Dorman 03420 Exhaust Bolt

Dorman Exhaust Bolt 03420

Dorman 03420 is a standard replacement exhaust bolt built from steel with a Grade 10.9 rating for dependable fastening performance. It is engineered to match the fit and function of the original hardware on specified vehicles, making it a practical choice for exhaust service and related repairs.

For buyers searching for a Ford E-350 Super Duty exhaust bolt, Ford F-250 Super Duty exhaust bolt, or Ford F-350 Super Duty exhaust hardware, this part number 03420 provides an OE-style replacement option with coarse M8x1.25 threads and a natural finish.

• Steel construction for durable fastening performance
• Grade 10.9 bolt specification
• M8x1.25 coarse thread diameter
• Natural finish with black color
• Standard replacement exhaust hardware from Dorman
• Integral washer outside diameter: 16.5 mm

Fitment and Application Details

Fits 2004-2010 Ford E-350 Super Duty, N/A; fits washer fluid reservoir cap on automatic transmission vehicles. Fits 2003-2007 Ford F-250 Super Duty, N/A; fits washer fluid reservoir cap on automatic transmission vehicles. Fits 2003-2007 Ford F-350 Super Duty, N/A; fits washer fluid reservoir cap on automatic transmission vehicles. Fits 2004-2005 Ford E-350 Club Wagon, N/A; fits washer fluid reservoir cap on automatic transmission vehicles. Fits 2003-2005 Ford Excursion, N/A; fits washer fluid reservoir cap on automatic transmission vehicles.

This part cross-references W300013 for the same application.

What This Part Helps Address

• Broken or corroded exhaust fasteners during repair
• Stripped or worn bolt threads at the exhaust connection
• Loose hardware that prevents a secure exhaust assembly
• Replacement needs after exhaust service or component removal
• Fitment-specific hardware replacement on listed Ford trucks and SUVs

Installation Notes and Tips

Verify thread size, bolt length, and application details before installation. Use the specified M8x1.25 coarse thread hardware on the listed vehicles, and inspect mating surfaces for damage, rust, or thread wear before tightening. Confirm the vehicle configuration noted in the fitment data, especially automatic transmission applications where the listed note applies.

Quality Assurance

Dorman designs this exhaust bolt to match original part fit and function on specified vehicles. It is made from quality materials for reliable performance in standard replacement use.