Description
Your transmission cover bolts are critical fastening points that demand precision engineering and reliable retention—especially in high-vibration big twin applications. A loose or damaged acorn bolt can lead to oil seepage, compromised cover integrity, and potential drivetrain issues. COLONY’s OEM-quality acorn bolt and nut sets ensure a secure fit and professional appearance on your classic or custom big twin.
Engineered specifically for ’36-’86 Big Twin transmissions, these fasteners deliver the durability and precision fit you need for trouble-free ownership.
- Fitment: Big Twin ’36-’86
- Material: Stainless steel construction
- Finish: Polished chrome acorn cap
- Includes: Complete bolt, nut set
- Installation: Bolt-on, no fabrication
- Origin: Made in the U.S.A.
- MPN: 8751-19
- Application: Transmission side cover









