Description
Proper fastener spec is critical on big twin engines—using undersized or incorrect hardware invites oil leaks, stripped threads, and catastrophic failure. The COLONY Cylinder Base Cap Nut delivers OEM-correct fitment with the durability and finish quality your engine demands. Whether you’re rebuilding a numbers-matching restoration or servicing a high-mileage stroker, this individual cap nut and bolt set ensures a leak-free, professional-grade assembly.
- Fits: ’36–’77 Big Twin
- Application: Cylinder base
- Material: Chrome-plated steel
- Finish: High-polish chrome
- Configuration: Cap nut + bolt
- Specification: OEM-correct
- Origin: Made in U.S.A.
- MPN: 843716
- Installation: Bolt-on
