Description
Primary cover bolts are critical fasteners that secure your engine’s primary case—any corrosion, stripping, or failure compromises both seal integrity and engine protection. Drag Specialties Socket Head Primary Cover Bolts deliver OEM-grade quality with the durability to withstand thousands of miles of vibration and thermal cycling. Whether you’re rebuilding after maintenance or replacing seized fasteners, these U.S.-manufactured bolts restore your big twin to factory specifications.
- Fits Harley-Davidson Big Twin
- Model Years ’36–’64
- Socket head design
- Made in the U.S.A.
- OEM-equivalent quality
- Corrosion-resistant finish
- Bolt-on installation
- MPN: DS-190821
