Description
Overview:
This Con Rod Big End Bolt is a genuine Villiers fastener for classic JAP stationary engines, used to clamp the big-end cap to the connecting rod for secure, accurate bearing alignment. Built from durable steel for strength under cyclic loads, it is suited to restoration and ongoing maintenance of vintage engines such as the JAP 4 and JAP 5. Supplied as unused old stock, it retains authenticity for period-correct repairs while offering dependable service life. The bolt length is approximately 3 inches (76.2 mm), suitable for original con-rod assemblies where correct fit and clamping force are essential. Ideal for enthusiasts and professionals working on heritage machinery, pumps, and equipment powered by JAP engines requiring OEM-quality hardware.
Key Features:
- Genuine Villiers part for correct fit and shoulder geometry
- OEM Part Number: 18546/1 for easy identification
- Designed for JAP 4/3, 5 series engines for period-correct restoration
- Durable steel construction to withstand vibration and high tensile loads
- Approximate length: 3 inches (76.2 mm) for original-spec assemblies
- Unused old stock (NOS) with possible light tarnish from storage only
- Helps maintain big-end bearing alignment and oil clearances
- Reliable fastening to support smooth running and engine longevity
- Suitable for professional rebuilds and home restorations alike
Typical Applications:
Used during big-end rebuilds, bearing replacement, and con-rod servicing on vintage JAP engines found in stationary plant, workshop equipment, pumps, generators, and classic garden or construction machinery. Ideal when restoring engines to original specification or replacing fatigued bolts as part of preventative maintenance to maintain safe clamp load and dependable operation.
Also known as:
Con-rod cap bolt, big-end cap screw, connecting-rod fastener, big-end fixing bolt, rod journal clamp bolt, crankpin end bolt, conrod retaining bolt.
Fits Models:
JAP 3, JAP 4, JAP 5
Alternate Part Numbers:
185461
