HomeExhaust > Hardware, Fasteners and FittingsDorman 680-104CD Exhaust Manifold Nut
Part #: 680-104CD

Dorman 680-104CD Exhaust Manifold Nut

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30 vehicles fit this part
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OE Direct Replacement — Bolt-on fit, no modifications needed
Fitment: Chevrolet, Corvette
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Durable Brass Exhaust Manifold Nuts for Chevrolet Corvette

The Dorman 680-104CD exhaust manifold nuts are designed specifically for Chevrolet Corvette models, providing reliable fastening for your vehicle's exhaust manifold. Crafted from brass, these hex nuts offer corrosion resistance and a precise fit to maintain exhaust system integrity.

  • Material: Brass for corrosion resistance and durability
  • Thread Direction: Clockwise for standard installation
  • Hex Size: 9/16 inch for compatibility with common tools
  • Thread Type: Coarse SAE threads for secure fastening
  • Inside Diameter: 0.31 inches ensuring proper fit
  • Height and Depth: 0.628 inches for consistent engagement
  • Seat Type: Ball seat for optimal sealing on exhaust manifold studs
  • Package Contents: Set of 6 hex nuts

Product Details and Specifications

The Dorman 680-104CD exhaust manifold nuts are manufactured from brass, providing a natural corrosion-resistant finish that withstands the high-temperature environment of the exhaust system. These nuts feature a standard grade with coarse SAE threads and a ball seat type, which helps ensure a tight seal on the exhaust manifold studs. The hex design with a 9/16 inch size allows for easy installation and removal using standard hand tools. With a height and depth of 0.628 inches, these nuts provide consistent thread engagement without the need for washers or locking features.

Compatible Vehicles and Applications

These exhaust manifold nuts are compatible with Chevrolet Corvette models, making them a suitable replacement part for maintaining or repairing the exhaust system. The Dorman 680-104CD part number corresponds directly to the hardware specifications required for proper fitment on Corvette exhaust manifolds, ensuring secure fastening and reliable performance.

  • Replacement for worn or damaged exhaust manifold nuts
  • Prevents exhaust leaks caused by loose or stripped nuts
  • Restores proper exhaust manifold sealing and alignment
  • Helps maintain exhaust system integrity and performance
  • Ideal for routine maintenance or exhaust system repairs

Installation Notes and Tips

When installing the Dorman 680-104CD exhaust manifold nuts, ensure the exhaust manifold studs are clean and free of debris to promote proper thread engagement. Use a 9/16 inch wrench or socket to tighten the nuts clockwise to the manufacturer’s specified torque settings. Since these nuts do not include washers or locking features, verify that the threads are in good condition to prevent loosening during operation. Avoid over-tightening to prevent damage to the studs or nuts.

Quality Assurance and Warranty

Dorman exhaust manifold nuts are manufactured to meet industry standards for fit and function. While these nuts are not heat hardened or ACQ rated, their brass construction offers natural resistance to corrosion in exhaust environments. The Dorman 680-104CD part is backed by Dorman’s quality control processes to ensure consistent performance. Please refer to Dorman’s warranty policy for specific coverage details.

BrandDorman
Part Number680-104CD
ACQ RatedNo
ColorBrass
Depth0.628
FQA Compliant FastenerNo
Friction Material ThicknessBrass
Heat HardenedNo
Height0.628
Hex Size9/16
Inside Diameter0.31
LockingNo
MaterialBrass
Metric Or SAESAE
Nut GradeStandard
Package Contents6 Hex Nuts
Seat TypeBall
Shouldered EndNo
Thread DirectionClockwise
Thread LocationInside
Thread TypeCoarse
TypeHex
Washer AttachedNo

This part fits 30 vehicles. Search below:

YearMakeModelPositionNotes
1982ChevroletCorvetteN/ANut Only; Exhaust Pipe
1981ChevroletCorvetteN/ANut Only; Exhaust Pipe
1980ChevroletCorvetteN/ANut Only; Exhaust Pipe
1979ChevroletCorvetteN/ANut Only; Exhaust Pipe
1978ChevroletCorvetteN/ANut Only; Exhaust Pipe
1977ChevroletCorvetteN/ANut Only; Exhaust Pipe
1976ChevroletCorvetteN/ANut Only; Exhaust Pipe
1975ChevroletCorvetteN/ANut Only; Exhaust Pipe
1974ChevroletCorvetteN/ANut Only; Exhaust Pipe
1973ChevroletCorvetteN/ANut Only; Exhaust Pipe
1972ChevroletCorvetteN/ANut Only; Exhaust Pipe
1971ChevroletCorvetteN/ANut Only; Exhaust Pipe
1970ChevroletCorvetteN/ANut Only; Exhaust Pipe
1969ChevroletCorvetteN/ANut Only; Exhaust Pipe
1968ChevroletCorvetteN/ANut Only; Exhaust Pipe
1967ChevroletCorvetteN/ANut Only; Exhaust Pipe
1966ChevroletCorvetteN/ANut Only; Exhaust Pipe
1965ChevroletCorvetteN/ANut Only; Exhaust Pipe
1964ChevroletCorvetteN/ANut Only; Exhaust Pipe
1963ChevroletCorvetteN/ANut Only; Exhaust Pipe
1962ChevroletCorvetteN/ANut Only; Exhaust Pipe
1961ChevroletCorvetteN/ANut Only; Exhaust Pipe
1960ChevroletCorvetteN/ANut Only; Exhaust Pipe
1959ChevroletCorvetteN/ANut Only; Exhaust Pipe
1958ChevroletCorvetteN/ANut Only; Exhaust Pipe
1957ChevroletCorvetteN/ANut Only; Exhaust Pipe
1956ChevroletCorvetteN/ANut Only; Exhaust Pipe
1955ChevroletCorvetteN/ANut Only; Exhaust Pipe
1954ChevroletCorvetteN/ANut Only; Exhaust Pipe
1953ChevroletCorvetteN/ANut Only; Exhaust Pipe

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

This part directly replaces or is cross-referenced with the following part numbers:

838780

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.