo high-strength alloy steel and engineered to withstand extreme heat, pressure, and vibration, these studs provide unmatched durability and reliability. With an impressive tensile strength rating of 220,000 PSI and yield strength of 210,000 PSI, they prevent head lift, gasket failure, and cylinder head distortion—making them the perfect upgrade for daily drivers, towing rigs, and high-performance or turbocharged builds. Note: Installation of this kit requires a rocker pedestal modification to accommodate the shorter rocker pedestal bolts included. Fitment 1989–1998 Dodge Ram 5.9L Diesel 12-Valve Models Key Features Extreme Tensile Strength – 220K PSIWithstands the most demanding loads without stretching or breaking, ideal for turbocharged and high-horsepower Dodge Ram 5.9L Diesel 12-Valve builds. Outstanding Yield Strength – 210K PSIMaintains form and strength under high stress, preventing permanent deformation and ensuring long-term sealing. 42CrMo Alloy Steel ConstructionDelivers superior hardness, toughness, and fatigue resistance in extreme engine environments. Engine Performance & ReliabilityPrevents head lift and gasket failure under boost or high compression, supporting consistent performance. Precision MachiningEnsures perfect alignment, better sealing, and easier installation compared to standard bolts. Built for Demanding ApplicationsIdeal for racing, towing, heavy-duty trucks, or modified Dodge Ram 5.9L Diesel 12-Valve engines running higher-than-stock cylinder pressures. Specifications Material 42CrMo High-Strength Steel Tensile Strength 220,000 PSI Yield Strength 210,000 PSI Net Weight 4 kg What's in the Box 6 × Studs (M8 × 1.25, Length 83 mm) 14 × Studs (M12 × 1.25 / M12 × 1.75, Length 146.3 mm) 6 × Studs (M12 × 1.25 / M12 × 1.75, Length 200 mm) 6 × Studs (M12 × 1.25 / M12 × 1.75, Length 97 mm) 26 × 12-Point Nuts (M12 × 1.25, Height 13 mm) 26 × Washers (Φ22 × 12.2 × 3 mm) 2 × Sockets (10 mm / 14 mm) 1 × Allen Wrench 1 × Assembly Lubricant 1 × Instruction Manual Installation SPELAB Head Stud Installation ---tab FAQ--- FAQs Q: Why upgrade to head studs instead of using factory bolts?A: Head studs offer superior clamping force, better sealing, and reduce the risk of head gasket failure under high boost or heavy load conditions. Q: Will this kit fit all Dodge Ram 5.9L Diesel 12-Valve engines?A: This kit is designed specifically for 1989–1998 12-valve 5.9L Diesel engines. Q: Can these studs handle high horsepower or turbo applications?A: Yes. With a 220K PSI tensile strength, they are ideal for turbocharged, supercharged, or high-performance diesel builds. Q: Do I need to modify my engine to install this kit?A: No machining is required, but proper torque procedure and rocker pedestal modifications may be necessary due to the shorter rocker pedestal bolts included....
