Dorman 03123 Exhaust Manifold Bolt and Spring - Front

Exhaust Manifold Bolt and Spring Kit

Dorman 03123 is a direct replacement exhaust manifold bolt and spring kit for repairing rusted or damaged exhaust fasteners. It helps restore a secure exhaust connection, reduce exhaust leaks, and maintain the movement needed between the exhaust pipe and muffler on many Toyota, Lexus, Nissan, and Scion applications.

• Direct replacement for worn, corroded, or broken exhaust manifold fasteners
• Helps seal the exhaust connection to reduce leak points
• Spring-style design allows movement between the exhaust pipe and muffler
• Standard replacement grade for routine exhaust service
• Specific fitment for listed vehicle applications

Detailed Product Overview

Built with metal spring material, this Dorman exhaust manifold bolt and spring kit is made for specific-fit applications where the original hardware has deteriorated from heat and corrosion. It is a practical replacement for exhaust service on vehicles such as the Toyota Tacoma, Toyota 4Runner, Toyota Camry, Lexus RX350, and Nissan Sentra, where secure exhaust hardware is critical to keeping the system sealed and properly aligned. Part number 03123 is also cross-referenced to 9008010291 for the same application.

Common Problems This Part Addresses

• Exhaust leaks at the manifold or pipe connection
• Broken, seized, or rusted exhaust bolts
• Loose exhaust joints that create noise or vibration
• Loss of spring tension at the exhaust connection
• Service issues caused by damaged original fasteners

Installation Notes and Fitment

Compatible With many front-position and non-positioned applications across 1994-2021 model years. Body fitment includes Toyota 4Runner, Tacoma, Highlander, Camry, Corolla, Prius, RAV4, Sienna, Tundra, Venza, Yaris, FJ Cruiser, Matrix, Avalon, Land Cruiser, and more, plus Lexus GX460, RX350, ES300h, CT200h, and Nissan Sentra, Versa, Juke, Quest, and NV200. Verify the vehicle year, make, model, and exhaust location before installation. Dorman 03123 is a specific-fit replacement, so matching the original hardware style is important for proper sealing and movement.

Quality Assurance

Dorman designs replacement hardware to match the original service need with standard replacement construction and application-specific fitment. This part number 03123 is intended for direct replacement use on the listed vehicles and exhaust configurations.