Dorman 03309HP Exhaust Manifold Hardware Kit - Left or Right

Durable Exhaust Manifold Hardware Kit for Chrysler, Dodge, Jeep, and Ram

The Dorman 03309HP Exhaust Manifold Hardware Kit is engineered to provide reliable fastening solutions for exhaust manifolds on select Chrysler, Dodge, Jeep, and Ram vehicles. Designed with stainless steel studs and nuts, this kit offers corrosion resistance and strength for long-lasting performance.

• Includes stainless steel studs and nuts with clear finish for corrosion resistance
• Stud length of 72 mm with dual-thread design: medium thread on one end (27.7 mm) and coarse thread on the other (12.6 mm)
• Stud and bolt grade 8.8 for enhanced durability under high-temperature conditions
• Compatible with multiple models including Chrysler 300, Dodge Challenger, Jeep Grand Cherokee, and Ram 1500 series
• Package contains 5 studs and 4 nuts with locking features for secure installation

Technical Details and Material Specifications

This exhaust manifold hardware kit features studs made from stainless steel, providing resistance to rust and heat commonly encountered in exhaust systems. The studs measure 72 mm in length, with a 7.9 mm thread diameter on one end. The dual-thread design includes a medium thread length of 27.7 mm on one end and a coarse thread length of 12.6 mm on the other, allowing for precise and secure fastening. Nuts included are also stainless steel with a clear finish, designed to maintain integrity under thermal cycling. Both studs and bolts meet grade 8.8 standards, ensuring strength and reliability in demanding automotive environments.

Compatible Vehicles and Applications

• Chrysler 300 and Aspen models
• Dodge Challenger, Charger, Durango
• Jeep Commander, Grand Cherokee
• Ram 1500, 1500 Classic, 2500, and 3500 series trucks

This kit is intended for use in exhaust manifold repairs or replacements where original hardware is worn, damaged, or corroded. It is suitable for professional mechanics and experienced DIYers working on exhaust systems of the listed vehicles.

Common Issues Addressed by This Hardware Kit

• Loose or damaged exhaust manifold studs causing exhaust leaks
• Corroded or rusted nuts and studs reducing fastening strength
• Broken or stripped threads on existing manifold hardware
• Vibration-related loosening of exhaust manifold connections
• Replacement of missing or worn fasteners during manifold service

Installation Notes and Tips

Ensure the exhaust manifold and cylinder head surfaces are clean and free of debris before installation. Use appropriate torque specifications for grade 8.8 hardware to avoid over-tightening or thread damage. The dual-thread stud design requires correct orientation: medium thread end engages the cylinder head, and coarse thread end secures the manifold. Verify compatibility with your specific vehicle model and year before installation.

Quality Assurance and Warranty

Dorman exhaust manifold hardware kits are manufactured to meet industry standards for strength and corrosion resistance. The stainless steel construction supports durability in high-temperature exhaust environments. While specific warranty details are not provided, Dorman products typically come with limited warranties covering defects in material and workmanship. Consult product documentation or manufacturer resources for exact warranty terms.