Description
Overview:
The Cotter, 5.5 is a steel split pin designed to secure components on small Yanmar diesel engines, including the L48N5SJ1 Mixer Spec Engine and 2TNV66-DMC. Used to lock castellated nuts, clevis joints and linkages, it helps prevent fasteners working loose under vibration and load. The 5.5 designation follows the Yanmar specification for correct fit in matching holes, supporting reliable retention where safety and uptime matter. Suitable for a wide range of construction and garden machinery such as mixers, compactors, pumps and generators, it is straightforward to fit: insert through the drilled hole and splay the legs to lock in place. Durable steel construction provides dependable holding power for routine maintenance and repairs. Yanmar part reference: 27310-055001.
Key Features:
- Durable steel split pin for secure retention of nuts, pins and linkages
- Sized to Yanmar specification (5.5) for correct fit and consistent performance
- Helps resist loosening caused by engine vibration and shock loads
- Simple, tool-light installation and removal during regular servicing
- Suitable for harsh site and outdoor conditions common to construction and landscaping use
- Supports reliable operation and reduces unplanned downtime
- Compact, lightweight form factor for easy spares storage in service kits
- Compatible with multiple Yanmar small-engine platforms for fleet standardisation
Typical Applications:
Used to secure castellated nuts on shafts, retain clevis pins on throttle or governor linkages, and lock assemblies on pumps, generators, mixers and compactors powered by Yanmar engines. Ideal for routine maintenance, overhaul work and preventative servicing where components are subject to vibration and frequent start-stop cycles.
Also known as:
Split pin, cotter pin, securing pin, fastening pin, clevis retainer, locking pin for castellated nut.
Fits Models:
2TNV66-DMC, 2TNV66-DMIN, L40AE, L48AE, L48N, L48N-S, L48N5SJ1, L48NS
Alternate Part Numbers:
27310-055001, 27310055001
Product Specifications
| L&S Part No. | 27310 055001 |
|---|---|
| Manufacturer | Yanmar |
| OEM No. | 27310-055001 |
| Unit of Sale | 1 |
| Applications | 2TNV66-DMC, 2TNV66-DMIN, L40AE, L48AE, L48N, L48N-S, L48N5SJ1, L48NS |
| Machine Type | Engines |
| Fits Brands | Yanmar |
| Fits Models | L40AE | L48N-S (Mixer) | L48AE | L48N | 2TNV66-DMC | 2TNV66-DMIN |
