Dorman 03091 Exhaust Manifold Bolt and Spring - Front

Dorman 03091 Exhaust Manifold Bolt and Spring Kit

Dorman 03091 is a direct replacement exhaust manifold bolt and spring kit for repairing rusted or damaged exhaust fasteners. It helps restore a secure seal at the exhaust connection while still allowing movement between the exhaust pipe and muffler.

Key Features

• Direct replacement for worn exhaust manifold bolt and spring hardware
• Helps prevent exhaust leaks at the manifold connection
• Allows controlled movement between the exhaust pipe and muffler
• Standard replacement grade for service repairs
• Specific fit for confirmed vehicle applications
• Includes a pilot point fastener for easier alignment during installation

Detailed Description

This exhaust manifold bolt and spring kit is built for service on select Buick, Cadillac, Chevrolet, Oldsmobile, and Pontiac applications from 1986-1991. It is a practical replacement for corroded or damaged exhaust hardware where a secure joint and proper flex are needed. The metal spring construction supports the connection while the stud, conical spring, and lock nut work together to maintain clamping force. This Dorman 03091 part is a direct-fit solution for front-position exhaust service on vehicles such as the 1986-1991 Buick LeSabre, 1986-1991 Cadillac DeVille, and 1986-1991 Pontiac Bonneville.

This part cross-references OE number 10255857 for the same application.

What It Helps Fix

• Exhaust leaks caused by rusted manifold bolts
• Broken or damaged exhaust spring hardware
• Loose exhaust joints at the front exhaust connection
• Noise from a leaking exhaust manifold seal
• Service issues on front exhaust hardware for Buick, Cadillac, Chevrolet, Oldsmobile, and Pontiac models

Installation Notes and Tips

Confirm the vehicle’s front exhaust application before installation. Clean the mating surfaces and inspect the surrounding exhaust components for corrosion, warping, or thread damage. Because this is a specific-fit replacement, verify the application against the vehicle year, make, and model before service. The pilot point fastener is designed to help with alignment during installation.

Quality Assurance

Dorman manufactures replacement hardware for repair applications and this part is built as a standard replacement component for confirmed fitment vehicles.